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| Assessment of the effects of genotype, location, and planting season on the nutritional composition and the metabolizable energy of advanced twenty-five maize hybrids, Alamu, E. O., Menkir, A., Adesokan, M., Fawole, S. and Maziya-Dixon, B., in: International Journal of Plant Biology, volume 13, number 3, pages 343-351, ISSN 2037-0164, 2022. [DOI] |
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| Bactrocera dorsalis (Diptera: Tephritidae): dynamique des populations, parasitisme par Fopius arisanus (Hymenoptera : Braconidae) et distribution predictive du parasitoide en Afrique, Nanga, N. S.*, University of Yaounde I, 2020. |
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| Baseline characterization of production and markets, technologies and preferences, and livelihoods of smallholder farmers and communities affected by HIV/AIDS in Mozambique, Alene, A., Khonje, M., Mwalughali, J., Chafuwa, C., Longwe, A., Khataza, R., Kapalasa, E., Madzorera, I., Gondwe, T., Mussagy, M., Ntawuruhunga, P., Boahen, S., Maziya-Dixon, B. and Chikoye, D., International Institute of Tropical Agriculture, ISBN 978-978-8444-29-9, 2013. |
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| Caracterisation du systeme sectoriel d'innovation du cacao au Cameroun: Characterization of the sectoral innovation system for cocoa in Cameroon, Mathe, S., Nzossie, E. J. F.* and Temple, L., in: Science, Technology, Development, volume 21, number 1, pages 1-14, ISSN 0254-6418, 2021. [DOI] |
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| Caracteristiques saisonnieres de l'alimentation d'Oecophylla longinoda (Hymenoptera: Formicidae) dans un grand verger de manguiers du Benin, Vayssieres, J., Ouagoussounon, I.*, Adandonon, A.*, Sinzogan, A.*, Korie, S., Todjihounde, R.*, Alassane, S.*, Wargui, R. B.*, Anato, F.*, Neuenschwander, P., Tamo, M. and Goergen, G ., Abstract, ST2.10: p. 64 in the book of abstracts of the 21st Conference of the African Association of Insect Scientists (AAIS-2015), Cotonou, Benin, October 19-23, 2015. |
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| Carbon usage in yellow-fleshed Manihot esculenta storage roots shifts from starch biosynthesis to cell wall and raffinose biosynthesis via the myo-inositol pathway, Gutschker, S., Ruescher, D., Rabbi, I. Y., Rosado-Souza, L., Pommerrenig, B., Pauly, M., Robertz, S., van Doorn, A. M., Schlereth, A., Neuhaus, H. E., Fernie, A. R., Reinert, S., Sonnewald, U. and Zierer, W., in: Plant Journal, volume 119, pages 2045-2062, ISSN 0960-7412, 2024. |
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| Carotenoid and molecular marker-based diversity assessment in tropical yellow endosperm maize inbred lines, Adeyemo, O.*, Menkir, A., Gedil, M. and Omidiji, O.*, in: Journal of Food, Agriculture and Environment, volume 9, number 3 and 4, pages 383-392, ISSN 1459-0255, 2011. |
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| Carotenoid profile and functional properties of flour blends from biofortified maize and improved soybean varieties for product developments, Alamu, E. O., Olatunde, G. O.*, Adegunwa, M.*, Adebanjo, L. A.*, Awoyinfa, O. C.* and Soyoye, J. B.*, in: Cogent Food & Agriculture, volume 7, number 1, pages 1-16, ISSN 2331-1932, 2021. [DOI] |
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| Carotenoid profiling of yams: Clarity, comparisons and diversity, Price, E. J., Bhattacharjee, R., Lopez-Montes, A. and Fraser, P. D., in: Food Chemistry, volume 259, pages 130-138, ISSN 0308-8146, 2018. [DOI] |
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| Carotenoids content of yellow-fleshed cassava genotypes grown in four agroecological zones in Nigeria and their Retinol Activity Equivalents (RAE), Maziya-Dixon, B. and Dixon, A., in: Journal of Food, Agriculture & Environment, volume 13, number 2, pages 63-69, ISSN 1459-0255, 2015. |
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| Cassava Brown Streak Disease response and association with agronomic traits in elite Nigerian cassava cultivars, Ano, C. U.*, Ochwo-Ssemakula, M.*, Ibanda, A.*, Ozimati, A.*, Gibson, P.*, Onyeka, J.*, Njoku, D.*, Egesi, C. and Kawuki, R. S.*, in: Frontiers in Plant Science, volume 12, number -: 720532, pages 1-15, ISSN 1664-462X, 2021. [DOI] |
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| Cassava brown streak disease: another threat to cassava production in the lake zone of Tanzania, Ndyetabula, I.*, Jeremiah, S.*, Mkamilo, G.*, Merumba, S.*, Chuwa, C.*, Kasele, I., Legg, J. and Bouwmeester, H., Abstract presented at the International Cassava Brown Streak Disease Workshop. Entebbe, Uganda, 5-7 May, 2010. |
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| Cassava Matters: Issue No. 001, IITA, , Atser, G., Jalloh, A. and Osunde, T., This newsletter is produced by the Cassava Weed Management Project: Issue No. 001, 2016. |
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| Cassava Matters: Issue No. 003, IITA, , Atser, G., Jalloh, A. and Osunde, T., This newsletter is produced by the Cassava Weed Management Project: Issue No. 003, 2016. |
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| Cassava Matters: Issue No. 004, IITA, , Atser, G., Jalloh, A. and Osunde, T., This newsletter is produced by the Cassava Weed Management Project: Issue No. 004, 2016. |
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| Cassava Matters: Issue No. 005, IITA, , Atser, G., Jalloh, A. and Osunde, T., This newsletter is produced by the Cassava Weed Management Project. Issue No. 005, 2017. |
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| Cassava Matters: Issue No. 006, IITA, , Atser, G., Jalloh, A. and Osunde, T., This newsletter is produced by the Cassava Weed Management Project: Issue No. 006, 2017. |
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| Cassava Matters: Issue No. 007, IITA, , This newsletter is produced by the Cassava Weed Management Project: Issue No. 007, 2017. |
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| Cassava Matters: Issue No. 008, IITA, , This newsletter is produced by the Cassava Weed Management Project: Issue No. 008, 2017. |
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| Cassava Matters: Issue No. 009, IITA, , This newsletter is produced by the Cassava Weed Management Project: Issue No. 009, 2017. |
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| Cassava Matters: Issue No. 010, IITA, , This newsletter is produced by the Cassava Weed Management Project: Issue No. 010, 2017. |
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| Cassava Matters: Issue No. 011, IITA, , This newsletter is produced by the Cassava Weed Management Project: Issue No. 011, 2018. |
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| Cassava Matters: Issue No. 012, IITA, , This newsletter is produced by the Cassava Weed Management Project: Issue No. 012, 2018. |
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| Cassava Matters: Issue No. 013, IITA, , This newsletter is produced by the Cassava Weed Management Project: Issue No. 013, 2018. |
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| Cassava Matters: Issue No. 014, IITA, , This newsletter is produced by the Cassava Weed Management Project: Issue No. 014, 2018. |
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| Cassava Matters: Issue No. 015, IITA, , This newsletter is produced by the Cassava Weed Management Project: Issue No. 015, 2018. |
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| Cassava Matters: Issue No. 016, IITA, , This newsletter is produced by the Cassava Weed Management Project: Issue No. 016, 2019. |
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| Cassava Matters: Issue No. 017, IITA, , This newsletter is produced by the Cassava Weed Management Project: Issue No. 017, 2019. |
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| Cassava mealybug (Phenacoccus manihoti) and green spider mites (Mononychellus spp.) biological control: an example of classical biological control for Africa, Herren, H. R., Neuenschwander, P., Hammond, W., Yaninek, J., Gutierrez, A. P., Haug, T., Schulthess, F., Lohr, B., Varela, A. M. and Hennessey, R. D., Institut national de la recherche agronomique (INRA), 1988. |
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| Cassava molecular genetics and genomics for enhanced resistance to diseases and pests, Ntui, V. O., Tripathi, J., Kariuki, S. M.* and Tripathi, L., in: Molecular Plant Pathology, volume 25, number 1: e13402, pages 1-14, ISSN 1464-6722, 2024. [DOI] |
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| Cassava production and processing in the Democratic Republic of Congo: COSCA working paper, No 22, Nweke, F., Lutete, D., Dixon, A., Ugwu, B., Ajobo, O., Kalombo, N. and Bukaka, B., COSCA working paper, International Institute of Tropical Agriculture (IITA), ISBN 978-131-161-4, 2000. |
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| Cassava production in Ghana; a function of market demand and farmer access to improved production and processing technologies: COSCA working paper, No. 21, Nweke, F., Haleegoah, J., Dixon, A., Ajobo, O., Ugwu, B. and Al-Hassan, R., COSCA working paper, International Institute of Tropical Agriculture (IITA), ISBN 978-131-160-6, 1999. |
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| Cassava production in Nigeria; a function of farmer access to markets and to improved production and processing technologies: COSCA working paper, No. 20, Nweke, F., Ugwu, B., Dixon, A., Asadu, C.* and Ajobo, O., COSCA working paper, International Institute of Tropical Agriculture (IITA), ISBN 978-131-159-2, 1999. |
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| Cassava the crop of the future, to feed the world: value chain assessment of major food crops in South Kivu and North Katanga, DR Congo, Dontsop-Nguezet, P., Njukwe, E., Amato-Masirika, S., Nyakuni, A.*, Zozo, R., Okafor, C. and Akem, C., Abstract (Oral) in World Congress on Root & Tuber Crops (WCRTC), Nanning, Guangxi, China, January 18-22, 2016. |
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| Cassava varietal needs of farmers and the potential for production growth in Africa: COSCA working paper, No. 10, Nweke, F., Dixon, A., Asiedu, R. and Folayan, S. A., COSCA working paper, International Institute of Tropical Agriculture (IITA), 1994. |
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| Cassava virus disease surveillance in sub-Saharan Africa: proceedings (Poster), FAO CaCESCA project meeting, 30 November to 3 December, 2009, Dar es Salaam, Tanzania, Legg, J., Kim, D., Maruthi, M. N., Bouwmeester, H., Okao-Okuja, G., Obonyo, R., Boniface, S., Jeremiah, S.*, Busungu, C., Ndyetabula, I.*, Legg, C. and Kumar, P. L., 2009. |
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| Cassava yield was not just a matter of total nutrient inputs: insights from the Democratic Republic of the Congo and Burundi, Kintche, K., Hauser, S., Cirhuza, J. M., Nzohabonayo, Z., Silva, J. V., Munyahali, W ., Wendt, J. and Vanlauwe, B., in: Field Crops Research, volume 323, number -: 109766, pages 1-16, ISSN 0378-4290, 2025. [DOI] |
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| Cassavabase (cassavabase.org): an integrated field breeding and genomics database enables accelerated genetic gain in cassava, Agbona, A ., Rabbi, I. Y., Mueller, L. and Kulakow, P., Abstract, P. 311 in the book of abstracts and programme of the 12th Triennial Symposium of International Society for Tropical Root Crops-Africa Branch (ISTRC-AB), 30 - 5, October, Alisa Hotel, Accra, Ghana, 2013. |
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| Cassavabase (cassavabase.org): an integrated field breeding and genomics database enables accelerated genetic gain in cassava: proceeding (poster), Agbona, A ., Kulakow, P., Rabbi, I. Y., Prasad, P., Arnaud, E., Valette, L., Angelique, M., Mueller, L. and Menda, N., World Congress on Root and Tuber Crops (WCRTC), 2016. |
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| Cassava-based farming systems in the semiarid zone: need for a change in agronomic practices, Ekanayake, I. J. and Okarter, U., pages 241-245, Government of Benin, 2001. |
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| cDNA cloning of a class III acid chitinase from the African yam bean (Sphenostylis stenocarpa) (Accession no. AF137070), Colucci, G., Machuka, J. and Chrispeels, M., in: Plant Physiology, volume 120, pages 633, 1999. |
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| Centennial of research on groundnut rosett disease:what is known and what still needs to be known to achieve effective control of this menace in Sub-Saharan Africa, Waliyar, F., Kumar, P. L., Osiru, M., Monyo, E., Ntare, B. R. and Nigam, S., pages 61, 2007. |
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| Cereal-legume rotation to control Striga and improve on-farm yield of maize in northern Guinea savanna: effects of one-year rotation, Kamara, A., Chikoye, D., Menkir, A., Kureh, I.*, Franke, L. and Ibikunle, O., in: Book of Abstracts of the 4th International Weed Science Congress, 20-25 June 2004, Durban, South Africa, 2004. |
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| CERES-maize model for determining the optimum planting dates of early maturing maize varieties in northern Nigeria, Adnan, A. A.*, Jibrin, J. M.*, Kamara, A., Abdulrahman, B. L.*, Shaibu, A. S.* and Garba, I. I.*, in: Frontiers in Plant Science, volume 8, number 1118, pages 1-14, ISSN 1664-462X, 2017. [DOI] |
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| CERES-Maize model for simulating genotype-by-environment interaction of maize and its stability in the dry and wet savannas of Nigeria, Adnan, A. A.*, Diels, J ., Jibrin, J. M.*, Kamara, A., Shaibu, A. S.*, Craufurd, P. and Menkir, A., in: Field Crops Research, volume 253, number -: 107826, pages 1-11, ISSN 0378-4290, 2020. [DOI] |
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| Challenges and opportunities in biotechnology for enhancing iron and zinc content in maize: Paper presented at the Third Annual Biotechnology Conference at the International Institute of Tropical Agriculture (IITA), 7-23 November, Menkir, A., in: Paper presented at the Third Annual Biotechnology Conference at the International Institute of Tropical Agriculture (IITA), 7-23 November, Ibadan, Nigeria, 2003. |
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| Changes in household food security and poverty status in PROSAB areas of southern Borno state, Nigeria, Amaza, P., Abdoulaye, T., Kwaghe, P.* and Tegbaru, A., International Institute of Tropical Agriculture (IITA), ISBN 978-131-341-2, 2009. |
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| Changes in the composition of the fauna associated with the cassava mealybug, Phenacoccus manihoti, following the introduction of the parasitoid Epidinocarsis lopezi, Neuenschwander, P., Hammond, W. and Hennessey, R. D., in: Insect Science and its Application, volume 8, pages 893-898, 1987. |
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| Does improved storage technology promote modern input use and food security? Evidence from a randomized trial in Uganda, Omotilewa, O. J., Ricker-Gilbert, J., Ainembabazi, J. H. and Shively, G., in: Journal of Development Economics, volume 135, pages 176-198, ISSN 0304-3878, 2018. [DOI] |
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| Does the spillage of petroleum products in Anopheles breeding sites have an impact on the pyrethroid resistance?, Djouaka, R. F., Bakare, A. A.*, Bankole, H. S., Doannio, J. M. C., Coulibaly, O., Kossou, H., Tamo, M., Basene, H. I., Popoola, K. O. K. and Akogbeto, M. C., in: Malaria Journal, volume 6, number 159, 2007. [DOI] |
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| Dominant allele phylogeny and constitutive subgenome haplotype inference in bananas using mitochondrial and nuclear markers, Muiruri, K. S.*, Britt, A. B., Amugune, N. O.*, Nguu, E.*, Chan, S. and Tripathi, L., in: Genome Biology and Evolution, volume 9, number 10, pages 2510-2521, ISSN 1759-6653, 2017. [DOI] |
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| Draft genome sequence of Agrobacterium deltaense strain CNPSo 3391, isolated from a soybean nodule in Mozambique, Scherer, A. J.*, Delamuta, J. R. M.*, Ribeiro, R. A.*, Chibeba, A. M., Boahen, S., Nogueira, M. A.* and Hungria, M.*, in: Microbiology Resource Announcements, volume 8, number 10, pages 1-2, ISSN 2576-098X, 2019. [DOI] |
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| Dual inoculation of Fusarium oxysporum endophytes in banana: effect on plant colonization, growth and control of the root burrowing nematode and the banana weevil, Paparu, P., Dubois, T., Coyne, D. and Viljoen, A.*, in: Biocontrol Science and Technology, volume 19, number 6, pages 639-655, ISSN 1360-0478, 2009. |
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| Evaluating adoption to new crop-livestock-soil management technologies using georeferenced village-level data: the case of cowpea in the dry savannas of West Africa. Pages 169-180 in Natural resources management in African agriculture, Kristjanson, P., Okike, I., Tarawali, S., Kruska, R., Manyong, V. and Singh, B., 2003. |
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| Evaluating and scaling-up integrated Striga hermonthica control technologies among farmers in northern Nigeria, Franke, A., Ellis-Jones, J., Tarawali, G., Schulz, S., Hussaini, M. A.*, Kureh, I.*, White, R., Douthwaite, B., Oyewole, B. and Olanrewaju, A., in: Crop Protection, volume 25, number 8, pages 868-878, ISSN 0261-2194, 2006. |
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| Evaluating farmers' knowledge of shade trees in different cocoa agro-ecological zones in Ghana, Graefe, S., Meyer-Sand, L. F., Chauvette, K., Abdulai, I., Jassogne, L., Vaast, P. and Asare, R., in: Human Ecology, pages 1-12, ISSN 0300-7839, 2017. [DOI] |
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| Evaluating host plant reaction of Musa germplasm to Radopholus similis by inoculation of single primary roots, De Schutter, B., Speijer, P., Dochez, C., Tenkouano, A. and De Waele, D., in: Nematropica, volume 31, number 2, pages 295-300, 2001. |
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| Evaluating maize yield variability and gaps in two agroecologies in northern Ghana using a crop simulation model, MacCarthy, D. S.*, Adiku, S. G. K.*, Freduah, B. S.*, Kamara, A., Narh, S.* and Abdulai, A. L.*, in: South African Journal of Plant and Soil, pages 1-11, ISSN 0257-1862, 2017. [DOI] |
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| Evaluating sustainable intensification of groundnut production in northern Ghana using the sustainable intensification assessment framework approach, Rahman, N. A., Larbi, A.*, Kotu, B. H., Kizito, F. and Hoeschle-Zeledon, I., in: Sustainability, volume 12, number 15: 5970, pages 1-17, ISSN 2071-1050, 2020. [DOI] |
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| Evaluating the efficiency of entomopathogenic fungi against the Asian longhorned beetle, Anoplophora glabripennis (Coleoptera: Cerambycidae), by using cages in the field, Dubois, T., Hajek, A., Jiafu, H. and Li, Z.*, in: Environmental Entomology, volume 33, number 1, pages 62-74, 2004. |
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| Evaluating the environmental-technology gaps of rice farms in distinct agro-ecological zones of Ghana, Asravor, J., Wiredu, A., Siddig, K. and Onumah, E. E.*, in: Sustainability, volume 11, number -:2072, pages 1-16, ISSN 2071-1050, 2019. [DOI] |
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| Evaluating the heterogeneous impacts of adoption of climate-smart agricultural technologies on rural households' welfare in Mali, Awotide, B. A.*, Ogunniyi, A.+, Olagunju, K. O., Bello, L. O ., Coulibaly, A. Y.*, Wiredu, A. N.*, Kone, B.*, Ahamadou, A.*, Manyong, V. and Abdoulaye, T., in: Agriculture, volume 12, number 11: 1853, pages 1-16, ISSN 2077-0472, 2022. [DOI] |
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| Evaluating the marketing opportunities for Shea nut and Shea nut processed products in Uganda: ASARECA monograph, No. 5, Ferris, R. S. B., Collinson, C., Wanda, K., Jagwe, J. and Wright, P., ASARECA monograph, No. 5, International Institute of Tropical Agriculture (IITA), ISBN 978-131-223-8, 2003. |
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| Evaluating use of minitubers in screening yam genotypes for tolerance to fungal rot pathogens, Mwangi, M., Bandyopadhyay, R. and Asiedu, R., in: African Crop Science Conference, pages 273-276, 2005. |
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| Evaluation and taxonomy of agronomically important Striga species, Mohammed, I. B., Musselman, L., Aigbokhan, E. and Berner, D. K., in: Advances in parasitic plant research: proceedings, 6th Parasitic Weeds Symposium, 16-18 April 1996, Junta de Andalucia, Direccion General de Investigacion Agraria, Cordoba, Spain, pages 53-73, 1996. |
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| Evaluation de nouvelles varieties d'igname en Cote d'Ivoire: bilan de trois annees d'experience avec des genotypes ameliores par l'IITA, Ettien, J. B., Tschannen, A. B., Nindjin, C., Asiedu, R., Assa, A. and Girardin, O., in: Atelier national sur le developpement durable de la production et de la consommation de l'igname en Cote d'Ivoire. Abidjan, October 23-26. Association Ivoirienne des Sciences Agronomique (AISA), pages 109-116, 2003. |
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| Evaluation multilocale de la resistance a la cercosporiose noire chez le bananier et le plantain: Guide de recherche de l'Iita, No. 47, Gauhl, F., Pasberg-Gauhl, C., Vuylsteke, D. and Ortiz, R., Guide de recherche de l'Iita, No. 47, International Institute of Tropical Agriculture (IITA), 1995. |
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| Evaluation of 93 accessions of African yam bean (Sphenostylis stenocarpa) grown in Ethiopia for physical, nutritional, antinutritional, and cooking properties, Shitta, N. S.*, Abebe, A. T., Oselebe, H. O.*, Edemodu, A., Alamu, E. O., Abberton, M., Maziya-Dixon, B., Adesokan, M., Fenta, B.* and Abtew, W. G.*, in: Journal of Food Quality, volume 2022, number -: 8386258, pages 1-11, ISSN 0146-9428, 2022. [DOI] |
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| Evaluation of advanced cassava genotypes in Uganda, Ntawuruhunga, P., Ssemakula, G., Ojulong, H., Bua, A.*, Ragama, P., Kanobe, C. and Whyte, J., in: African Crop Science Journal, volume 14, number 1, pages 17-25, 2006. |
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| Evaluation of agronomic performance and genotypic mapping using SNP markers of grain iron and zinc content among rice accessions in Eastern Democratic Republic of Congo, Bukomarhe, C. B.*, Jomo Kenyatta University of Agriculture and Technology, 2024. |
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| Evaluation of agronomic trait of some cassava (Manihot esculenta Crantz) genotype using ground penetrating radar, Omole, D. A.*, University of Ibadan, 2023. |
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| Evaluation of an inoculation method for screening cassava against genotypes against cassava mosaic disease, Ariyo, O., Koerbler, M., Atiri, G.*, Winter, S. and Dixon, A., in: Paper presented at: American Phytopathological Society Meeting, 2003. |
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| Evaluation of application timing in fertilizer micro-dosing technology on millet producing in Niger, West Africa, Hayashi, K., Abdoulaye, T., Gerard, B.* and Bationo, A.*, in: Nutrient Cycling in Agroecosystems, volume 80, pages 257-265, 2008. [DOI] |
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| Evaluation of biofortified cassava varieties for total carotenoid and yield components at preliminary breeding stage: poster, Ogungbesan, A. O., Ogwuche, T. O., Fashoranti, E., Olasupo, K. T., Akpotuzor, P. A., Aina, O., Agbona, A ., Iluebbey, P., Parkes, E. and Kulakow, P., Global Cassava Partnership for the 21st Century - GCP21, 2018. |
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| Evaluation of boric acid for the suppression of the ant Anoplolepis tenella and impact on infestations of its tended scale insect Stictococcus vayssierei in cassava fields in Cameroon, Fotso Kuate, A., Hanna, R., Nanga, S. N., Tindo, M.* and Nagel, P., Abstract, p. 104 in the book of abstracts of the 20th Biennial Conference of the African Association of Insect Scientist, 28-31 October, 2013 Yaounde, Cameroon, 2013. |
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| Evaluation of cassava cultivars for canopy retention and its relationship with field resistance to green spider mite, Nukenine, E., Dixon, A., Hassan, A. and Asiwe, J. A. N., in: African Crop Science Journal, volume 7, number 1, pages 47-57, ISSN 1021-9730, 1999. |
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| Evaluation of cassava genotypes for agronomic performance, correlation with CMD and CBSD parameters and stability across Alupe, Kakamega and Kibos in western Kenya, Navangi, L.*, Githiri, M.*, Ateka, E.*, Kanju, E., Munga, T.*, Tumwegamire, S., Otsyula, R. M.*, Kwena, P. O.*, Woyengo, V. W.*, Malinga, J.* and Okitoi, L. O.*, in: Journal of Experimental Agriculture International, volume 42, number 2, pages 47-62, ISSN 2457-0591, 2020. [DOI] |
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| Evaluation of common bean (Phaseolus vulgaris L.) genotypes for drought stress adaptation in Ethiopia, Darkwa, K.*, Ambachew, D.*, Mohammed, H.*, Asfaw, A. and Blair, M. W., in: The Crop Journal, pages 1-10, ISSN 2095-5421, 2016. [DOI] |
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| Evaluation of cow dung extract for the management of scab induced by Elsinoe phaseoli in cowpea at Samaru, northern Nigeria, Alabi, O. and Emechebe, A., in: Nigerian Journal of Botany, volume 19, number 1, pages 169-175, 2006. |
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| Evaluation of cowpea (Vigna unguiculata (L.) Walp.) landraces to bacterial blight caused by Xanthomonas axonopodis pv. vignicola, Durojaye, H. A., Moukoumbi, Y. D., Dania, V. O.*, Boukar, O., Bandyopadhyay, R. and Ortega-Beltran, A., in: Crop Protection, volume 116, pages 77-81, ISSN 0261-2194, 2019. [DOI] |
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| Evaluation of cowpea genotypes for adaptation to agro-ecologies of Mozambique, Boahen, S., Chikoye, D., Kamara, A. and Boukar, O., Abstract: ASA-CSSA-SSSA international annual meetings, Oct. 21-24, 2012, Cincinnati, Ohio, 2012. |
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| Evaluation of cowpea genotypes for field resistance to the legume pod borer, M. testulalis in Nigeria, Oghiakhe, S., Jackai, L. and Makanjuola, W. A., in: Crop Protection, volume 14, pages 389-394, 1995. |
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| Evaluation of cowpea genotypes for their reactions to Striga gesnerioides in the dry savanna of northeast Nigeria, Omoigui, L., Kamara, A., Massawe, F., Ishiyaku, M.*, Boukar, O., Alabi, S.* and Ekeleme, F., in: African Crop Science Conference Proceedings, pages 273-278, African Crop Science Society, 2007. |
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| Evaluation of cowpea genotypes for variations in their contribution of N and P to subsequent maize crop in three agro-ecological zones of West Africa, Abaidoo, R., Okogun, J., Kolawole, G., Diels, J ., Randall, P. and Sanginga, N., pages 401-412, Springer, ISBN 978-1-4020-5759-5, 2007. |
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| Evaluation of cowpea mini core accessions for resistance to flower bud thrips Megalurothrips sjostedti Trybom (Thysanoptera: Thripidae), Togola, A., Boukar, O., Chamarthi, S. K., Belko, N., Tamo, M., Oigiangbe, O. N.*, Ojo, J., Ibikunle, M. and Fatokun, C., in: Journal of Applied Entomology, pages 1-10, ISSN 0931-2048, 2019. [DOI] |
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| Evaluation of early maturing cowpea (Vigna unguiculata) germplasm for variation in phosphorus use efficiency and biological nitrogen fixation potential with indigenous rhizobial populations, Abaidoo, R., Dare, M. O.*, Killani, A. S. and Opoku, A.*, in: Journal of Agricultural Science, volume 155, number 1, pages 102-116, ISSN 0021-8596, 2017. [DOI] |
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| Evaluation of genotypic variability and analysis of yield and its components in irrigated rice to stabilize yields in the Senegal river valley affected by climate change, Moukoumbi, Y. D., Bayendi Loudit, S. M.*, Sikirou, M., Mboj, D., Hussain, T.*, Bocco, R. and Manneh, B., in: Agronomy, volume 13, number 9: 2218, pages 1-15, ISSN 2073-4395, 2023. [DOI] |
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| Evaluation of improved cassava (Manihot esculenta Crantz) varieties and associated products for proximate, cyanogenic potential and glycemic indices, Nwaoliwe, G., Alamu, E. O., Sanusi, R.* and Maziya-Dixon, B., in: CyTA - Journal of Food, volume 21, number 1, pages 20-30, ISSN 1947-6337, 2023. [DOI] |
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| Evaluation of improved cassava genotypes for yield and related traits for a better breeding strategy under different agroecologies in Nigeria, Adetoro, N. A., Oworu, O. O.*, Nassir, A. L.*, Bello, A. A., Parkes, E., Ogunbayo, S. A., Akinwale, M. G., Aina, O., Agbona, A ., Iluebbey, P., Sanni, L., Maziya-Dixon, B., Dixon, A. and Kulakow, P., in: Euphytica, volume 217, number : 73, pages 1-19, ISSN 0014-2336, 2021. [DOI] |
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| Evaluation of iron, zinc, potassium and proximate qualities of five Musa genotypes, Baiyeri, K., Ede, A. E.*, Otitoju, G. T., Mbah, O.*, Agbo, E., Tenkouano, A. and Faturoti, B., in: Journal of Applied Biosciences, volume 18, pages 1002-1008, ISSN 1997-5902, 2009. |
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| Evaluation of local germplasm for agronomic performance, diseases expression and root qualities, Ayankanmi, T., Kulakow, P., Parkes, E., Rabbi, I. Y., Aina, O., Iluebbey, P. and Ikpan, A., Abstract, P. 196 in the book of abstracts and programme of the 12th Triennial Symposium of International Society for Tropical Root Crops-Africa Branch (ISTRC-AB), 30 - 5, October, Alisa Hotel, Accra, Ghana, 2013. |
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| Evaluation of local germplasm for disease expression, agronomic performance and root qualities, Ayankanmi, T., Parkes, E., Agbona, A ., Iluebbey, P., Ismail, R., Aina, O., Adetoro, N. A., Ikpan, A. and Kulakow, P., University of Agriculture (UNAAB), 2012. |
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| Evaluation of machine learning methods in genomic prediction of banana traits, Karanja, M. W., Edinburgh Napier University, 2022. |
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| Evaluation of maize (Zea mays L.) genotypes as a component of integrated stem borer (Chilo partellus Swinhoe) management in coastal region of Kenya, Ajala, S., Nour, A. M., Ampong-Nyarko, K. and Odindo, M. O., in: African Journal of Agricultural Research, volume 5, number 8, pages 758-763, ISSN 1991-637X, 2010. |
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| Evaluation of maize genotypes derived from carotenoid cleavage dioxygenase 8 (CCD8) mutant production no strigolactone, Ilesanmi, O. J.*, Federal University of Agriculture, 2021. |
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| Evaluation of maize yield in an on-farm maize-soybean and maize-lablab crop rotation systems in the northern Guinea Savanna of Nigeria, Okogun, J., Sanginga, N. and Abaidoo, R., in: Pakistan Journal of Biological Sciences, volume 10, number 21, pages 3905-3909, ISSN 1028-8880, 2007. |
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| Evaluation of MALDI-TOF mass spectrometry for the competitiveness analysis of selected indigenous cowpea (Vigna unguiculata L. Walp.) Bradyrhizobium strains from Kenya, Ndungu, S. M., Messmer, M. M., Ziegler, D., Thuita, M., Vanlauwe, B., Frossard, E. and Thonar, C., in: Applied Microbiology and Biotechnology, pages 1-14, ISSN 0175-7598, 2018. [DOI] |
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| Evaluation of microbial inoculants as biofertilizers for the improvement of growth and yield of soybean and maize crops in savanna soils, Laditi, M. A, Nwoke, C.*, Jemo, M., Abaidoo, R. and Ogunjobi, A.*, in: African Journal of Agricultural Research, volume 7, number 3, pages 405-413, ISSN 1991-637X, 2012. [DOI] |
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| Evaluation of multi-stress tolerant maize varieties for sustainable intensification in northern Guinea Savanna of north eastern Nigeria, Dugje, I., Odo, P. E.*, Teli, I. A.*, Kamara, A. and Asiedu, E. A.*, in: Maydica, volume 59, number 2, pages 136-143, ISSN 0025-6153, 2014. |
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| Evaluation of new cassava genotypes (Euphorbiaceae) for carotenoids content, yield components and reaction to pests and diseases across agro-ecological zones in Cameroon, Tize, I.*, The University of Ngaoundere, 2023. |
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| Evaluation of new hybrid and farmer genotypes on processor productivity, workload and related drudgery: focus on women cassava processors, Bello, A. A., Olaosebikan, O., Okoye, B.*, Madu, T.*, Bouniol, A., Dufour, D., Adinsi, L.*, Rabbi, I. Y. and Teeken, B., International Institute of Tropical Agriculture, 2023. |
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| Evaluation of nutritional and antinutritional properties of African yam bean (sphenostylis stenocarpa (hochst ex. A. rich.) harms.) seeds, Adegboyega, T. T., Abberton, M., Abdelgadir, A. H., Dianda, M., Maziya-Dixon, B., Oyatomi, O., Ofodile, S. and Babalola, O. O.*, in: Journal of Food Quality, volume 2020, number -: 6569420, pages 1-11, ISSN 0146-9428, 2020. [DOI] |
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| Evaluation of phenotypic variation in water yam (Dioscorea alata L.) germplasm using multivariate analysis, Egesi, C. N.*, Asiedu, R., Egunjobi, J.* and Ogunyemi, S., in: Root crops: the small processor and development of local food industries for market economy: proceeding of the Eighth Triennial Syposium of the International Society for Tropical Root Crops - Africa Branch (ISTRC-AB), 12-16 November 2001, Ibadan, Nigeria, pages 461-468, 2003. |
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| Evaluation of pigeonpea genotypes for resistance to sterility mosaic disease, Shivam, C.V.B., Kumar, P. L. and Singh, R, pages 133, 2007. |
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| Evaluation of plant growth and grain yield of 30 cowpea (Vigna unguiculata (L.) Walp, genotypes grown in Mozambique, Ussene, R., Muananamuale, C., Boahen, S., Chikoye, D. and Dakora, F. D.*, CIAT, 2012. |
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| Evaluation of plant growth and grain yield of 30 cowpea genotypes in Mozambique, Ussene, R., Muananamuale, C. and Boahen, S., Abstract, p. 110-111 in Conference Information, Program and Abstracts of Integrated Soil Fertility Management Conference (ISFM), Oct 22-26, 2012, Safari Park Hotel, Nairobi, Kenya, 2012. |
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| Evaluation of promiscuous soybean genotypes at Chitedze, Malawi, Tefera, H., Kanaji, G.*, Boahen, S. and Chikoye, D., Abstract presented at ASA-CSSA-SSSA 2010 International Annual Meeting October 31-November 4, Long Beach, CA, (published online), 2010. |
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| Evaluation of proximate composition and pasting properties of high quality cassava flour (HQCF) from cassava genotypes (Manihot esculenta Crantz) of B-carotene-enriched roots, Alamu, E. O., Maziya-Dixon, B. and Dixon, A., in: LWT - Food Science and Technology, volume 86, pages 501-506, ISSN 0023-6438, 2017. [DOI] |
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| Evaluation of quality and acceptability of Snack (Kokoro) produced from synthetic Provitamin A Maize (Zea mays) genotypes, Akinsola, O.*, Alamu, E. O., Otegbayo, B.*, Menkir, A. and Maziya-Dixon, B., in: Frontiers in Sustainable Food Systems, volume 4, number : 576217, pages 1-13, ISSN 2571-581X, 2020. [DOI] |
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| Evaluation of sampling methods for Megalurothrips sjostedti (Trybom) (Thysanoptera: Thripidae) on cowpea, Salifu, A. B. and Singh, S. R., in: Bulletin of Entomological Research, volume 77, pages 451-456, 1987. |
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| Evaluation of sampling methods for Megalurothrips sjostedti (trybom) (Thysanoptera: Tripidae) on cowpea, Salifu, A. B. and Singh, S. R., in: Bulletin of Entomological Research, volume 77, pages 451-456, 1987. |
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| Evaluation of seed treatment chemicals for the control of seedling bacterial blight of cowpea in Northern Nigeria, Alabi, O. and Emechebe, A., in: Archives of Phytopathology and Plant Protection, volume 37, pages 119-122, 2004. |
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| Evaluation of soybean (Glycine max (L.) Merr.) breeding lines and genotype-by-environment interaction across production environments in Southern Africa, Nachilima, C., Cordoba-Novoa, H., Hoyos-Villegas, V., Chigeza, G., Manda, N., Lungu, D.* and Kamfwa, K.*, in: Journal of Plant Breeding and Crop Science, volume 13, number 4: EC6316F68356, pages 203-215, ISSN 2006-9758, 2021. [DOI] |
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| Evaluation of the Dissemination of New Banana (Musa spp.) Technologies in Central Ghana- the Role of Technology Characteristics, Dzomeku, B. M.*, Staver, C., Aflakpui, G.*, Sanogo, D., Garming, H., Ankomah, A.* and Darkey, S.*, in: Acta Horticulturae, volume 2, number 879, pages 735-740, ISSN 0567-7572, 2010. |
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| Evaluation of training on good agronomic practices for seed yam production in Nigeria, Mignouna, D., Aighewi, B., Maroya, N., Akinribido, B., Balogun, M., Akintayo, O. T., Amah, D., Awotide, B. A., Dontsop-Nguezet, P., Abdoulaye, T., Asiedu, R. and Manyong, V., in: Seeds, volume 2, number 1, pages 116-126, ISSN 2674-1024, 2023. [DOI] |
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| Evaluation of water yam (Dioscorea alata I.) genotypes for reaction to yam anthracnose disease, Ogunyemi, S. and Asiedu, R., in: Proceedings of 9th ISTRC-AB symposium, pages 368-374, Mombasa, Kenya, 2007. |
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| Evaluation of water yam (Dioscorea alata L.) genotypes for reaction to yam anthracnose disease, Ogunyemi, S. and Asiedu, R., in: 9th Triennial Symposium of the Internaitonal Society for Tropical Root Crops-Africa Branch (ISTRC-AB); October 31 to November 5, 2004, Mombasa, Kenya, 2004. |
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| Evaluation of water yam (Dioscorea alata L.) germplasm for reaction to yam anthracnose and virus diseases and their effect on yield, Egesi, C. N.*, Odu, B., Ogunyemi, S., Asiedu, R. and Hughes, J., in: Journal of Phytopathology, volume 155, number 9, pages 536-543, 2007. |
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| Evaluation of wheat genotypes for heat stress tolerance and identification of early stress indicators, Chileshe, P.*, Chikuta, S.*, Lungu, D.*, Kamfwa, K.* and Omondi, J. O., in: Plant Physiology Reports, pages 1-13, ISSN 2662-253X, 2023. [DOI] |
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| Evaluation of white yam (Dioscorea rotundata) genotypes for Arbuscular mycorrhizal colonization, leaf nutrient concentrations and tuber yield under NPK fertilizer application, Dare, M. O.*, Fagbola, O.*, Abaidoo, R. and Asiedu, R., in: Journal of Plant Nutrition, volume 37, number 5, pages 658-673, ISSN 0190-4167, 2014. [DOI] |
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| Evaluation of yam genotypes for field reaction to biotic constraints and nutritional characteristics in two agro-ecologies of Cameroon, Nukenine, E.*, Fombang, E. N.*, Chouka, F. P.*, Njukwe, E., Tenkouano, A. and Asiedu, R., Abstract (Oral presentation) in Book of Abstracts of the 11th Triennial Symposium of ISTRC-AB, held at Memling Hotel, Kinshasa. 4-8 October, 2010. |
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| Evaluation of yam host-plant response to root-knot nematodes in Uganda, Mudiope, J., Speijer, P., Maslen, N. and Adipala, E.*, in: African Plant Protection, volume 4, pages 119-122, ISSN 1023-3121, 1998. |
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| Evaluation participative des performances agronomiques, culinaires et technologiques de quelques variétés améliorées de manioc en milieu paysan au nord et au centre du Bénin, Dossou, R.*, Hanna, R., Onzo, A., Padonou, S. W.* and Amadji, F.*, Abstract (Oral presentation) in Book of Abstracts of the 11th Triennial Symposium of ISTRC-AB, held at Memling Hotel, Kinshasa. 4-8 October, 2010. |
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| Evidence for high evolutionary potential of Colletotrichum gloeosporioides, the causal agent of yam anthracnose disease, Abang, M., Asiedu, R., Hoffmann, P., Wolf, G., Mignouna, H. and Winter, S., in: 9th Triennial Symposium of the International Society for Tropical Root Crops-Africa Branch (ISTRC-AB); October 31 to November 5, 2004, Mombasa, Kenya, 2004. |
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| Evidence for high evolutionary potential of Colletotrichum gloeosporioides, the causal agent of yam anthracnose disease, Abang, M., Asiedu, R., Hoffmann, P., Wolf, G., Mignouna, H. and Winter, S., in: Proceedings of 9th ISTRC-AB symposium, Mombasa, Kenya, pages 602-613, Mombasa, Kenya, 2007. |
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| Evidence of a multiple insecticide resistance in the malaria vector Anopheles funestus in south west Nigeria, Djouaka, R. F., Atoyebi, S. M., Tchigossou, G., Riveron, J., Irving, H., Akoton, R., Kusimo, M. O., Bakare, A. A.* and Wondji, C. S., in: Malaria Journal, volume 15, number 565, pages 1-10, ISSN 1475-2875, 2016. [DOI] |
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| Genetic diversity among Xanthomonas axonopodis pv manihotis isolated from the western states of Nigeria, Ogunjobi, A.*, Dixon, A. and Fagade, O.*, in: Proceedings of 9th ISTRC-AB symposium, pages 557-563, Mombasa, Kenya, 2007. |
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| Genetic diversity and genome-wide association studies of bush yam (Dioscorea praehensilis Benth.), Adewumi, A. S.*, University of Cape Coast, 2022. |
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| Genetic diversity and nitrogen fixation in underutilized tropical legumes: thesis submitted in fulfilment of the requirements for the degree of Doctor of Philosophy in Biology at the North-West University, Adegboyega, T. T.*, North-West University, 2019. |
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| Genetic diversity and population structure analysis of soybean [Glycine max (L.) Merrill] genotypes using agro-morphological traits and SNP markers, Chiemeke, F. K.*, Olasanmi, B.*, Agre, A. P., Mushoriwa, H ., Chigeza, G. and Abebe, A. T., in: Genes, volume 15, number 11: 1373, pages 1-16, ISSN 2073-4425, 2024. [DOI] |
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| Genetic diversity and population structure of an African yam bean (Sphenostylis stenocarpa) collection from IITA GenBank, Shitta, N. S.*, Unachukwu, N., Edemodu, A., Abebe, A. T., Oselebe, H. O.* and Abtew, W. G.*, in: Scientific Reports, volume 12, number -: 4437, pages 1-13, ISSN 2045-2322, 2022. [DOI] |
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| Genetic diversity and population structure of cacao (Theobroma cacao L.) germplasm from Sierra Leone and Togo based on KASP- SNP genotyping, Bhattacharjee, R., Luseni, M. M., Ametefe, K., Agre, A. P., Kumar, P. L. and Grenville-Briggs, L. J., in: Journal Article Preprints, pages 1-21, 2023. [DOI] |
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| Genetic diversity and population structure of Cacao (Theobroma cacao L.) germplasm from Sierra Leone and Togo based on KASP-SNP genotyping, Bhattacharjee, R., Luseni, M. M., Ametefe, K., Agre, A. P., Kumar, P. L. and Grenville-Briggs, L. J., in: Agronomy, volume 14, number 11: 2458, pages 1-17, ISSN 2073-4395, 2024. [DOI] |
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| Genetic diversity and population structure of maize inbred lines with varying levels of resistance to striga hermonthica using agronomic trait-based and SNP markers, Stanley, A., Menkir, A., Agre, A. P., Ifie, B. E., Tongoona, P.*, Unachukwu, N., Meseka, S. K., Mengesha Abera, W. and Gedil, M., in: Plants, volume 9, number 9: 1223, pages 1-18, ISSN 2223-7747, 2020. [DOI] |
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| Genetic diversity and re-classification of coffee (Coffea canephora Pierre ex A. Froehner) from South Western Nigeria through genotyping-by-sequencing-single nucleotide polymorphism analysis, Anagbogu, C. F.*, Bhattacharjee, R., Ilori, C. O.*, Tongyoo, P.*, Dada, K. E.*, Muyiwa, A.*, Gepts, P. and Beckles, D. M., in: Genetic Resources and Crop Evolution, pages 1-12, ISSN 0925-9864, 2019. [DOI] |
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| Genetic diversity assessment of soybean (Glycine max L.) accessions from two Countries using diversity array technology sequencing (DArTseq) and morphological descriptor, Ojo, O. A.*, University of Ibadan, 2021. |
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| Genetic diversity assessment of winged bean [Psophocarpus tetragonolobus (L.) DC.] accessions using agronomic and seed morphometric traits, Bhadmus, A., Abberton, M., Idehen, E. O.*, Ekanem, U. O., Paliwal, R. and Oyatomi, O., in: Crops, volume 3, number 2, pages 170-183, ISSN 2673-7655, 2023. [DOI] |
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| Genetic diversity in African yam bean [Spenostylis stenocarpa (Hochst ex A. Rich.) Harms] collection, Ebiti, E. K.*, University of Ibadan, 2023. |
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| Genetic diversity in bambara groundnut (Vigna subterranea (L.) verdc.) as revealed by phenotypic descriptors and DArT marker analysis, Olukolu, B. A., Mayes, S., Stadler, F., Ng, N. Q., Fawole, I.*, Dumet, D., Azam-Ali, S., Abbott, A. G. and Kole, C.*, in: Genetic Resources and Crop Evolution, ISSN 0925-9864, 2011. [DOI] |
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| Genetic diversity of Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae) populations and presence of the B biotype and a non-B biotype that can induce silverleaf symptoms in quash, in Uganda, Sseruwagi, P., Legg, J., Maruthi, M. N., Colvin, J., Rey, M.* and Brown, J., in: Annals of Applied Biology, volume 147, number 3, pages 253-265, ISSN 0003-4746, 2005. |
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| Genetic diversity of cassava landraces and documentation of farmer's knowledge in Lamu, Kenya, Mutoni, C. K., Nzuve, F. M.*, Miano, D.*, Kivuva, B. M.*, Obare, I. J.*, Shah, T. and Ferguson, M., in: Genetic Resources and Crop Evolution, pages 1-13, ISSN 0925-9864, 2023. [DOI] |
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| Genetic diversity of Ethiopian cowpea [Vigna unguiculata (L) Walp] genotypes using multivariate analyses, Walle, T.*, Mekbib, F.*, Amsalu, B.* and Gedil, M., in: Ethiopian Journal of Agricultural Sciences, volume 29, number 3, pages 89-104, ISSN 2415-2382, 2019. |
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| Genetic diversity of Fusarium oxysporum f. sp. cubense in east and central Africa based on vegetative compatibility, ribosomal DNA polymorphism and phylogenetic analysis. Proceedings (Poster) of the International Banana Symposium, Taiwan, 19-22 November, Karangwa, P.*, Mostert, G.*, Blomme, G., Beed, F., Lepoint, P. and Viljoen, A.*, 2012. |
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| Genetic diversity of organoleptic properties in water yam (Dioscorea alata L.), Egesi, C., Asiedu, R., Egunjobi, J.* and Bokanga, M., in: Journal of the Science of Food and Agriculture, volume 83, pages 858-865, ISSN 0022-5142, 2003. [DOI] |
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| Genetic diversity, population structure and key phenotypic traits driving variation within soyabean (Glycine max) collection in Ghana, Denwar, N. N.*, Awuku, F. J.*, Diers, B. W., Addae-Frimpomaah, F.*, Chigeza, G., Oteng-Frimpong, R.*, Puozaa, D. K.* and Barnor, M. T.*, in: Plant Breeding, pages 1-11, ISSN 0179-9541, 2019. [DOI] |
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| Genetic engineering of banana nonexpressor of pathogenesis related gene for resistance to xanthomonas wilt and Fusarium wilt diseases, Tripathi, J., Kenyatta University, 2018. |
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| Genetic gain in yield and agronomic characteristics of cowpea cultivars developed in the Sudan Savannas of Nigeria over the past three decades, Kamara, A., Tefera, H., Ewansiha, S. U., Ajeigbe, H., Okechukwu, R., Boukar, O. and Omoigui, L.*, in: Crop Science, volume 51, number 5, pages 1877-1886, ISSN 0011-183X, 2011. [DOI] |
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| Genetic gains from 30 years of cassava breeding in Nigeria for storage root yield and disease resistance in elite cassava genotypes, Okechukwu, R. and Dixon, A., in: Journal of Crop Improvement, volume 22, number 2, pages 181-208, 2008. |
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| Genetic gains in grain yield of a maize population improved through marker assisted recurrent selection under stress and non-stress conditions in west Africa, Abdulmalik, R. O., Menkir, A., Meseka, S. K., Unachukwu, N., Ado, S. G.*, Olarewaju, J. D.*, Aba, D. A.*, Hearne, S., Crossa, J. and Gedil, M., in: Frontiers in Plant Science, volume 8, number 841, pages 1-11, ISSN 1664-462X, 2017. [DOI] |
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| Genetic gains in nordic spring barley breeding (1930s-early 1990s), Ortiz, R., Nurminiemi, M., Madsen, S., Rognli, O. and Bjørnstad, Å., in: Euphytica, volume 126, pages 283-289, 2002. |
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| Genetic loci controlling carotenoid biosynthesis in diverse tropical maize lines, Azmach, G ., Menkir, A., Spillane, C. and Gedil, M., in: G3: Genes Genomes Genetics, volume 8, pages 1049-1065, ISSN 2160-1836, 2018. [DOI] |
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| Genetic mapping using genotyping-by-sequencing in the clonally propagated cassava, Rabbi, I. Y., Hamblin, M., Gedil, M., Kulakow, P., Ferguson, M., Ikpan, A., Ly, D. and Jannink, J., in: Crop Science, volume 54, pages 1-13, ISSN 0011-183X, 2014. [DOI] |
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| Genetic parameters for agronomic characteristics: 1: early and intermediate breeding populations of true potato seed, Ortiz, R. and Golmirzaie, A., in: Hereditas, volume 139, pages 212-216, 2003. |
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| Genetic parameters for agronomic characteristics: II: intermediate and advanced stages in a true potato seed breeding population, Ortiz, R. and Golmirzaie, A., in: Hereditas, volume 139, pages 217-222, 2003. |
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| Genetic relationships among local cassava germplasm in Sierra Leone based on agrobotanical characteristics. Pages 469-476 in The small processor and development of local food industries for market economy, Massaquoi, F., Jalloh, A.* and Dixon, A., in: The small processor and development of local food industries for market economy: proceedings of the 8th Symposium of the International Society for Tropical Root Crops-Africa Branch (ISTRC-AB), 12-16 November 2001, IITA, Ibadan, Nigeria, pages 469-476, International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria, 2004. |
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| Genetic resources and biotechnology, volume 3, Regency, 2005. |
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| Genetic Resources and Biotechnology, Volume Three, Regency Publications. |
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| Genetic structure and origin of Busseola fusca (Fuller) (Lepidoptera, Noctuidae) populations in Cameroon, Sezonlin, M., Ndemah, R., Goergen, G ., Le Ru, B, Dupas, S. and Silvain, J., in: Entomologia Experimentalis et Applicata, volume 145, number 2, pages 143-152, ISSN 0013-8703, 2012. [DOI] |
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| Genetic transformation of cassava - independent of genotype, Jorgensen, K., Ingelbrecht, I., Jensen, S., Olsen, E., Sorensen, C., Kannangara, R. and Moller, B., 2008. |
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| Genetic variability and association mapping for yield and yield-related traits in African yam bean [Sphenostylis stenocarpa (Hochst ex. A. Rich) Harms], Olomitutu, O. E.*, University of Ibadan, 2023. |
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| Genetic variability and genotype by environment interaction of two major cassava processed products in multi-environments, Aghogho, C. I., Eleblu, J. S. Y.*, Bakare, M. A., Kayondo, S. I., Asante, I.*, Parkes, E., Kulakow, P., Offei, S.* and Rabbi, I. Y., in: Frontiers in Plant Science, volume 13, number -: 974795, pages 1-17, ISSN 1664-462X, 2022. [DOI] |
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| Genetic variability and population structure of Ethiopian Sesame (Sesamum indicum L.) germplasm assessed through phenotypic traits and simple sequence repeats markers, Teklu, D. H.*, Shimelis, H.*, Abebe, A. T., Mashilo, J.*, Zhang, X.*, Zhang, Y.*, Dossa, K.* and Shayanowako, A. I. T.*, in: Plants, volume 10, number 6: 1129, pages 1-18, ISSN 2223-7747, 2021. [DOI] |
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| Genetic variability of carotenoids and polyploid induction towards vitamin A biofortification in plantain (Musa spp.), Amah, D., University of the Free State, 2018. |
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| Genetic Variability Studies in Ethiopian Shallot (Allium cepa L. var. ascalonicum Backer) Genotypes, Sendek, F., Tefera, H. and Tsadik, K. W., in: East African Journal of Sciences, volume 2, number 2, pages 130-134, ISSN 1992-0407, 2009. |
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| Genetic variation and genotype X environment interaction for yield and other agronomic traits in cassava in Nigeria, Egesi, C. N.*, Ilona, P., Ogbe, F., Akoroda, M. and Dixon, A., in: Agronomy Journal, volume 99, pages 1137-1142, ISSN 0002-1962, 2007. [DOI] |
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| Genetic variation and genotype x environment interaction in yams (Dioscorea spp.) for root colonization by arbuscular mycorrhiza, Dare *, O., Abaidoo, R., Fagbola, O.* and Asiedu, R., in: Journal of Food, Agriculture and Environment, volume 6, number 2, pages 227-233, ISSN 1459-0255, 2008. |
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| Genetic variation for total carotene, iron, and zinc contenet in maize genotypes and cassava clones, Maziya-Dixon, B., Kling, J., Menkir, A. and Dixon, A., in: Food and Nutrition Bulletin, volume 21, number 4, pages 419-422, 2000. |
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| Genetics and genomics resources in ex situ germplasm conservation. The evolving role of genebanks in the light of developments in molecular genetics, Leon, Spain: Expert Meeting. 18 November, 2002. |
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| GENNOVATE MAIZE CGIAR Research Program synthesis report: Nigeria cases, Gaya, H., 2016. |
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| Genome analyses reveal the hybrid origin of the staple crop white Guinea yam (Dioscorea rotundata), Sugihara, Y., Darkwa, K., Yaegashi, H., Natsume, S., Shimizu, M., Abe, A., Hirabuchi, A., Ito, K., Oikawa, K., Tamiru-Oli, M., Ohta, A., Matsumoto, R., Agre, A. P., De Koeyer, D ., Pachakkil, B., Yamanaka, S., Muranaka, S., Takagi, H., White, B., Asiedu, R., Innan, H., Asfaw, A., Adebola, P. O. and Terauchi, R., in: Proceedings of the National Academy of Sciences (PNAS), volume 117, number 50, pages 31987-31992, ISSN 0027-8424, 2020. [DOI] |
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| Genome assembly, comparative genomics, and identification of genes/pathways underlying plant growth-promoting traits of an actinobacterial strain, Amycolatopsis sp. (BCA-696), Gandham, P., Vadla, N.*, Saji, A.*, Srinivas, V., Ruperao, P., Selvanayagam, S., Saxena, R. K., Rathore, A., Gopalakrishnan, S. and Thakur, V.*, in: Scientific Reports, volume 14, number -: 15934, pages 1-11, ISSN 2045-2322, 2024. [DOI] |
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| Genome editing for sustainable agriculture in Africa, Tripathi, L., Dhugga, K. S., Ntui, V. O., Runo, S.*, Syombua, E. D., Muiruri, K. S., Wen, Z. and Tripathi, J., in: Frontiers in Genome Editing, volume 4, number : 876697, pages 1-20, ISSN 2673-3439, 2022. [DOI] |
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| Genome engineering: a new frontier for improving root and tuber crops, Okwuonu, I. C.*, Obidiegwu, J., Onyeka, T. J.* and Egesi, C., pages 49-68, chapter 5, CRC Press, ISBN 978-03677-6695-5, 2022. [DOI] |
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| Genome of the African cassava whitefly Bemisia tabaci and distribution and genetic diversity of cassava-colonizing whiteflies in Africa, Chen, W., Wosula, E. N., Hasegawa, D. K., Casinga, C. M., Shirima, R. R., Fiaboe, K., Hanna, R., Fotso Kuate, A., Goergen, G ., Tamo, M., Mahuku, G., Murithi, H., Tripathi, L., Mware, B., Kumar, P. L., Ntawuruhunga, P., Moyo, C., Yomeni, M. O., Boahen, S., Edet, M., Awoyale, W., Wintermantel, W. M., Ling, K., Legg, J. and Fei, Z., in: Insect Biochemistry and Molecular Biology, volume 110, pages 112-120, ISSN 0965-1748, 2019. [DOI] |
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| Genome resources for climate-resilient cowpea, an essential crop for food security, Munoz-Amatriain, M., Mirebrahim, H., Xu, P.*, Wanamaker, S., Luo, M., Alhakami, H., Alpert, M., Atokple, I.*, Batieno, B. J.*, Boukar, O., Bozdag, S., Cisse, N.*, Drabo, I.*, Ehlers, J. D., Farmer, A., Fatokun, C., Gu, Y. Q., Guo, Y., Huynh, B., Jackson, S. A., Kusi, F.*, Lawley, C. T., Lucas, M. R., Ma, Y., Timko, M. P., Wu, J., You, F., Roberts, P. A., Lonardi, S. and Close, T. J., in: Plant Journal, pages 1-40, ISSN 0960-7412, 2016. [DOI] |
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| Genome sequence data from 17 accessions of Ensete ventricosum, a staple food crop for millions in Ethiopia, Yemataw, Z.*, Muzemil, S.*, Ambachew, D.*, Tripathi, L., Tesfaye, K., Chala, A.*, Farbos, A., O'Neill, P., Moore, K., Grant, M. and Studholme, D. J., in: Data in Brief, volume 18, pages 285-293, ISSN 2352-3409, 2018. [DOI] |
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| Genome sequence of a Spodoptera frugiperda multiple Nucleopolyhedrovirus isolated from fall armyworm (Spodoptera frugiperda) in Nigeria, west Africa, Wennmann, J., Tepa-Yotto, G., Jehle, J. A. and Goergen, G ., in: Microbiology Resource Announcements, volume 10, number 34: e00565-21, pages 1-3, ISSN 2576-098X, 2021. [DOI] |
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| Genome sequence of the banana aphid, Pentalonia nigronervosa Coquerel (Hemiptera: Aphididae) and its symbionts, Mathers, T. C., Mugford, S. T., Hogenhout, S. A. and Tripathi, L., in: G3-Genes Genomes Genetics, volume 10, number 12, pages 4315-4321, ISSN 2160-1836, 2020. [DOI] |
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| Genome sequencing data for wild and cultivated bananas, plantains and abaca, Sambles, C., Venkatesan, L., Shittu, O. M., Harrison, J., Moore, K., Tripathi, L., Grant, M., Warmington, R. and Studholme, D. J., in: Data In Brief, volume 33, number -: 106341, pages 1-7, ISSN 2352-3409, 2020. [DOI] |
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| Genome sequencing of the staple food crop white Guinea yam enables the development of a molecular marker for sex determination, Tamiru, M., Natsume, S., Takagi, Hiroki, White, B., Yaegashi, H., Shimizu, M., Yoshida, K., Uemura, A., Oikawa, K., Abe, A., Urasaki, N., Yamanaka, S., Matsumoto, R., Muranaka, S., Girma Tessema, G., Lopez-Montes, A., Gedil, M., Bhattacharjee, R., Abberton, M., Kumar, P. L., Rabbi, I. Y., Tsujimura, M., Terachi, T., Haerty, W., Corpas, M., Kamoun, S., Kahl, G., Takagi, H., Asiedu, R. and Terauchi, R., in: BMC Biology, volume 15, number 86, pages 1-20, ISSN 1741-7007, 2017. [DOI] |
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| Genome wide association analysis of a stemborer egg induced ''call-for-help'' defence trait in maize, Tamiru, A., Paliwal, R., Manthi, S. J., Odeny, D. A., Midega, A. O., Khan, Z. R., Pickett, J. A. and Bruce, J. A., in: Scientific Reports, volume 10, number 1: 11205, pages 1-12, ISSN 2045-2322, 2020. [DOI] |
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| Genome wide selection- moving breeding for Striga tolerance into the genomics era., Hearne, S., Menkir, A., Badu-Apraku, B. and Franco, J., Abstract (Poster) in the proceedings of the 11th World Congress on parasitic plants, 7 - 12 June, Martina Franca, Italy, 2011. |
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| Genome-edited foods, Tuncel, A., Pan, C.*, Sprink, T., Wilhelm, R., Barrangou, R., Li, L., Shih, P. M., Varshney, R. K., Tripathi, L., Van Eck, J., Mandadi, K. and Qi, Y., in: Nature Reviews Bioengineering, pages 1-18, ISSN 2731-6092, 2023. [DOI] |
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| Genome-wide association analyses reveal the genetic basis of biomass accumulation under symbiotic nitrogen fixation in African soybean, Torkamaneh, D., Chalifour, F. P., Beauchamp, C. J., Agrama, H., Boahen, S., Maaroufi, H., Rajcan, I. and Belzile, F., in: Theoretical and Applied Genetics, volume 133, pages 665-676, ISSN 0040-5752, 2020. [DOI] |
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| Genome-wide association analysis for tuber dry matter and oxidative browning in water yam (Dioscorea alata L.), Gatarira, C., Agre, A. P., Matsumoto, R., Edemodu, A., Adetimirin, V.*, Bhattacharjee, R., Asiedu, R. and Asfaw, A., in: Plants, volume 9, number 8: 969, pages 1-19, ISSN 2223-7747, 2020. [DOI] |
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| Genome-wide association analysis of phenotypic traits in Bambara groundnut under drought-stressed and non-stressed conditions based on DArTseq SNP, Odesola, K. A., Olawuyi, O. J.*, Paliwal, R., Oyatomi, O. and Abberton, M., in: Frontiers in Plant Science, volume 14, number -: 1104417, pages 1-14, ISSN 1664-462X, 2023. [DOI] |
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| Genome-wide association analysis of Striga resistance in early maturing tropical maize inbred lines, Adewale, S. A., Badu-Apraku, B., Garcia-Oliveira, A. L., Agre, A. P., Gedil, M., Sneller, C. and Adewale, R. O.*, Abstract P3. in, 15th World Congress on Parasitic Plants, June 30 - July 5, 2019, Amsterdam, The Netherlands, 2019. |
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| Genome-wide association analysis reveals genetic architecture and candidate genes associated with grain yield and other traits under low soil nitrogen in early-maturing white quality protein maize inbred lines, Bhadmus, O. O., Badu-Apraku, B., Adeyemo, O.*, Agre, A. P., Offornedo, Q. N. and Ogunkanmi, L. A.*, in: Genes, volume 13, number 5: 826, pages 1-21, ISSN 2073-4425, 2022. [DOI] |
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| Genome-wide association analysis reveals new insights into the genetic architecture of defensive, agro-morphological and quality-related traits in cassava, Rabbi, I. Y., Kayondo, S. I., Bauchet, G. J., Yusuf, M., Aghogho, C. I., Ogunpaimo, K., Uwugiaren, R., Smith, I. A., Peteti, P., Agbona, A ., Parkes, E., Ezenwaka, L.*, Wolfe, M., Jannink, J., Egesi, C. and Kulakow, P., in: Plant Molecular Biology, pages 1-19, ISSN 0167-4412, 2020. [DOI] |
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| Genome-wide association and prediction reveals genetic architecture of cassava mosaic disease resistance and prospects for rapid genetic improvement, Wolfe, M., Rabbi, I. Y., Egesi, C. N.*, Hamblin, M., Kawuki, R. S.*, Kulakow, P., Lozano, R., Carpio, D. P., Ramu, P. and Jannink, J., in: Plant Genome, volume 9, number 2, pages 1-13, ISSN 1940-3372, 2016. [DOI] |
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| Genome-wide association mapping and genomic prediction for CBSD resistance in Manihot esculenta, Kayondo, I. S.*, Del Carpio, D. P., Lozano, R., Ozimati, A.*, Wolfe, M., Baguma, Y.*, Gracen, V. E.*, Offei, S.*, Ferguson, M., Kawuki, R. S.* and Jannink, J., in: Scientific Reports, volume 8, number 1549, pages 1-12, ISSN 2045-2322, 2018. [DOI] |
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| Genome-wide association mapping and stability analysis of root mealiness in cassava (Manihot esculenta Crantz), Uchendu, U. K.*, University of Ghana, 2020. |
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| Genome-wide association mapping of correlated traits in cassava: dry matter and total carotenoid content, Rabbi, I. Y., Udoh, L. I., Wolfe, M., Parkes, E., Gedil, M., Dixon, A., Ramu, P., Jannink, J. and Kulakow, P., in: Plant Genome, volume 10, number 3, pages 1-14, ISSN 1940-3372, 2017. [DOI] |
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| Genome-wide association studies for sex determination and cross-compatibility in water yam (Dioscorea alata L.), Mondo, J., Agre, A. P., Asiedu, R., Akoroda, M. O.* and Asfaw, A., in: Plants, volume 10, number 7: 1412, pages 1-18, ISSN 2223-7747, 2021. [DOI] |
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| Genome-wide association studies of photosynthetic and agronomic traits in cowpea collection, Sansa, O., Abberton, M., Ariyo, O. J.*, Paliwal, R., Ige, A. D., Dieng, I., Ayo-Vaughan, M. A.*, Olowe, V. I.* and Oyatomi, O., in: G3-Genes Genomes Genetics, volume 14, number 2: jkae233, pages 1-20, ISSN 2160-1836, 2024. [DOI] |
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| Genome-wide association studies of photosynthetic and agronomic traits, inter-character correlation and stability performance in core collections of cowpea [Vigna unguiculata (L.) Walp], Sansa, O. O.*, Federal University of Agriculture, Abeokuta, 2024. |
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| Genome-wide association studies of Striga resistance in extra-early maturing quality protein maize inbred lines, Okunlola, G., Badu-Apraku, B., Ariyo, O.*, Agre, A. P., Offornedo, Q. N. and Ayo-Vaughan, M. A.*, in: G3-Genes Genomes Genetics, volume 13, number 2: jkac237, pages 1-11, ISSN 2160-1836, 2023. [DOI] |
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| Genome-wide association studies reveals new candidate genes associated with resistance to Striga gesneroides in Cowpea [Vigna unguiculata (L.) Walp.] accessions from sub-Saharan Africa, Koura, A. A.*, Kena, A. W.*, Annor, B.*, Adejumobi, I. I., Sayadi Maazou, A. R., Awuku, F. J.*, Attamah, P.*, Boukar, O. and Richard, A.*, in: Ecological Genetics and Genomics, volume 32, number -: 100267, pages 1-8, ISSN 2405-9854, 2024. [DOI] |
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| Genome-wide association studies reveals new candidate genes associated with resistance to Striga gesneroides in Cowpea [Vigna unguiculata (L.) Walp.] accessions from sub-Saharan Africa, Koura, A. A.*, Kena, A. W.*, Annor, B.*, Adejumobi, I. I., Sayadi Maazou, A. R., Awuku, F. J.*, Attamah, P.*, Boukar, O. and Akromah, R.*, in: Ecological Genetics and Genomics, volume 32, number -: 100267, pages 1-8, ISSN 2405-9854, 2024. [DOI] |
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| Genome-wide association study and QTL mapping reveal genomic loci associated with Fusarium ear rot resistance in tropical maize germplasm, Chen, J.*, Shrestha, R., Ding, J.*, Zheng, H., Mu, C., Wu, J.* and Mahuku, G., in: G3-Genes Genomes Genetics, pages 1-48, ISSN 2160-1836, 2016. [DOI] |
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| Genome-wide association study for yield and quality of granulated cassava processed product, Aghogho, C. I., Kayondo, S. I., Eleblu, J. S. Y.*, Ige, A. D., Asante, I.*, Offei, S.*, Parkes, E., Egesi, C. N.*, Mbanjo, E., Shah, T., Kulakow, P. and Rabbi, I. Y., in: Plant Genome, volume 17, number -: e20469, pages 1-19, ISSN 1940-3372, 2024. [DOI] |
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| Genome-wide association study of important agronomic traits in cassava using genotyping-by-sequencing SNP data, Rabbi, I. Y., Gedil, M., Kulakow, P., Hamblin, M. and Jannink, J., Abstract, in Program and Abstracts, Second Scientific Conference of the Global Cassava Partnership for the 21st Century (GCP21-II). June 18-22, Kampala, Uganda., 2012. |
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| Genome-wide association study of resistance to cassava green mite pest and related traits in cassava, Ezenwaka, L.*, Del Carpio, D. P., Jannink, J., Rabbi, I. Y., Danquah, E.*, Asante, I.*, Danquah, A.*, Blay, E.* and Egesi, C., in: Crop Science, volume 58, pages 1907-1918, ISSN 0011-183X, 2018. [DOI] |
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| Genome-wide association study of root mealiness and other texture-associated traits in cassava, Uchendu, K.*, Njoku, D.*, Agre, A. P., Dzidzienyo, D.*, Tongoona, P.*, Offei, S.* and Egesi, C., in: Frontiers in Plant Science, volume 12, number : 770434, pages 1-16, ISSN 1664-462X, 2021. [DOI] |
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| Genome-wide association study of Striga resistance in early maturing white tropical maize inbred lines, Adewale, S. A., Badu-Apraku, B., Akinwale, R. O.*, Agre, A. P., Gedil, M. and Garcia-Oliveira, A. L., in: BMC Plant Biology, volume 20, number -: 203, pages 1-16, ISSN 1471-2229, 2020. [DOI] |
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| Genome-wide association study revealed SNP alleles associated with seed size traits in African yam bean (Sphenostylis stenocarpa (Hochst ex. A. Rich.) harms), Olomitutu, O. E., Paliwal, R., Abe, A.*, Oluwole, O. O., Oyatomi, O. and Abberton, M., in: Genes, volume 13, number 12: 2350, pages 1-19, ISSN 2073-4425, 2022. [DOI] |
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| Genome-wide association study reveals genetic architecture and candidate genes for yield and related traits under terminal drought, combined heat and drought in tropical maize germplasm, Osuman, A. S., Badu-Apraku, B., Karikari, B.*, Ifie, B. E.*, Tongoona, P.* and Danquah, E.*, in: Genes, volume 13, number 2: 349, pages 1-21, ISSN 2073-4425, 2022. [DOI] |
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| Genome-wide association Study reveals genetic architecture and candidate genes for yield and related traits under terminal drought, combined heat and drought in tropical maize germplasm, . |
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| Genome-wide dissection of the genetic factors underlying food quality in boiled and pounded white Guinea yam, Asfaw, A., Agre, A. P., Matsumoto, R., Olatunji, A. A., Edemodu, A., Olusola, T., Odom-Kolombia, O. L., Adesokan, M., Alamu, E. O., Adebola, P. O., Asiedu, R. and Maziya-Dixon, B., in: Journal of the Science of Food and Agriculture, pages 1-15, ISSN 0022-5142, 2023. [DOI] |
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| Genome-wide diversity and structure variation among lablab [Lablab purpureus (L.) Sweet] accessions and their implication in a Forage breeding program, Sserumaga, J. P.*, Kayondo, S. I., Kigozi, A.*, Kiggundu, A.*, Namazzi, C.*, Walusimbi, K.*, Bugeza, J.*, Molly, A.* and Mugerwa, S.*, in: Genetic Resources and Crop Evolution, pages 1-14, ISSN 0925-9864, 2021. [DOI] |
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| Genome-wide genotyping elucidates the geographical diversification and dispersal of the polyploid and clonally propagated yam (Dioscorea alata L.), Sharif, B. M., Burgarella, C., Cormier, F., Mournet, P., Causse, S., Van, K. N.*, Kaoh, J.*, Rajaonah, M. T.*, Lakshan, S. R.*, Waki, J.*, Bhattacharjee, R., Gueye, B., Pachakkil, B., Arnau, G. and Chair, H., in: Annals of Botany, volume 126, number 6, pages 1029-1038, ISSN 0305-7364, 2020. [DOI] |
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| Genome-wide identification and analysis of Arabidopsis Sodium Proton Antiporter (NHX) and Human Sodium Proton Exchanger (NHE) Homologs in Sorghum bicolor, Kumari, P. H.*, Kumar, S. A.*, Ramesh, K., Reddy, P. S., Nagaraju, M.*, Prakash, A. B., Shah, T., Henderson, A., Srivastava, R. K., Rajasheker, G.*, Chitikineni, A.*, Varshney, R. K., Rathnagiri, P.*, Narasu, M. L.* and Kishor, P. B. K.*, in: Genes, volume 9, pages 1-18, ISSN 2073-4425, 2018. [DOI] |
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| Genome-wide mapping uncovers significant quantitative trait loci associated with yam mosaic virus infection, yield and dry matter content in White Guinea yam (Dioscorea rotundata Poir.), Adjei, E. A.*, Odong, T. L.*, Esuma, W.*, Bhattacharjee, R., Agre, A. P., Adebola, P. O., Chamba, E.*, Asfaw, A., Dramadri, I.*, Mbabazi, S. T.*, Edema, R.*, Ozimati, A.*, Ochwo-Ssemakula, M.* and Alicai, T.*, in: Frontiers in Horticulture, volume 3, number -: 1365567, pages 1-13, ISSN 2813-3595, 2024. [DOI] |
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| Genome-wide transcription and functional analyses reveal heterogeneous molecular mechanisms driving pyrethroids resistance in the major malaria vector Anopheles funestus across Africa, Riveron, J., Ibrahim, S. S., Mulamba, C., Djouaka, R. F., Irving, H., Wondji, M. J., Ishak, I. H. and Wondji, C. S., in: G3-Genes Genomes Genetics, volume 7, number 6, pages 1819-1832, ISSN 2160-1836, 2017. [DOI] |
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| Genomic analysis of selected maize landraces from Sahel and Coastal west Africa reveals their variability and potential for genetic enhancement, Nelimor, C., Badu-Apraku, B., Garcia-Oliveira, A. L.+, Tetteh, A., Agre, A. P., N'guetta, A. S. and Gedil, M., in: Genes, volume 11, number 9: 1054, pages 1-14, ISSN 2073-4425, 2020. [DOI] |
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| Genomic and phenotypic diversity of cultivated and wild tomatoes with varying levels of heat tolerance, Ayenan, M. A.*, Danquah, A.*, Agre, A. P., Hanson, P., Asante, I.* and Danquah, E.*, in: Genes, volume 12, number : 503, pages 1-19, ISSN 2073-4425, 2021. [DOI] |
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| Genomic and proteomic analysis of Schizaphis graminum reveals cyclophilin proteins are involved in the transmission of cereal yellow dwarf virus, Tamborindeguy, C., Bereman, M., DeBlasio, S., Igwe, D., Smith, M., White, F., MacCoss, M., Gray, S. M. and Cilia, M., in: PLOS ONE, volume 8, number 8, pages 1-10, ISSN 1932-6203, 2013. |
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| Genomic distribution of loci exhibiting positive pleiotropic effects on delayed senescence, grain yield and biomass accumulation under drought stress in cowpea, Muchero, W., Ehlers, J. D., Drabo, I.*, Marunaka, S., Cisse, N.*, Diop, N. N., Wanamaker, S., Close, T. J. and Roberts, P. A., Abstract (Oral presentaion) in Program and Book of Abstracts of the 5th World Cowpea Research Conference, held at Palm Beach Hotel, Saly, Senegal. 27 September - 1 October, 2010. |
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| Genomic mating in outbred species: predicting cross usefulness with additive and total genetic covariance matrices, Wolfe, M., Chan, A. W., Kulakow, P., Rabbi, I. Y. and Jannink, J., in: Genetics, volume 219, number 3, pages 1-14, ISSN 0016-6731, 2021. [DOI] |
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| Genomic prediction and quantitative trait locus discovery in a cassava training population constructed from multiple breeding stages, Somo, M., Kulembeka, H.*, Mtunda, K.*, Mrema, E.*, Salum, K.*, Wolfe, M., Rabbi, I. Y., Egesi, C., Kawuki, R.*, Ozimati, A.*, Lozano, R. and Jannink, J., in: Crop Science, volume 60, number 2, pages 896-913, ISSN 0011-183X, 2020. [DOI] |
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| Genomic prediction in a multiploid crop: genotype by environment interaction and allele dosage effects on predictive ability in banana, Nyine, M., Uwimana, B., Blavet, N., Hřibová, E., Vanrespaille, H., Batte, M., Akech, V., Brown, A., Lorenzen, J., Swennen, R. and Doležel, J., in: Plant Genome, volume 11, number 2:170090, pages 1-16, ISSN 1940-3372, 2018. [DOI] |
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| Genomic prediction of the performance of tropical doubled haploid maize mines under artificial Striga hermonthica (Del.) Benth. infestation, Kimutai, J. J. C.*, Makumbi, D.+, Burgueno, J., Perez-Rodriguez, P., Crossa, J., Gowda, M., Menkir, A., Pacheco, A., Ifie, B. E., Tongoona, P.*, Danquah, E.* and Prasanna, B. M., in: G3-Genes Genomes Genetics, volume 14, number 10: jkae186, pages 1-13, ISSN 2160-1836, 2024. [DOI] |
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| Genomic prediction unifies animal and plant breeding programs to form platforms for biological discovery, Hickey, J. M., Chiurugwi, T., Mackay, I., Powell, W., Eggen, A., Kilian, A., Jones, C., Canales, C., Grattapaglia, D.*, Bassi, F., Atlin, G., Gorjanc, G., Dawson, I., Rabbi, I. Y., Ribaut, J., Rutkoski, J., Benzie, J., Lightner, J., Mwacharo, J., Parmentier, J., Robbins, K., Skot, L., Wolfe, M., Rouard, M., Clark, M., Amer, P., Gardiner, P., Hendre, P., Mrode, R., Sivasankar, S., Rasmussen, S., Groh, S., Jackson, V., Thomas, W. and Beyene, Y., in: Nature Genetics, volume 49, number 9, pages 1297-1303, ISSN 1061-4036, 2017. [DOI] |
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| Genomic resources for pigeonpea, Odeny, D., Shah, T. and Saxena, R. K., in: Legume Perspectives, volume 11, pages 33-34, ISSN 2340-1559, 2016. |
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| Genomic resources for water yam (Dioscorea alata L.): analyses of EST sequences, De Novo sequencing and GBS libraries, Saski, C. A., Bhattacharjee, R., Scheffler, B. E. and Asiedu, R., in: PLoS ONE, volume 10, number 7(e0134031), pages 1-14, ISSN 1932-6203, 2015. [DOI] |
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| Genomic selection to accelerate banana breeding: genotyping by sequencing of banana hybrids, Nyine, M., Palacky University Olomouc, 2018. |
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| Genomic sequence derived simple sequence repeat markers: case study with Medicago spp, Mahalakshmi, V., Aparana, P., Ramadevi, S. and Ortiz, R., in: Electronic Journal of Biotechnology, volume 5, number 3, pages 233-242, ISSN 0717-3458, 2002. |
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| Genomic tools in cowpea breeding programs: status and perspectives, Boukar, O., Fatokun, C., Huynh, B., Roberts, P. A. and Close, T. J., in: Frontiers in Plant Science, volume 7, number 757, pages 1-13, ISSN 1664-462X, 2016. [DOI] |
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| Genomic-assisted breeding for abiotic stress tolerance in horticultural crops, Paliwal, R., Singh, G.*, Mir, R. R.* and Gueye, B., pages 91-118, chapter 7, Woodhead Publishing, ISBN 978-0-12-822849-4, 2021. [DOI] |
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| Genomics for transforming yam breeding, Bhattacharjee, R., Gedil, M. and Lopez-Montes, A., in: R4D review, number 8, pages 31-34, ISSN 2071-3681, 2012. |
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| Genomics of the legume pod borer Maruca vitrata Fabricius (Lepidoptera: Crambidae), Margam, V. M.*, Coates, B. S., Agunbiade, T., Sun, W., Ba, M. N., Dabire, C.*, Baoua, I.*, Ishiyaku, M.*, Hellmich, R. L., Covas, F. G., Ramasamy, S., Armstrong, J., Murdock, L. L. and Pittendrigh, B. R., Oral Presentation : 5th World Cowpea conference, 27 September to1 October 2010, Saly, Senegal., 2010. |
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| Genomics of yams, a common source of food and medicine in the tropics, Mignouna, H., Abang, M. and Asiedu, R., pages 549-570, chapter 23, Springer, 2008. |
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| Genomics, genetics and breeding of tropical legumes for better livelihoods of smallholder farmers, Ojiewo, C. O., Monyo, E., Desmae, H., Boukar, O., Mukankusi-Mugisha, C., Thudi, M., Pandey, M. K., Saxena, R. K., Gaur, P. M., Chaturvedi, S.*, Fikre, A., Rao, N. P. V., SameerKumar, C. V., Okori, P., Janila, P., Rubyogo, J. C., Chigeza, G., Akpo, E., Omoigui, L., Nkalubo, S.*, Fenta, B.*, Binagwa, P.*, Kilango, M.*, Williams, M., Mponda, O.*, Okello, D.*, Chichaybelu, M.*, Miningou, A.*, Bationo, J.*, Sako, D.*, Diallo, S.*, Echekwu, C.*, Umar, M. L.*, Frimpong, R. O.*, Mohammed, H.* and Varshney, R. K., in: Plant Breeding, pages 1-13, ISSN 0179-9541, 2018. [DOI] |
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| Genomics-assisted breeding for drought tolerance in cowpea, Chamarthi, S. K., Belko, N., Togola, A., Fatokun, C. and Boukar, O., Sustainable Development and Biodiversity, volume II, pages 187-209, chapter 10, Springer International Publishing, ISBN 978-3-319-99573-1, 2019. [DOI] |
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| Genomics-assisted breeding in the CGIAR Research Program on Roots, Tubers and Bananas (RTB), Friedmann, M., Asfaw, A., Anglin, N. L., Becerra, L. A., Bhattacharjee, R., Brown, A., Carey, E., Ferguson, M., Gemenet, D., Lindqvist-Kreuze, H., Rabbi, I. Y., Rouard, M. and Swennen, R., in: Agriculture, volume 8, number 7, pages 1-24, ISSN 2077-0472, 2018. [DOI] |
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| Genotype by environment (G x E) interaction in cassava (Manihot esculenta Crantz) in Uganda, Ntawuruhunga, P., Whyte, J., Dixon, A.* and Rubaihayo, P.*, in: African Journal of Root and Tuber Crops, volume 7, number 1, pages 1-7, ISSN 1118-2075, 2009. |
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| Genotype by environment cultivar evaluation for cassava brown streak disease resistance in Tanzania, Shirima, R. R., Legg, J., Maeda, D. G.*, Tumwegamire, S., Mkamilo, G., Mtunda, K.*, Kulembeka, H.*, Ndyetabula, I.*, Kimata, B.*, Matondo, D. G.*, Ceasar, G., Mushi, E., Sichalwe, K.* and Kanju, E., in: Virus Research, volume 286, number -: 198017, pages 1-12, ISSN 0168-1702, 2020. [DOI] |
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| Genotype by environment effects on promiscuous nodulation in soybean (Glycine max L. Merrill), Agoyi, E. E.*, Odong, T. L.*, Tumuhairwe, J. B.*, Chigeza, G., Diers, B. W. and Tukamuhabwa, P.*, in: Agriculture & Food Security, volume 6, number 29, pages 1-14, ISSN 2048-7010, 2017. [DOI] |
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| Genotype by environment interaction and grain yield stability of drought tolerant cowpea landraces in Ethiopia, Mekonnen, T. W.*, Mekbib, F.*, Amsalu, B.*, Gedil, M. and Labuschagne, M.*, in: Euphytica, volume 218, number -: 57, pages 1-13, ISSN 0014-2336, 2022. [DOI] |
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| Genotype by environment interaction and phenotypic stability of Musa gemplasm in West and Central Africa, De Cauwer, I., Ortiz, R. and Vuylsteke, D., in: African Crop Science Journal, volume 3, number 4, pages 425-432, ISSN 1021-9730, 1995. |
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| Genotype by environment interaction and productivity of new generation cassava genotypes developed for food and industrial uses in Nigeria, Kulakow, P., Aina, O., Parkes, E., Yomeni, M. O., Onyeka, J.*, Olasanmi, B.*, Iluebbey, P., Agbona, A . and Dixon, A.*, Abstract, P. 225 in the book of abstracts and programme of the 12th Triennial Symposium of International Society for Tropical Root Crops-Africa Branch (ISTRC-AB), 30 - 5, October, Alisa Hotel, Accra, Ghana, 2013. |
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| Genotype by environment interaction effect and fresh root yield stability of cassava genotypes under contrasting nitrogen regimes, Mbe, J. O.*, Dzidzienyo, D.*, Abah, S. P.*, Njoku, D. N., Aghogho, C. I., Onyeka, J., Tongoona, P.* and Egesi, C., in: Scientific Reports, pages 1-17, ISSN 2045-2322, 2024. [DOI] |
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| Genotype by environment interaction effect on beta-carotene of yellow root cassava (Manihot esculenta Crantz) genotypes in Ghana, Maroya, N., Asante, I.* and Dixon, A.*, in: Tropical Roots and Tuber Crops and the Challenges of Globalization and Climate Changes. Proceedings of the 11th triennial Symposium of the ISTRC-AB, 4 to 8 October 2010, pages 212-224, ISTRC-AB, Ibadan, Nigeria, 2012. |
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| Genotype by environment interaction for native cassava(Manihot esculenta Crantz) starch quality and its use in the commercial sector, Benesi, I.*, Labuschagne, M.*, Dixon, A., Viljeon, C. and Mahungu, N., in: Proceedings of the 13th ISTRC-Govt symposium, pages 144-157, Arusha, Tanzania, 2007. |
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| Genotype by environment interaction on resistance to cassava green mite associated traits and effects on yield performance of cassava genotypes in Nigeria, Jiwuba, L.*, Danquah, A.*, Asante, I.*, Blay, E.*, Onyeka, J.*, Danquah, E.* and Egesi, C., in: Frontiers in Plant Science, volume 11, number -: 572200, pages 1-13, ISSN 1664-462X, 2020. [DOI] |
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| Genotype by environment interactions in the regional early maize variety trials in West and Central Africa, Badu-Apraku, B., Abamu, F., Menkir, A., Obeng-Antwi, K.* and The, C.*, in: Maydica, volume 48, pages 93-104, 2003. |
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| Genotype environment interaction studies with cassava, Otoo, J., Dixon, A., Asiedu, R., Okeke, J. E., Maroya, N., Tougnon, K., Okoli, O., Tetteh, J. P. and Hahn, S. K., in: Tropical root crops in a developing economy: proceedings of the 9th Symposium of the International Society for Tropical Root Crops, 10-16 October 1991, Accra, Ghana, pages 146-148, International Society for Tropical Root Crops, 1994. |
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| Genotype stability for total carotenoid concentration in yellow-fleshed cassava, Dixon, A., Ssemakula, G. and Maziya-Dixon, B., in: Root and tuber crops for poverty alleviation through science and technology for sustainable development: proceedings of the 10th symposium of ISTRC-AB held from 8-12 October, 2007 in Maputo, Mozambique, pages 362-363, ISTRC-AB, 2010. |
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| Genotype x environment effects on cassava response to the green mite (Mononychellus tanajoa), Nukenine, E.*, Dixon, A. and Ngeve, J., in: African Journal of Root and Tuber Crops, volume 5, number 1, pages 3-8, ISSN 1118-2075, 2002. |
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| Genotype x environment effects on severity of cassava bacterial blight disease caused by Xanthomonas axonopodis pv. manihotis, Dixon, A., Ngeve, J. and Nukenine, E., in: European Journal of Plant Pathology, volume 108, number 8, pages 763-770, 2002. |
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| Genotype x environment interaction analysis of soybean (Glycine max (L.) Merrill) grain yield across production environments in southern Africa, Mwiinga, B., Sibiya, J.*, Kondwakwenda, A.*, Musvosvi, C.* and Chigeza, G., in: Field Crops Research, volume 256, number -: 107922, pages 1-7, ISSN 0378-4290, 2020. [DOI] |
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| Genotype x environment interaction and optimum resource allocation for yield and yield components of cassava, Nukenine, E. and Dixon, A., in: African Crop Science Journal, volume 8, number 1, pages 1-10, ISSN 1021-9730, 2000. |
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| Genotype X environment interaction and stability analysis in upland rice (Oryza sativa L.) varieties in Ethiopia, Abebe, D.*, Mohammed, W.* and Abebe, A. T., in: Journal of Crop Science and Biotechnology, volume 26, pages 51-62, ISSN 1975-9479, 2023. [DOI] |
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| Genotype x environment interaction and yield stability of soybean (Glycine max l.) genotypes in multi-environment trials (METs) in Nigeria, Abebe, A. T., Adewumi, A. S., Adebayo, M. A.*, Shaahu, A.*, Mushoriwa, H ., Alabi, T. R., Derera, J., Agbona, A . and Chigeza, G., in: Heliyon, volume 10, number -: e38097, pages 1-15, ISSN 2405-8440, 2024. [DOI] |
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| Genotype x environment interaction effects on cassava response to the green mite (Mononychellus tanajoa), Nukenine, E., Ngeve, J. and Dixon, A., in: African Journal of Root and Tuber Crops, volume 5, number 1, pages 3-8, 2003. |
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| Genotype x environment interaction effects on native cassava starch quality and potential for starch use in the commercial sector, Benesi, I.*, Labuschagne, M.*, Dixon, A. and Mahungu, N., in: African Crop Science Journal, volume 12, number 3, pages 205-216, 2004. |
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| Genotype x environment interaction in multilocational testing of Musa germplasm, Pillay, M., Tenkouano, A., Hartman, J., Vuylsteke, D. and Ortiz, R., in: Paper presented at: 6th Biennial Conference of the African Crop Science Society; 12-17 October, Nairobi, Kenya, 2003. |
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| Genotype x environment interaction in water yam (Dioscorea alata) yield trials in five yam-growing sites in Nigeria, Egesi, C. N.*, Ogunyemi, S. and Asiedu, R., in: Journal of Genetics and Breeding, volume 59, pages 81-88, 2005. |
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| Genotype X Environment interaction of carotene content of yellow-fleshed cassava genotypes in Nigeria, Maroya, N., Kulakow, P., Dixon, A.*, Maziya-Dixon, B. and Bakare, M. A., in: Journal of Life Sciences, volume 6, number 6, pages 595-601, ISSN 1934-7391, 2012. |
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| Genotype X Environment interaction of mosaic disease, root yields and total carotene concentration of yellow-fleshed cassava in Nigeria, Maroya, N., Kulakow, P., Dixon, A.* and Maziya-Dixon, B., in: International Journal of Agronomy, volume 2012, number ID 434675, pages 1-8, ISSN 1687-8159, 2012. [DOI] |
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| Genotype x environment interaction studies with cassava, Otoo, J., Dixon, A., Asiedu, R., Okeke, J. E., Maroya, N., Tougnon, K., Okoli, O., Tetteh, J. P. and Hahn, S. K., in: Acta Horticulturae, volume 380, pages 146-148, ISSN 0567-7572, 1994. |
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| Genotype X environment interactions for east African orange-fleshed sweetpotato clones evaluated across varying ecogeographic conditions in Uganda, Tumwegamire, S., Rubaihayo, P.*, Gruneberg, W. J., LaBonte, D. R., Mwanga, R. O. and Kapinga, R ., in: Crop Science, volume 56, pages 1628-1644, ISSN 0011-183X, 2016. [DOI] |
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| Genotype x environment interactions of yield of cowpea (Vigna unguiculata (L.) Walp) inbred lines in the Guinea and Sudan Savanna ecologies of Ghana, Owusu, E.*, Amegbor, I. K.*, Mohammed, H.*, Kusi, F.*, Atopkle, I.*, Sie, E. K.*, Ishahku, M.*, Zakaria, M.*, Iddrisu, S.*, Kendey, H. A.*, Boukar, O., Fatokun, C. and Nutsugah, S. K.*, in: Journal of Crop Science and Biotechnology, pages 1-9, ISSN 1975-9479, 2020. [DOI] |
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| Genotype X environment response of 'Matooke' hybrids (Naritas) to Pseudocercospora fijiensis, the cause of black Sigatoka in banana, Kimunye, J., Jomanga, K., Tazuba, A., Were, E., Viljoen, A.*, Swennen, R. and Mahuku, G., in: Agronomy, volume 11, number 6: 1145, pages 1-16, ISSN 2073-4395, 2021. [DOI] |
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| Genotype X interaction, stability and agronomic performance of carotenoid-rich cassava clones, Ssemakula, G. and Dixon, A., in: Scientific Research and Essay, volume 2, number 9, pages 390-399, 2007. |
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| Genotype-by-environment interaction for native cassava (Manihot esculenta Crantz) starch quality and its use in the commercial sector, Benesi, I.*, Labuschagne, M.*, Viljeon, C., Mahungu, N. and Dixon, A., in: Paper presented at: 13th Symposium of the International Society of Tropical Root Crops (ISTRC); 10-14 November, International Conference Center, Arusha, Tanzania, 2003. |
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| Genotype-by-environment interaction in Musa germplasm revealed by multi-site evaluation in sub-Saharan Africa, Ortiz, R. and Vuylsteke, D., in: HortScience, volume 30, pages 795, 1995. |
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| Genotype-environment interactions for cyanogenic potential in cassava, Bokanga, M., Ekanayake, I. J., Dixon, A. and Porto, M.C.M.*, in: Acta Horticulturae, volume 375, pages 131-140, ISSN 0567-7572, 1994. |
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| Genotype-environment-interaction and stability of root mealiness and other organoleptic properties of boiled cassava roots, Uchendu, U. K.*, Njoku, D.*, Dzidzienyo, D.*, Tongoona, P.*, Offei, S.* and Egesi, C., in: Scientific Reports, volume 12, number -: 20909, pages 1-11, ISSN 2045-2322, 2022. [DOI] |
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| Genotypic and tissue differences in biosynthetic activity for linamarin production in cassava, Chukwumah, Y., Ng, S. Y. C. and Bokanga, M., in: African Journal of Root and Tuber Crops, volume 2, pages 73-76, 1997. |
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| Genotypic differences in concentration and bioavailability of kernel-iron in tropical maize varieties grown under field conditions, Oikeh, S., Menkir, A., Maziya-Dixon, B., Welch, R. and Glahn, R., in: Journal of Plant Nutrition, volume 26, pages 2307-2319, 2003. |
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| Genotypic stability and adaptability: analytical methods and implications for cassava breeding for low-input agriculture, Dixon, A., Asiedu, R. and Hahn, S. K., in: Tropical root crops in a developing economy: proceedings of the 9th Symposium of the International Society for Tropical Root Crops, 20-26 October 1991, Accra, Ghana, pages 130-137, ISTRC; Government of Ghana; Internatinal Institute of Tropical Agriculture (IITA), 1994. |
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| Genotypic variability for cassava tuberous root development in two low-altitude and mid-altitude savanna sites of Nigeria, Akparobi, S.O.*, Ekanayake, I. J. and Togun, A.*, in: African Journal of Root and Tuber Crops, volume 5, number 1, pages 24-28, ISSN 1118-2075, 2002. |
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| Genotypic variability in adaptation responses of selected clones of cassava to drought stress in the Sudan savanna zone of Nigeria, Okogbenin, E.*, Ekanayake, I. J. and Porto, M. C. M., in: Journal of Agronomy and Crop Science, volume 189, pages 376-389, ISSN 0931-2250, 2003. |
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| Genotypic variation for carotenoids content and chemometric model development for seed quality parameters in wheat, Garcia-Oliveira, A. L., Machado, N., Barros, A., Carnide, V. and Lima-Brito, J., in: Procedia Environmental Sciences, volume 29, pages 162-163, ISSN 1878-0296, 2015. [DOI] |
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| Genotypic variation for root pulling resistance in potato and its relationship with yield under water deficit stress, Ekanayake, I. J. and Midmore, D. J., in: Euphytica, volume 61, number 1, pages 43-53, 1992. |
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| Genotypic variation of soybean for phosphorus use efficiency and their contribution of N and P to subsequent maize crops in three ecological zones of West Africa, Abaidoo, R., Sanginga, N., Okogun, J., Kolawole, G., Diels, J . and Tossah, B.*, in: In Demand driven technologies for sustainable maize production in West and Central Africa, pages 194-224, WECAMAN; International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria, 2007. |
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| Oppotunities for biotechnology in cowpea, Monti, L. M., Murdock, L. L. and Thottappilly, G., pages 283-292, chapter 30, International Institute of Tropical Agriculture (IITA); Japan International Research Center for Agricultural Sciences (JIRCAS), 1997. |
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| Optimised DNA capture protocols in the field, extraction and PCR diagnostics for Banana Xanthomonas Wilt and Banana Bunchytop virus using simple DNA capture kits, Ramathani, I., Valentine, N. and Beed, F., Abstract, p. 173 in Book of Abstracts of CIALCA International Conference on "Challenges and Opportunities for Agricultural Intensification of the Humid-Highland Systems of sub-Saharan Africa", Kigali, Rwanda, 24-27 October, 2011. |
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| Optimization of diagnostic RT-PCR protocols and sampling procedures for the reliable and cost-effective detection of Cassava brown streak virus, Abarshi, M. M., Mohammed, I. B., Wasswa, P., Hillocks, R. J., Holt, J., Legg, J., Seal, S. and Maruthi, M. N., in: Journal of Virological Methods, volume 163, pages 353-359, ISSN 0166-0934, 2010. |
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| Optimizing soil fertility management strategies to enhance banana production in volcanic soils of the northern highlands, Tanzania, Meya, A. I., Ndakidemi, P. A.*, Monteiro, J. M.*, Swennen, R. and Merckx, R ., in: Agronomy, volume 10, number 2: 289, pages 1-21, ISSN 2073-4395, 2020. [DOI] |
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| Optimizing use of U.S. Ex-PVP inbred lines for enhancing agronomic performance of tropical Striga resistant maize inbred lines, Sayadi Maazou, A. R., Gedil, M., Adetimirin, V.*, Mengesha Abera, W., Meseka, S. K., Ilesanmi, O. J., Agre, A. P. and Menkir, A., in: BMC Plant Biology, volume 22, number -: 286, pages 1-14, ISSN 1471-2229, 2022. [DOI] |
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| Optimum time for harvesting cassava tubers to reduce losses due to cassava brown streak disease in northeastern DRC, Muhindo, H.*, Wembonyama, F.*, Yengele, O.*, Songbo, M.*, Tata-Hangy, W., Sikirou, M., Pita, J. and Monde, G.*, in: Journal of Agricultural Science, volume 12, number 5, pages 70-81, ISSN 1916-9752, 2020. [DOI] |
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| Out scaling of improved cassava processing technology: Uganda lessons, Okidi, J., Ntawuruhunga, P., Mukama, E., Mutyaba, C.*, Agona, A.*, Oliveira, F.* and Wanda, K., in: Tropical Roots and Tuber Crops and the Challenges of Globalization and Climate Changes. Proceedings of the 11th triennial Symposium of the ISTRC-AB, 4 to 8 October 2010, pages 638-645, ISTRC-AB, Ibadan, Nigeria, 2012. |
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| Ovipositional behaviour of two mango fruit fly species (Diptera Tephritidae) in relation to Oecophylla cues (Hymenoptera Formicidae) as compared to natural conditions without ant cues, Vayssieres, J., Sinzogan, A., Adandonon, A.*, van Mele, P. and Korie, S., in: International Journal of Biological and Chemical Sciences, volume 7, number 2, pages 447-456, ISSN 1991-8631, 2013. |
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| Parasitism of Bemisia tabaci (Homoptera: aleyrodidae) by Eretmocerus mundus (Hymenoptera: aphelinidae) on cassava, Otim, M., Kyalo, G, Kyamanywa, S.*, Asiimwe, P., Legg, J., Guershon, M. and Gerling, D., in: International Journal of Tropical Insect Science, volume 28, number 3, pages 158-167, ISSN 1742-7584, 2008. [DOI] |
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| Parent-offspring regression analysis for total carotenoids and some agronomic traits in cassava, Njoku, D.*, Gracen, V. E.*, Offei, S.*, Asante, I.*, Egesi, C. N.*, Kulakow, P. and Ceballos, H., in: Euphytica, volume 206, pages 657-666, ISSN 0014-2336, 2015. [DOI] |
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| Parsimonious genotype by environment interaction covariance models for cassava (Manihot esculenta), Bakare, M. A., Kayondo, S. I., Aghogho, C. I., Wolfe, M., Parkes, E., Kulakow, P., Egesi, C., Jannink, J. and Rabbi, I. Y., in: Frontiers in Plant Science, volume 13, number -: 978248, pages 1-18, ISSN 1664-462X, 2022. [DOI] |
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| Partenariat de CIALCA pour une dissemination efficace et durable des technologies, Bisimwa, C.*, Antoine, L., Sanginga, J. M., Vanlauwe, B. and Njukwe, E., Abstract, p. 280 in Book of Abstracts of CIALCA International Conference on "Challenges and Opportunities for Agricultural Intensification of the Humid-Highland Systems of sub-Saharan Africa", Kigali, Rwanda, 24-27 October, 2011. |
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| Participation des agriculteurs a la recherche et au developpement; techniques de recensement at de resolution de problemes: Guide de recherche de l'Iita, No. 57, Schulz, S., Guide de recherche de l'Iita, No. 57, International Institute of Tropical Agriculture (IITA), ISBN 978-131-188-6, 2001. |
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| Participation des femmes rurales à l'évaluation des nouvelles variétés de manioc dans la zone forestière du Sud-Cameroun, Fanwoua, J., Tenkouano, A., Wendt, J . and Rueda, J., in: Proceedings, Madid, Spain, 2002. |
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| Participative farmer testing of four low external input technologies, to address soil fertility decline in Mono Province( Benin), Versteeg, M. and Koudokpon *, V., in: Agricultural Systems, volume 42, number 2, pages 265-276, ISSN 0308-521X, 1993. |
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| Participatory appraisal of institutional and political constraints and opportunities for innovation to address parasitic weeds in rice, Schut, M., Rodenburg, J., Klerkx, L., Hinnou, L. C.*, Kayeke, J.* and Bastiaans, L., in: Crop Protection, volume 74, pages 158-170, ISSN 0261-2194, 2015. |
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| Participatory diagnosis for establishing innovation and communication platforms in trans-frontier conservation areas in Zimbabwe: proceeding/poster, Tembani, M.*, Marimira, S.*, Jiri, A.*, Mathe, S., Audouin, S.*, Mukamuri, B.*, Nare, L.* and Triomphe, B., 2017. |
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| Participatory evaluation of improved cowpea cultivars in the Guinea and Sudan savanna zones of north east Nigeria, Kamara, A., Ellis-Jones, J., Ekeleme, F.*, Omoigui, L., Amaza, P., Chikoye, D. and Dugje, I.*, in: Archives of Agronomy and Soil Science, volume 56, number 3, pages 355-370, ISSN 1476-3567, 2010. |
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| Participatory exploration of the heterogeneity in household socioeconomic, food and nutrition security status for the identification of nutrition-sensitive interventions in the Rwandan highlands, Mashingaidze, N., Ekesa, B., Ndayisaba, P. C.*, Njukwe, E., Groot, J. C. J., Gwazane, M.* and Vanlauwe, B., in: Frontiers in Sustainable Food Systems, pages 1-41, ISSN 2571-581X, 2020. [DOI] |
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| Participatory on-farm evaluation of improved legume cereals maize-double cowpea in Northern Guinea Savanna zone of Nigeria, Ajeigbe, H., Singh, B. B., Adeosun, J. O.* and Ezeaku, I., in: African Journal of Agricultural Research, volume 5, number 16, pages 2080-2088, ISSN 1991-637X, 2010. |
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| Participatory research and extension approaches: IITA research guide, No. 71, Ellis-Jones, J., Schultz, L., Chikoye, D., De Haan, N., Kormawa, P. and Adedzwa, D. K., International Institute of Tropical Agriculture (IITA), ISBN 978-131-247-5, 2005. |
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| Participatory variety selection of okra (Abelmoschus esculentus L.) genotyoes for adaptation to the semi-arid agro-ecology of Northern Ghana, Sugri, I.*, Abdulai, M. S.*, Larbi, A., Hoeschle-Zeledon, I., Kusi, F.* and Agyare, R. Y.*, in: African Journal of Plant Science, volume 9, number 12, pages 466-475, ISSN 1996-0824, 2015. [DOI] |
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| Participatory variety selection to enhance adoption of cowpea promising lines in northern of Nigeria, Moukoumbi, Y. D., Ishaya, D. J., Makeri, E., Edematie, V., Belko, N. and Boukar, O., Abstract in the book of abstract p. 63, Pan-African Grain Legume & World Cowpea Conference, 28 February - 4 March, Livingstone, Zambia, 2016. |
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| Partnership in developing postharvest technology for small-scale farmers, Jeon, Y. W., Mado, T. and Halos-Kim, L., in: Partnerships for rural development in sub-Saharan Africa: proceedings of a workshop, Villars-sur-Ollon, Switzerland, 11–15 September 1998, pages 31-42, Center for Applied Studies in International Negotiations, 1999. |
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| Path analysis: a novel approach to determine the contribution of nematode damage to East African highland banana (Musa spp., AAA) yield loss under two crop management practices in Uganda, Ssango, F., Speijer, P., Coyne, D. and De Waele, D., in: Field Crops Research, volume 90, pages 177-187, 2004. |
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| Pathogen-derived resistance using a viral nucleocapsid gene confers only partial non-durable protection in peanut against peanut bud necrosis virus, Rao, S. C.*, Bhatnagar-Mathur, P., Kumar, P. L., Reddy, S. and Sharma, K., in: Archives of Virology, volume 158, number 1, pages 133-143, ISSN 0304-8608, 2013. [DOI] |
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| Pathogenicity and damage potential of five species of plant-parasitic nematodes on plantain (Musa spp., AAB genome) cv. Agbagba, Coyne, D., Omowumi, A., Rotifa, I. and Afolami, S.*, in: Nematology, volume 15, pages 589-599, ISSN 1388-5545, 2013. [DOI] |
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| Pathogenicity of the root-lesion nematode, pratylenchus zeae, on rice genotypes under different hydro-ecologies in Tanzania, Nzogela, Y. B., Landschoot, S., Kihupi, A. L.*, Coyne, D. and Gheysen, G., in: Nematology, volume 22, number 2, pages 221-233, ISSN 1388-5545, 2020. [DOI] |
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| Pathway of nitrous oxide consumption in isolated Pseudomonas stutzeri strains under anoxic and oxic conditions, Desloover, J., Roobroeck, D., Heylen, K., Puig, S., Boeckx, P., Verstraete, W. and Boon, N., in: Environmental Microbiology, pages 1-10, ISSN 1462-2912, 2014. [DOI] |
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| Pathways towards nutritional resilience for smallholder farmers in northern Ghana, Jansen, D., Wageningen University and Research, 2020. |
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| Pattern analysis of sorghum genotype x environment interaction for leaf, panicle, and grain anthracnose in Mali, Hess, D. E.*, Bandyopadhyay, R. and Sissoko, I., in: Plant Disease, volume 86, pages 1374-1382, 2002. |
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| Pattern of stake weight along the stem axis from its base and non emergence of planted stakes, Akoroda, M., Oyadiran, T. F., Yomeni, M. O., Okoro, E. and Dixon, A., in: Repositioning agriculture for sustainable millennium development goals in Nigeria: proceedings of the 40th annual conference of the Agricultural Society of Nigeria held at the National Root Crops Research Institute, Umudike, Abia State, 16-20 October, pages 758-763, Agricultural Society of Nigeria, 2006. |
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| PCR-RFLP of the ribosomal DNA internal transcribed spacers (ITS) provides markers for the A and B genomes in Musa L., Nwakanma, D., Pillay, M., Okoli, B. E. and Tenkouano, A., in: Theoretical and Applied Genetics, volume 108, pages 154-159, 2003. |
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| People's paticipation and gender considerations in technology assessment and transfer, Adekanye, T.O., pages 96-109, 1999. |
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| Perceived effect of feed-health intervention for improved small ruminant production on gender and household nutrition in northern Ghana, Ayantunde, A. A., Salifu, S., Mohammed, S.* and Konlan, S., ILRI, Africa RISING, 2019. |
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| Perceived social norms and agripreneurial intention among youths in eastern DRC, Ephrem, A. N.*, Dontsop-Nguezet, P., Murimbika, M.*, Bamba, Z. and Manyong, V., in: Sustainability, volume 13, number 6: 3442, pages 1-21, ISSN 2071-1050, 2021. [DOI] |
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| Perception of communities when managing exclosures as common pool resources in northwestern Ethiopia, Mekuria, W., Getnet, K., Yami, M., Langan, S. and Amare, D.*, in: Land Degradation and Development, pages 1-14, ISSN 1085-3278, 2020. [DOI] |
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| Performance and growth prospects of Irish potatoes as a component for the development of strategic exports in Uganda: ASARECA monograph, No. 2, Ferris, R. S. B., Okobio, G., Crissman, C., Ewell, P. and Lemaga, B., ASARECA monograph, No. 2, International Institute of Tropical Agriculture (IITA), ISBN 978-131-210-6, 2003. |
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| Performance evaluation of developed cooking steamer for optimum retention of carotenoid in Attieke produced from biofortified cassava (Manihot esculenta, crantz): poster, Sangodoyin, O. M.*, Alamu, E. O., Diallo, T. A., Kolawole, P., Abass, A., Maziya-Dixon, B., Kulakow, P., Parkes, E., Adesokan, M., Jekayinfa, S. O.* and Olajide, J. O.*, International Institute of Tropical Agriculture, 2019. |
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| Performance in three agroecologies of virus-tested cassava genotypes derived from meristem culture, Akano, A. O., Ng, S. Y. C., Asiedu, R. and Atiri, G.*, in: Root crops and poverty alleviation: proceedings of the Sixth Triennial Symposium of the International Society for Tropical Root Crops�Africa Branch, 22�28 October 1995, Lilongwe, Malawi, 1998. |
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| Performance of 23 yellow root cassava genotypes in five major agro ecological zones in Nigeria: proceeding (poster), Iluebbey, P., Agbona, A ., Bello, A. A., Parkes, E., Aina, O. and Kulakow, P., World Congress on Root and Tuber Crops (WCRTC), 2016. |
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| Performance of a maize/cassava intercrop in tilled and no-till Senna spectabilis alley cropping on an Ultisol in southern Cameroon, Hauser, S., Ndi, J. and Hulugalle, N., in: Agroforestry Systems, volume 49, pages 177-188, ISSN 0167-4366, 2000. |
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| Performance of cassava genotypes at low, mid and highland altitude in Uganda, Ntawuruhunga, P., Rubaihayo, P.* and Osiru, D.*, pages 410-416, Government of Benin, 2001. |
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| Performance of cassava planting materials produced using the "Semi Autotrophic Hydroponic" technology in the laboratory and across locations in the Democratic Republic of Congo, Mamy, B. M.*, Jomo Kenyatta University of Agriculture and Technology, 2024. |
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| Performance of determinate and indeterminate Soybean genotypes in Mozambique, Boahen, S., Chikoye, D., Tefera, H. and Abaidoo, R., Abstract, p. 88 in the Proceedings of the 10th African Crop Science Society Conference,"from soil to soul- crop production for improved African livelihoods and better environment for future generations", held in Maputo, Mozambique. 10-13 October, 2011. |
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| Performance of diverse maize genotypes under nitrogen deficiency stress in the northern Guinea Savanna of Nigeria, Kamara, A., Menkir, A., Ajala, S. and Kureh, I.*, in: Experimental Agriculture, volume 41, number 2, pages 199-212, 2005. |
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| Performance of elite maize genotypes under selected sustainable intensification options in Kenya, Rusinamhodzi, L ., Makumbi, D.+, Njeru, M. J. and Kanampiu, F., in: Field Crops Research, volume 249, number -: 107738, pages 1-9, ISSN 0378-4290, 2020. [DOI] |
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| Performance of groundnut genotypes under millet based intercropping systems in Sudan Savanna of Nigeria, Aliyu, K. T., Ajeigbe, H. A.+ and Mohammed, I. B., in: International Journal of Advanced and Innovative Research, volume 5, number 6, pages 126-132, ISSN 2278-7844, 2016. |
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| Performance of IITA-developed cassava postharvest technologies, Jeon, Y. W. and Halos, L. S., 1991. |
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| Performance of improved cassava genotypes for early bulking, disease resistance, and culinary qualities in an inland valley ecosystem, Okechukwu, R. and Dixon, A.*, in: Agronomy Journal, volume 101, number 5, pages 1258-1265, ISSN 0002-1962, 2009. |
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| Performance of selected yellow cassava genotypes for total carotenoid content and yield components in an advance yield trial in 3 environments in Nigeria: poster, Akpotuzor, P. A., Ogwuche, T. O., Aina, O., Olasupo, K. T., Ogungbesan, A. O., Fashoranti, E., Agbona, A ., Parkes, E. and Kulakow, P., Global Cassava Partnership for the 21st Century - GCP21, 2018. |
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| Performance of semi-determinate and indeterminate cowpeas relay-cropped into maize in Northeast Nigeria, Kamara, A., Omoigui, L.*, Ewansiha, S. U., Ekeleme, F.*, Chikoye, D. and Ajeigbe, H., in: African Journal of Agricultural Research, volume 6, number 7, pages 1763-1770, ISSN 1991-637X, 2011. |
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| Performance of soybean (Glycine max L Merrill) genotypes under different planting dates in Sennar State of the Sudan, Ngalamu, T.*, Meseka, S. K. and Ashraf, M.*, in: Journal of Applied Biosciences, volume 49, pages 3363-3370, ISSN 1997-5902, 2012. |
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| Performance-based grouping of adapted and exotic drought-tolerant maize (Zea mays L) inbred lines under stressed and nonstressed conditions, Adebayo, A., Menkir, A., Blay, E.*, Gracen, V. E.* and Danquah, E.*, in: Maydica, volume 59, pages 115-123, ISSN 0025-6153, 2014. |
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| Performances de transfert des paquets technologiques en milieu rural: cas des ongs locales, Manirakiza, D.*, Hatungimana, H.* and Njukwe, E., Cahier du curdes No. 16, pages 253-284, Centre Universitaire de Recherche pour le Developpement Economique et Social, 2016. |
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| Performances of plantlets from selected cassava (Manihot esculenta Crantz) genotypes under Semi - Autotrophic Hydroponics (SAH) using different substrates, Mamy, B. M., Kintche, K., Sikirou, M., Adetoro, N. A., Angelique, K. and Nyende, A. B.*, in: Journal of Agriculture Science & Technology, volume 22, number 6, pages 66-89, ISSN 1561-7645, 2024. [DOI] |
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| Persistence and effectiveness of rhizobia nodulating promiscuous soybeans in moist savanna zones of Nigeria, Sanginga, N., Abaidoo, R., Dashiell, K., Carsky, R. and Okogun, J., in: Applied Soil Ecology, volume 3, pages 215-224, ISSN 0929-1393, 1996. |
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| Persistence and recovery of introduced Rhizobium ten years after inoculation on Leucaena leucocephala grown on an Alfisol in southwetern Nigeria, Sanginga, N., Danso, S. K. A.*, Mulongoy, K. and Ojeifo, A. A., in: Plant and Soil, volume 159, pages 199-204, 1994. |
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| Perspectives on the application of biotechnology to assist the genetic enhancement of plantain and banana (Musa spp.), Crouch, J. H., Vuylsteke, D. and Ortiz, R., in: Electronic Journal of Biotechnology, volume 1, number 1, pages 11-22, ISSN 0717-3458, 1998. |
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| Pests and diseases status of local and improved cassava genotypes in selected pilot sites in Cameroon, Tindo, M.*, Njukwe, E. and Tenkouano, A.+, Abstract, P. 285 in the book of abstracts and programme of the 12th Triennial Symposium of International Society for Tropical Root Crops-Africa Branch (ISTRC-AB), 30 - 5, October, Alisa Hotel, Accra, Ghana, 2013. |
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| Phenalenone-type phytoalexins mediate resistance of banana plants (Musa spp.) to the burrowing nematode Radopholus similis, Holscher, D., Dhakshinamoorthy, S., Alexandrov, T., Becker, M., Bretschneider, T., Buerkert, A., Crecelius, A. C., De Waele, D.*, Elsen, A., Heckel, D. G., Heklau, H., Hertweck, C., Kai, M., Knop, K., Krafft, C., Maddula, R. K., Matthaus, C., Popp, J., Schneider, B., Schubert, U. S., Sikora, R., Svatos, A. and Swennen, R., in: Proceedings of the National Academy of Sciences of the United States of America (PNAS), volume 111, number 1, pages 105-110, ISSN 0027-8424, 2014. [DOI] |
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| Phenological development of East African highland banana involves trade-offs between physiological age and chronological age, Taulya, G., Van Asten, P., Leffelaar, P. A. and Giller, K., in: European Journal of Agronomy, volume 60, pages 41-53, ISSN 1161-0301, 2014. [DOI] |
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| Phenotypic analysis of tuber yield- and maturity-related traits in white yam (Dioscorea rotundata), Sartie, A. M., Franco, J. and Asiedu, R., in: African Journal of Biotechnology, volume 11, number 17, pages 3964-3975, ISSN 1684-5315, 2012. [DOI] |
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| Phenotypic and genetic correlations in Musa populations in Nigeria, Tenkouano, A., Ortiz, R. and Baiyeri, K., in: African Crop Science Journal, volume 10, number 2, pages 121-132, ISSN 1021-9730, 2002. |
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| Phenotypic and molecular assessment of genetic structure and diversity in a panel of winged yam (Dioscorea alata) clones and cultivars, Agre, A. P., Asibe, F., Darkwa, K., Edemodu, A., Bauchet, G. J., Asiedu, R., Adebola, P. O. and Asfaw, A., in: Scientific Reports, volume 9, number -: 18221, pages 1-11, ISSN 2045-2322, 2019. [DOI] |
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| Phenotypic approaches to drought in cassava: review, Okogbenin, E.*, Setter, T.*, Ferguson, M., Mutegi, R., Ceballos, H., Olasanmi, B.* and Fregene, M.*, in: Frontiers in Physiology, volume 4, number 93, pages 1-15, ISSN 1664-042X, 2013. [DOI] |
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| Phenotypic characterization and validation of provitamin A functional genes in early maturing provitamin A-quality protein maize (Zea mays) inbred lines, Obeng-Bio, E., Badu-Apraku, B., Ifie, B. E.*, Danquah, A.*, Blay, E.* and Dadzie, A. M.*, in: Plant Breeding, pages 1-14, ISSN 0179-9541, 2019. [DOI] |
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| Phenotypic characterization of Amaro coffee (Coffea arabica L.) local accessions using multi-variate techniques at Awada, southern Ethiopia, Alemayehu, D.*, Garedew, W.* and Abebe, A. T., in: Plant Genetic Resources: Characterization and Utilization, volume 20, number 1, pages 46-54, ISSN 1479-2621, 2022. [DOI] |
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| Phenotypic characterization of maize landraces from Sahel and Coastal west Africa reveals marked diversity and potential for genetic improvement, Nelimor, C., Badu-Apraku, B., N'guetta, A. S., Tetteh, A. Y.* and Garcia-Oliveira, A. L., in: Journal of Crop Improvement, pages 1-17, ISSN 1542-7528, 2019. [DOI] |
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| Phenotypic diversity and pattern of variation in West African plantains (Musa spp. AAB group), Swennen, R.+, Vuylsteke, D. and Ortiz, R., in: Economic Botany, volume 49, pages 320-327, 1995. |
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| Phenotypic diversity for morphological and productivity traits in chickpea core collection, Upadhyaya, H., Ortiz, R., Bramel, P. and Singh, S., in: Euphytica, volume 123, pages 333-342, 2002. |
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| Phenotypic diversity in maize landraces in Ghana, Obeng-Antwi, K.*, Craufurd, P., Menkir, A., Ellis, R. and Sallah, P., in: International Journal of Science and Advanced Technology, volume 2, number 5, pages 39-70, ISSN 2221-8386, 2012. |
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| Phenotypic diversity within Ugandan yam (Dioscorea species) germplasm collection, Adjei, E. A.*, Esuma, E.*, Alicai, T.*, Bhattacharjee, R., Dramadri, I.*, Agaba, R.*, Chamba, E.* and Odong, T. L.*, in: International Journal of Agronomy, volume 2022, number -: 5826012, pages 1-10, ISSN 1687-8159, 2022. [DOI] |
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| Phenotypic evaluation of a multi-location cassava breeding trial to improve a genomic selection training population, Uchendu, U. K., Parkes, E., Aina, O., Akoroda, M. O.* and Kulakow, P., in: Competitiveness of Root Crops for Accelerating Africa's Economic Growth, 12th Triennial Symposium of International Society for Tropical Root Crops-Africa Branch (ISTRC-AB), 30 Sept-5 October, 2013, Alisa Hotel, Accra, Ghana, pages 1-11, 2013. |
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| Phenotypic relationships among growth, yield and black leaf streak disease responses of Musa genotypes, Baiyeri, K., Pillay, M. and Tenkouano, A., in: Journal of Crop Improvement, volume 21, number 1, pages 41-54, ISSN 1542-7528, 2008. |
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| Phenotypic variability for root traits in andean common beans grown with and without aluminum stress conditions, Ambachew, D., Asfaw, A. and Blair, M. W., in: Agronomy, volume 13, number 3: 619, pages 1-13, ISSN 2073-4395, 2023. [DOI] |
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| Phenotypic variation among in-vitro propagated plantain (Musa sp. cultivar AAB), Vuylsteke, D., Swennen, R., Wilson, G. F. and De Langhe, E., in: Scientia Horticulturae, volume 36, pages 79-88, 1988. |
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| Phenotypic variation among IR64 x TOG5681 rice (Oryza sativa x O. glaberrima) chromosome segment substitution lines (CSSL) in response to iron toxicity, and its associated QTLs, Sikirou, M., Drame, K. N., Saito, K., Bocco, R. and Lorieux, M., in: Euphytica, volume 221, number -: 16, pages 1-11, ISSN 0014-2336, 2025. [DOI] |
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| Phenotypic, host range and symbiotic characteristics of indigenous soybean nodulating rhizobia from Ethiopian soils, Abera, Y.*, Masso, C. and Assefa, F.*, in: Ethiopian Journal of Agricultural Sciences, volume 28, number 3, pages 95-116, ISSN 2415-2382, 2018. |
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| Phenotyping cassava for adaptation to drought, Okogbenin, E.*, Setter, T.*, Ferguson, M., Mutegi, R., Alves, A., Ceballos, H. and Fregene, M.*, pages 395-410, chapter 11.3.1, CGIAR Generational Challenge Programme, ISBN 978-970-648-178-8, 2011. |
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| Phenotyping cowpea for seedling root architecture reveals root phenes important for breeding phosphorus efficient varieties, Mohammed, S. B.*, Burridge, J. D., Ishiyaku, M. F.*, Boukar, O. and Lynch, J. P., in: Crop Science, pages 1-20, ISSN 0011-183X, 2021. [DOI] |
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| Phenotyping for adaptation to drought and low-phosphorus soils in cowpea (Vigna unguiculata (L.) Walp.): proceedings/poster, Belko, N., Boukar, O., Fatokun, C. and Vadez, V., 2015. |
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| Phenotyping tropical legume crops for adaptation to drought and low-P soils, Belko, N., Boukar, O., Fatokun, C. and Vadez, V., Abstract, 2015. |
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| Phosphate rock fertilization in tilled and no-till low-input systems in the humid tropics, Gichuru, M. and Sanchez, P., in: Agronomy Journal, volume 80, pages 943-947, ISSN 0002-1962, 1988. |
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| Phosphorus effects on growth and yield of groundnut varieties in the tropical savannas of northeast Nigeria, Kamara, A., Ekeleme, F.*, Kwari, J.*, Omoigui, L.* and Chikoye, D., in: Journal of Tropical Agriculture, volume 49, number 1 and 2, pages 25-30, ISSN 0971-636X, 2011. |
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| Phosphorus requirement and nodulation of herbaceous and shrub legumes in low P soils of a Guinean Savanna in Nigeria, Sanginga, N., Okogun, J., Akobundu, I. and Kang, B., in: Applied Soil Ecology, volume 3, number 3, pages 247-255, ISSN 0929-1393, 1996. |
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| Phosphorus response efficiency in cowpea genotypes, Olaleye, O.*, Fagbola, O.*, Abaidoo, R. and Ikeorah, N.*, in: Journal of Agricultural Science, volume 4, number 1, pages 81-90, ISSN 1916-9752, 2012. [DOI] |
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| Photosynthetic photochemical response of cassava Manihot esculenta Crantz to water stress and mycorrhizal inoculation [abstract], Oyetunji, O.*, Ekanayake, I. J. and Osonubi, O.*, in: Tropical Agriculture (Trinidad), volume 75, pages 328-329, 1998. |
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| Phylogeny of Epilachna, Henosepilachna, and some minor genera of phytophagous ladybird beetles (Coleoptera: Coccinellidae: Coccinellinae: Epilachnini), with an analysis of ancestral biogeography and host-plant utilization, Katoh, T., Koji, S., Ishida, A., Matsubayashi, K. W., Kahono, S.*, Kobayashi, N., Furukawa, K., Viet, B. T.*, Vasconcellos-Neto, J.*, Lange, C. N.*, Goergen, G ., Nakano, S., Li, N.*, Yu, G.* and Katakura, H., in: Zoological Science, volume 31, pages 820-830, ISSN 0289-0003, 2014. |
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| Physical quality of maize grain harvested and stored by smallholder farmers in the Northern highlands of Tanzania: effects of harvesting and pre-storage handling practices in two marginally contrasting agro-locations, Mutungi, C., Muthoni, F. K., Bekunda, M., Gaspar, A., Kabula, E. and Abass, A., in: Journal of Stored Products Research, volume 84, pages 1-12, ISSN 0022-474X, 2019. [DOI] |
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| Physico-chemical characterization of Anopheles gambiae s.l. breeding sites and kdr mutations in urban areas of Cotonou and Natitingou, Benin, Djegbe, I., Hessou-Djossou, D.*, Boukari, M. Y. G.*, Nonfodji, O.*, Tchigossou, G ., Djouaka, R. F., Cornelie, S., Akogbeto, M.*, Djogbenou, S. L.* and Chandre, F., in: BMC Infectious Diseases, volume 24, number -: 545, pages 1-12, ISSN 1471-2334, 2024. [DOI] |
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| Physicochemical parameters and functional properties of flours from advanced genotypes and improved cassava varieties for industrial applications, Chimphepo, L.*, Alamu, E. O., Monjerezi, M.*, Ntawuruhunga, P. and Saka, J. D. K.*, in: Food Science and Technology, volume 147, number -: 111592, pages 1-9, ISSN 0023-6438, 2021. [DOI] |
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| Physicochemical parameters and functional properties of flours from advanced genotypes and improved cassava varieties for industrial applications, Chimphepo, L.*, University of Malawi, 2021. |
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| Physicochemical properties and total carotenoid content of high-quality unripe plantain flour from varieties of hybrid plantain cultivars, Anajekwu, E. O., Maziya-Dixon, B., Akinoso, R.*, Awoyale, W. and Alamu, E. O., in: Journal of Chemistry, number -: 5960346, pages 1-7, ISSN 2090-9063, 2020. [DOI] |
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| Physiological deterioration response of cassava roots associated with wounding and its genotypic variability, Ekanayake, I. J. and Lyasse, O., 1999. |
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| Physiological evaluation of soybean (Glycine max (L.) Merr.) varieties as influenced by inoculation and sowing date in the Guinea Savanna, Aminu, A. S.*, Ahmadu Bello University, 2019. |
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| Physiological factors in drought tolerance of various Musa genotype, Ekanayake, I. J., Ortiz, R. and Vuylsteke, D., in: IITA Research, volume 11, pages 7-10, ISSN 1115-3067, 1995. |
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| Production de semences de mais hybride: Guide de recherche de l'Iita, No. 59, Kim, S. K., Kling, J. and Weber, G., Guide de recherche de l'Iita, No. 59, International Institute of Tropical Agriculture (IITA), ISBN 978-131-189-4, 2001. |
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| Production des ignames; role actuel et perspectives: Guide de recherche de l'Iita, No. 46 d'avenir, Hahn, S. K., Osiru, D., Akoroda, M. and Otoo, J., Guide de recherche de l'Iita, No. 46, International Institute of Tropical Agriculture (IITA), 1994. |
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| Production et valorisation des larves de mouche soldat noire, Hermetia illucens (Diptera : Stratiomydae), Dzepe, T .D. R.*, Dschang University, 2021. |
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| Production of conidia by Peronosclerospora sorghi on sorghum crops in Zimbabwe, Bock, C., Jeger, M. J., Mughogho, L., Mitsi, E. and Cardwell, K., in: Plant Pathology, volume 47, number 3, pages 243-251, ISSN 0032-0862, 1998. |
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| Production of monoclonal antibodies against cowpea mottle viruses, Akinbade, S., Mgbechi-Ezeri, J., Oben, T. and Kumar, P. L., pages 187, 2007. |
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| Production of the first transgenic cassava in Africa via direct shoot organogenesis from friable embryogenic calli and germination of maturing somatic embryos, Hankoua, B., Taylor, N., Ng, S. Y. C., Fawole, I., Puonti-Kaerlas, J., Padmanabhan, C., Yadav, J. S., Fauquet, C., Dixon, A. and Fondong, V. N., in: African Journal of Biotechnology, volume 5, number 19, pages 1700-1712, ISSN 1684-5315, 2006. |
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| Production of yams: present role and future prospects: IITA research guide, No. 46, Hahn, S. K., Osiru, D., Akoroda, M. and Otoo, J., IITA research guide, No. 46, International Institute of Tropical Agriculture (IITA), 1995. |
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| Production prospects for cassava in Tanzania: COSCA working paper, No. 16, Nweke, F., Kapinga, R., Dixon, A., Ugwu, B., Ajobo, O. and Asadu, C.*, COSCA working paper, International Institute of Tropical Agriculture (IITA), ISBN 978-131-152-5, 1998. |
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| Production prospects for cassava in Uganda: COSCA working paper, No. 17, Nweke, F., Otim-Nape, W., Dixon, A., Asadu, C.*, Bua, A.*, Ajobo, O., Ugwu, B., Baguma, Y.* and Masembe-Kajubi, H., COSCA working paper, International Institute of Tropical Agriculture (IITA), ISBN 978-131-153-3, 1999. |
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| Production, proximate composition and utilization of some minor root and tuber crops in Nigeria, Olojede, A. O.*, Akinpelu, A. O.*, Dalyop, T. Y.*, Lenka, D.*, Iluebbey, P., Dixon, A. and Nwosu, K. I. *, Abstract (Poster) in Book of Abstracts of the 11th Triennial Symposium of ISTRC-AB, held at Memling Hotel, Kinshasa. 4-8 October, 2010. |
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| Productivity and field disease reaction of biofortified cassava genotypes in Nigeria, Bello, A. A., Parkes, E., Aina, O., Maroya, N., Kolawole, R.*, Akoroda, M. O.* and Kulakow, P., Abstract, P. 132 in the book of abstracts and programme of the 12th Triennial Symposium of International Society for Tropical Root Crops-Africa Branch (ISTRC-AB), 30 - 5, October, Alisa Hotel, Accra, Ghana, 2013. |
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| Productivity of cowpea genotype under maize intercropping system in the northern and southern Guinea Savanna of Nigeria, Bukar, M. A.*, Bayero University,, 2020. |
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| Profitability and technical efficiency of soybean production in northern Nigeria, Ugbabe, O. O.*, Abdoulaye, T., Kamara, A., Mbaval, J. and Oyinbo, O.*, in: Tropicultura, volume 35, number 3, pages 203-214, ISSN 0771-3312, 2017. |
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| Profitability of intensification technologies among smallholder maize farmers in the forest-savanna transition zone of Nigeria, Bamire, A. S.* and Manyong, V., in: Agriculture, Ecosystems and Environment, volume 100, number 2-3, pages 111-118, ISSN 0167-8809, 2003. |
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| Progress in breeding for low nitrogen stress in the northern Guinea savanna, Alabi, S.*, Kling, J., Ado, S., Iyobisere, E., Ajala, S., Showemimo, F. and Tarfa, B.*, in: Abstracts opf the Fourth Biennial West and Central Africa Regional Maize Workshop, 14-18 May, pages 17, Cotonou, Benin Republic, 2001. |
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| Progress in screening cassava genotypes for resistance to cassava brown streak Uganda virus, Kanju, E., Ntawuruhunga, P. and Otim Okello, F., Abstract (Oral presentation) in Book of Abstracts of the 11th Triennial Symposium of ISTRC-AB, held at Memling Hotel, Kinshasa. 4-8 October, 2010. |
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| Progress in screening cassava genotypes for resistance to cassava brown streak Uganda virus, Kanju, E., Ntawuruhunga, P. and Otim Okello, F., in: Tropical Roots and Tuber Crops and the Challenges of Globalization and Climate Changes. Proceedings of the 11th triennial Symposium of the ISTRC-AB, 4 to 8 October 2010, pages 125-129, ISTRC-AB, Ibadan, Nigeria, 2012. |
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| Progress in the diagnosis and epidemiological characterisation of cassava mosaic geminiviruses in East Africa, Legg, J. and Okao-Okuja, G., in: Abstracts of the VIIth International Plant Virus Epidemiology Symposium, Aguadulce (Almeria), Spain, 11-16 April 1999, pages 74-75, 1999. |
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| Progress in yam genome sequencing and its potential applications, Tamiru, M., Natsume, S., Mitsuoka, C., Takagi, H., Babil, P. K., Gedil, M., Lopez-Montes, A., Asiedu, R. and Terauchi, R., Abstract, P. 38 in the Book of Abstracts, 16th Triennial Symposium of the International Society for Tropical Root Crops (ISTRC), 23 - 28th September, 2012. |
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| Progress on the genome characterisation of D. alata, White, B. H., Bhattacharjee, R., Verweij, W., Lopez-Montes, A., Kumar, P. L., Kamoun, S. and Corpas, M., Abstract, p. w901 in the book of abstracts of the Plant and Animal Genome XXIV Conference January 08 - 13, San Diego, CA, 2016. |
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| Project C: supporting innovation processes (SINPRO) (assessing impact, formulating policy options, and systems analysis project), IITA, , 2003. |
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| Project C: supporting innovation processes (SINPRO) (assessing impact, formulating policy options, and systems analysis project), IITA, , 2003. |
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| Project description: Yam Improvement for Income and Food Security in West Africa; YIIFSWA working paper series No. 1, Maroya, N., Asiedu, R., Kumar, P. L., Lopez-Montes, A., Orchard, J. and Ndiame, F.*, YIIFSWA working paper series, 2014. |
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| Project SAVE (Soybean Asian Variety Evaluation) - potential new sources of yield genes with no strings from USB, public, and private cooperative research, Carter, T., Nelson, R., Cregan, P., Boerma, H., Manjarrez-Sandoval, P., Zhou, X., Kenworthy, W. and Ude, G., in: Proceedings of the Twenty eighth Soybean seed research conference, 1998. Washington, DC., USA, pages 68-83, American Seed Trade Association, 2000. |
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| Promoting maize technology transfer in West and Central Africa: a networking approach, Badu-Apraku, B., Fakorede, M. and Ajala, S., in: Maize revolution in West and Central Africa, pages 45-85, International Institute of Tropical Agriculture (IITA), WECAMAN, Ibadan, Nigeria, 2003. |
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| Promoting market-led agricultural technology tranfer and commercialization in Nigeria: proceedings of a National Stakeholders workshop and launching of Rural Sector Enhancement Program (RUSEP), International Institute of Tropical Agriculture (IITA), 2003. |
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| Promoting the adoption of innovations through participatory approaches: example from northern Nigeria, Abdoulaye, T., Amaza, P.*, Olanrewaju, A. and Ellis-Jones, J., in: Tropicultura, volume 30, number 3, pages 155-160, ISSN 0771-3312, 2012. |
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| Promotion of cassava in the semiarid zones of sub-Saharan Africa: status of cassava in northern Nigeria: paper presented at the 7th Triennial symposium of the International society for Tropical Root Crops - Africa Branch, IITA, Ibadan, Nigeria, Oct. 1998, Amans, E. B., Tshiunza, M., Ahmed, B.*, Dixon, A., Mud, M. and Bokanga, M., pages 35-42, International Institute of Tropical Agriculture (IITA), 2001. |
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| Promotion of technologies for the integrated management of plantain to improve farm productivity: final report, Fotso Kuate, A., Ngatat, S., Lienou, J., Membang, G., Assiedu, E. and Hanna, R., 2014. |
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| Prospects and determinants of adoption of IITA plantain and banana based technologies in three Niger Delta States of Nigeria, Faturoti, B., Emah, G.*, Isife, B.*, Tenkouano, A. and Lemchi, J., in: African Journal of Biotechnology, volume 5, number 14, pages 1319-1323, ISSN 1684-5315, 2006. |
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| Prospects and potential of Bradyrhizobium diazoefficiens based bio-inoculants on soybean production in different agro-ecologies of Mozambique, Engoke, C., Wiredu, A., Chikoye, D. and Boahen, S., in: Frontiers in Sustainable Food Systems, volume 6, number : 908231, pages 1-16, ISSN 2571-581X, 2022. [DOI] |
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| Prospects for breeding agronomically superior Musa with resistance or tolerance to BSV, Tenkouano, A., Dahal, G., Hughes, J. and Pillay, M., in: Plant Virology in sub-Saharan Africa: proceedings of a conference organized by IITA, 4-8 June 2001., International Institute of Tropical Agriculture (IITA), 2003. |
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| Prospects for genomic selection in cassava breeding, Wolfe, M., Del Carpio, D. P., Alabi, O., Ezenwaka, L.*, Ikeogu, U. N., Kayondo, I. S.*, Lozano, R., Okeke, U. G., Ozimati, A.*, Ezuma, W.*, Egesi, C., Kawuki, R. S.*, Kulakow, P., Rabbi, I. Y. and Jannink, J., in: Plant Genome, volume 10, number 3, pages 1-19, ISSN 1940-3372, 2017. [DOI] |
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| Prospects of biotechnology in Musa improvement of IITA, Crouch, J. H., in: Plantain and banana production and research in West Africa and Central Africa: proceedings, Regional Workshop, Onne, Nigeria, 23-28 Sep 1995, pages 22-31, 1996. |
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| Proteo-trancriptomic analyses reveal a large expansion of metalloprotease-like proteins in atypical venom vesicles of the wasp Meteorus pulchricornis (Braconidae), Gatti, J. L., Belghazi, M., Legeai, F., Ravallec, M., Frayssinet, M., Robin, S., Aboubakar-Souna, D., Srinivasan, R., Tamo, M., Poirie, M. and Volkoff, A. N., in: Toxins, volume 13, number 7: 502, pages 1-36, ISSN 2072-6651, 2021. [DOI] |
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| Protocol for nematode resistance screening: root knot nematodes, Meloidogyne spp., Coyne, D. and Ross, J. L., Booklet, 2014. |
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| Public-Private Partnerships for sustainable supply of legume inputs in northern Ghana: proceeding (poster), Adjei-Nsiah, S., Doe, E., Baars, E., Ampadu-Boakye, T. and Kanampiu, F., 2016. |
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| Pupae transplantation to boost early colony growth in the weaver ant Oecophylla longinoda Latreille (Hymenoptera: Formicidae), Ouagoussounon, I.*, Sinzogan, A.*, Offenberg, J., Adandonon, A.*, Vayssieres, J. and Kossou, D.*, in: Sociobiology, volume 60, number 4, pages 374-379, ISSN 0361-6525, 2013. [DOI] |
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| Purdue improved cowpea storage (PICS) technology, Baributsa, D., Baoua, I.*, Lowenberg-DeBoer, J., Abdoulaye, T. and Murdock, L. L., Purdue University, Department of Entomology, 2012. |
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| PYrenophora tritici-repentis as a component of the fungal flora of winter wheat seed in New York, Schilder, A. M. C. and Bergstrom, G. C., in: Seed Science and Technology, volume 22, pages 285-297, ISSN 0251-0952, 1994. |
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| QTL mapping of agronomic traits in tef [Eragrostis tef (Zucc) Trotter], Yu, J., Graznak, E., Breseghello, F., Tefera, H. and Sorrells, M. E., in: BMC Plant Biology, volume 7, number 30, 2007. [DOI] |
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| Quantifying the prevalence of (non)-response to fertilizers in sub-Saharan Africa using on-farm trial data, Nziguheba, G., van Heerwaarden, J. and Vanlauwe, B., in: Nutrient Cycling in Agroecosystems, pages 1-13, ISSN 1385-1314, 2021. [DOI] |
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| Quantitation of multiple mycotoxins and cyanogenic glucosides in cassava samples from Tanzania and Rwanda by an LC-MS/MS-based multi-toxin method, Sulyok, M., Beed, F., Boni, S., Abass, A., Mukunzi, A.* and Krska, R., in: Food Additives and Contaminants: Part A, pages 1-16, ISSN 1944-0049, 2014. [DOI] |
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| Quantitative assessment of trace and macro element compositions of cassava (Manihot esculenta) storage roots enriched with B-Carotene as influenced by genotypes and growing locations, Alamu, E. O., Maziya-Dixon, B. and Dixon, A., in: Agriculture, volume 10, number 12: 613, pages 1-14, ISSN 2077-0472, 2020. [DOI] |
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| Quantitative assessment of traditional cropping systems in the Sudan savanna of northern Nigeria II. Management and productivity of major cropping systems, van Ek, G. A., Henriet, J, Blade, S. and Singh, B., in: Samaru Journal of Agricultural Research, volume 14, pages 47-60, 1997. |
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| Quantitative assessment of traditional cropping systems in the Sudan savanna of northern Nigeria: I. Rapid survey of prevalent cropping systems, Henriet, J, van Ek, G. A., Blade, S. and Singh, B., in: Samaru Journal of Agricultural Research, volume 14, pages 37-45, 1997. |
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| Quantitative assessment of traditional cropping systems in the Sudan savanna of northern Nigeria: III. Importance of trees, shrubs and secondary crops in the cropping systems, Henriet, J, van Ek, G. A., Blade, S. and Singh, B., in: Samaru Journal of Agricultural Research, volume 14, pages 61-66, 1997. |
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| Quantitative characterization of nutritional components, amino acids and diosgenin in tubers of D. cayenensis cv. Alo from Edo State, Nigeria, Matsumoto, R., Kashimira, O., Lopez-Montes, A., Kikuno, H . and Shiwachi, H ., Abstract, P.115 in the Book of Abstracts, 16th Triennial Symposium of the International Society for Tropical Root Crops (ISTRC), 23 - 28, September, 2012. |
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| Quantitative genetics, molecular techniques and agronomic performance of provitamin A maize in sub-Saharan Africa, Badu-Apraku, B., Fakorede, M.*, Talabi, A. O., Obeng-Bio, E.*, Tchala, W. and Oyekale, S. A.*, pages 276-324, chapter 17, CAB International, ISBN 978-1-78-924021-4, 2020. [DOI] |
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| Quantitative trait loci and genomic prediction for grain sugar and mineral concentrations of cowpea [Vigna unguiculata (L.) Walp.], Huynh, B., Stangoulis, J. C. R., Vuong, T. D., Shi, H., Nguyen, H. T., Duong, T., Boukar, O., Kusi, F.*, Batieno, B. J.*, Cisse, N.*, Diangar, M. M., Awuku, F. J.*, Attamah, P.*, Crossa, J., Perez-Rodriguez, P., Ehlers, J. D. and Roberts, P. A., in: Scientific Reports, volume 14, pages 1-11, ISSN 2045-2322, 2024. [DOI] |
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| Quantitative variation and phenotypic correlations in banana and plantain, Ortiz, R. and Vuylsteke, D., in: Scientia Horticulturae, volume 72, pages 239-253, 1998. |
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| Quelle place du conseil agricole dans les services support a l'innovation a Madagascar?, Audouin, S., Dugue, P., Randrianarisona, N.*, Ndah, H. T., Ratsimbazafy, T.*, Andriamaniraka, H.*, Noharinjanaharya, E. S.*, Ralisoa, N.* and Mathe, S., in: Cahiers Agricultures, volume 30, number 29, pages 1-10, ISSN 1166-7699, 2021. [DOI] |
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| RAAIS: Rapid Appraisal of Agricultural Innovation Systems (Part I); a diagnostic tool for integrated analysis of complex problems and innovation capacity, Schut, M., Klerkx, L., Rodenburg, J., Kayeke, J.*, Hinnou, L. C.*, Raboanarielina, C. M., Adegbola, P. Y.*, Van Ast, A. and Bastiaans, L., in: Agricultural Systems, volume 132, pages 1-11, ISSN 0308-521X, 2015. [DOI] |
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| RAAIS: Rapid Appraisal of Agricultural Innovation Systems (Part II); integrated analysis of parasitic weed problems in rice in Tanzania, Schut, M., Rodenburg, J., Klerkx, L., Kayeke, J.*, Van Ast, A. and Bastiaans, L., in: Agricultural Systems, volume 132, pages 12-24, ISSN 0308-521X, 2015. [DOI] |
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| Radopholus similis management in banana: prospects for the use of endophytic nonpathogenic isolates of Fusarium oxysporum, Niere, B., Gold, C., Coyne, D., Dubois, T., Shahasi, A. and Mukwaba, E., in: Book of Abstracts 27th ESN International Symposium, 14-18 May 2004, Rome, Italy, 2004. |
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| Radopholus similis management in banana: prospects for the use of endophytic nonpathogenic isolates of Fusarium oxysporum, Niere, B., Gold, C., Coyne, D., Dubois, T., Shahasi, A. and Mukwaba, E., 2004. |
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| Rapid acquisition, management, and analysis of spatial maize (zea mays L.) phenological data- towards 'Big Data' for agronomy transformation in Africa, Tonnang, H. E. Z., Balemi, T.*, Masuki, K., Mohammed, I. B., Adewopo, J., Adnan, A. A.*, Mudereri, B. T., Vanlauwe, B. and Craufurd, P., in: Agronomy, volume 10, number 9: 1363, pages 1-12, ISSN 2073-4395, 2020. [DOI] |
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| Rapid analyses of dry matter content and carotenoids in fresh cassava roots using a portable visible and near infrared spectrometer (Vis/NIRS), Ikeogu, U. N., Devarieux, A., Dufour, D., Ceballos, H., Egesi, C. and Jannink, J., in: PloS ONE, volume 12(12):, number 12:e0188918, pages 1-17, ISSN 1932-6203, 2017. [DOI] |
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| Rapid Appraisal of Agricultural Innovation Systems (RAAIS) workshop: Ghana Action Site. CGIAR Research Program on Integrated Systems for the Humid Tropics, Schut, M., Asare, R., Idrissou, L. and Dalaa, M. A., 2015. |
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| Rapid Appraisal of Agricultural Innovation Systems (RAAIS): a toolkit for guiding investment decisions and strengthening innovation capacity in agrifood systems, Schut, M., Klerkx, L., Sartas, M., Van Asten, P. and Leeuwis, C., International Institute of Tropical Agriculture (IITA) and Wageningen University, 2017. |
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| Rapid Appraisal of Agricultural Innovation Systems (RAAIS): a toolkit for integrated analysis of complex agricultural problems and innovation capacity in agrifood systems, Schut, M., Klerkx, L. and Leeuwis, C., International Institute of Tropical Agriculture (IITA) and Wageningen University, 2015. |
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| Rapid multiplication of cassava: IITA research guide, No. 51, Otoo, J., IITA research guide, No. 51, International Institute of Tropical Agriculture (IITA), 1994. |
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| Rapid phenotyping for identification of rice resistant varieties to Diopsis apicalis (Diptera: Diopsidae) Westwood, Roland, B.*, Bernard, G. C.*, Pierre-Louis, A.*, Togola, A., Ibnou, D., Noelle, N. M., Abdoulaye, S. P.* and Tamo, M., in: Cogent Biology, volume 5, pages 1-12, ISSN 2331-2025, 2019. [DOI] |
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| Réaction des génotypes de manioc en champ aux contraintes biotiques et leurs qualités nutritionnelles a Mbang Mboum (Adamaoua, Cameroon), Nukenine, E.*, Njintang, N. Y.*, Housseini, , Njukwe, E., Tenkouano, A., Ngeve, J. and Dixon, A., Abstract (Poster) in Book of Abstracts of the 11th Triennial Symposium of ISTRC-AB, held at Memling Hotel, Kinshasa. 4-8 October, 2010. |
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| Reaction of cassava genotypes to cassava mosaic diseases and cassava green mites at three different altitudes in Uganda, Ntawuruhunga, P., in: Roots Newsletter, volume 12, number 1, pages 15-18, 2009. |
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| Reaction of cassava genotypes to the cassava mosaic disease in three distinct agroecologies in Nigeria, Ngeve, J., Nukenine, E. and Dixon, A., in: Journal of Phytopathology, volume 151, pages 101-107, 2003. |
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| Reaction of cowpea varieties to Alectra vogeli in the northern Guinea Savanna of Nigeria, Magani, I. E.*, Lagoke, S.*, Emechebe, A., Singh, B. and Olufajo, O.*, number 6, 1996. |
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| Reaction of cowpea varieties to Alectra Vogelii (Benth.) in Northern Guinea Savannah of Nigeria, Magani, I. E.*, Lagoke, S. T. O.* and Emechebe, A., in: The Nigerian Agricultural Journal, volume 40, number 1-2, pages 82-92, ISSN 0300-368X, 2009. |
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| Reaction of Dioscorea alata (water yam) to anthracnose disease in Nigeria, Aduramigba-Modupe, A.O., Asiedu, R. and Odebode, C. A.*, in: Journal of Food, Agriculture and Environment, volume 6, number 3-4, pages 248-252, 2008. |
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| Reaction of maize, sorghum and Johnson-grass to Peronosclerospora sorghi, Bigirwa, G., Adipala, E.*, Esele, J. and Cardwell, K., in: International Journal of Pest Management, volume 46, pages 1-6, 2000. |
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| Reaction of white guinea yam (Dioscorea rotundata Poir.) genotypes to virus diseases in four agroecological zones in Nigeria, Odu, B., Asiedu, R., Shoyinka, S.* and Hughes, J., in: Journal of Phytopathology, volume 154, number 11-12, pages 688-693, ISSN 0931-1785, 2006. |
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| Reactions of cowpea to infection by Macrophomina phaseolina isolates from leguminous plants in Nigeria, Amusa, N. A., Okechukwu, R. and Akinfenwa, B., in: African Journal of Agricultural Research, volume 2, number 3, pages 073-075, 2007. |
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| Reactions of elite cassava genotypes to root rot disease and the role of different microorganisms, Onyeka, T., Dixon, A., Ikotun, T.* and Wydra, K., pages 648-652, Government of Benin, 2001. |
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| Reactions of leaf retention and pest and disease incidence of cassava (Manihot esculenta Crantz) genotypes to leaf harvesting, Lahai, M.*, Ekanayake, I. J. and George, J.*, in: Tropical Agriculture (Trinidad), volume 75, pages 154-159, ISSN 0041-3216, 1998. |
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| Reactions of sorghum genotypes to leaf, panicle and grain anthracnose under field conditions in Mali, Hess, D. E.*, Bandyopadhyay, R. and Sissoko, I., in: Towards sustainable sorghum production, utilization, and commercialization in West and Central Africa: proceedings of a Technical Workshop of the West and Central Africa Sorghum Research Network, 19â??22 April 1999, Lome, Togo, pages 163-177, International Crops Research Institute for the Semi Arid Tropics, Patancheru 502 324, Andhra Pradesh, India, 2001. |
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| Keywords: | Xanthomonas campestris musacearum; banana Xanthomonas wilt; vectors; inoculation
|
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| Keywords: | Colletotrichum gloeosporioides; genotype x environment (G x E) interaction; stable resistance; water yam; yam anthracnose; yam mosaic virus
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| Field evaluation of IITA improved cowpea (Vigna unguiculata L.) lines for yield potential and stability in different environments and locations, Asiwe, J. A. N.* and Ajeigbe, H., Abstract (Poster) in Program and Book of Abstracts of the 5th World Cowpea Research Conference, held at Palm Beach Hotel, Saly, Senegal. 27 September - 1 October, 2010. |
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| Keywords: | fodder, genotype, grain yeild, Vigna unguiculata
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|
| Keywords: | gender, agricultural innovations, adoption and diffusion, cowpea, west Africa
|
|
| GGE biplot analysis of Dioscorea rotundata cultivar tela genotypes in Ghana, Otoo, E.* and Asiedu, R., in: Journal of Food, Agriculture and Environment, volume 7, number 1, pages 134-139, ISSN 1459-0255, 2009. |
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| Keywords: | D. rotundata; agroecologies; genotypes; genotype x environment interaction
|
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| Prevalence and severity of bacterial blight and anthracnose diseases of cassava in different agro-ecological zones of Nigeria, Onyeka, T., Owolade, F., Ogunjobi, A.*, Dixon, A., Okechukwu, R., Bandyopadhyay, R. and Bamkefa, B., in: African Journal of Agricultural Research, volume 3, number 4, pages 297-304, ISSN 1991-637X, 2008. |
|
| Keywords: | anthracnose, bacterial blight, cassava, Colletotrichum gloeosporioides prevalence, severity, Xanthomonas axonopodis
|
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| Secondary metabolite profile and phytotoxic activity of genetically distinct forms of Colletotrichum gloeosporioides from yam (Dioscorea spp.), Abang, M., Abraham, W., Asiedu, R., Hoffmann, P., Wolf, G. and Winter, S., in: Mychological Research, volume 113, pages 130-140, ISSN 0953-7562, 2009. |
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| Keywords: | Anthracnose; chemotype; chromatography; colletotrichum gloeosporioides; Dioscorea spp.; mass spectrometry; metabolite profiling; NMR; phytotoxin
|
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| Socioeconomic assessment of adoption of production and processing technologies on farming households in Nigeria, Ayedun, B., Okuneye, P. A.*, Dipeolu, A.* and Abdoulaye, T., in: Journal of Agricultural Management and Rural Development, volume 4, number 1, pages 134-147, 2013. |
|
| Keywords: | Adoption; impact; technology; estimates.
|
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| Targeting cowpea breeding and seed delivery efforts to enhance poverty impacts in sub-Saharan Africa, Coulibaly, O., Alene, A., Abdoulaye, T., Chianu, J., Manyong, V., Aitchedji, C., Fatokun, C., Kamara, A., Ousmane, B., Tefera, H. and Boahen, S., Abstract (Oral presentation) in Program and Book of Abstracts of the 5th World Cowpea Research Conference, held at Palm Beach Hotel, Saly, Senegal. 27 September - 1 October, 2010. |
|
| Keywords: | socioeconomic studies, cowpea, sub-Saharan Africa
|
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| The performance profile of Dioscorea rotundata cultivar Dorban genotypes in Ghana using GGE biplot analysis, Otoo, E.* and Asiedu, R., in: Journal of Food, Agriculture and Environment, volume 7, number 1, pages 150-155, ISSN 1459-0255, 2009. |
|
| Keywords: | D. rotundata; genotypes; genotype x environment interaction
|
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| Theoretical and practical considerations in the regeneration of cowpea germplasm at IITA, Ng, N. Q. and Hughes, J., pages 76-80, IPGRI, 1998. |
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| Variability and grain yield potential of pearl millet (Pennisetum glaucum (L) R. Br.) genotypes under irrigated conditions in the Sudan, Ishaq, J.* and Meseka, S. K., in: Canadian Journal of Plant Breeding, volume 2, number 2, pages 76-79, ISSN 2291-6342, 2014. |
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| Keywords: | Pennisetum glaucum, Genotypes, heritability, yields, Sudan
|
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| "Ground-truthing" efficacy of biological control for aflatoxin mitigation in farmers' fields in Nigeria: from field trials to commercial usage, a 10-year study, Bandyopadhyay, R., Atehnkeng, J., Ortega-Beltran, A., Akande, A., Falade, T. D. O. and Cotty, P., in: Frontiers in Microbiology, volume 10, number : 2528, pages 1-23, ISSN 1664-302X, 2019. [DOI] |
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| A comprehensive training module on competitive cassava production, Tarawali, G., Ilona, P., Ojiako, I. A., Iyangbe, C., Ogundijo, S. D., Asumugha, G.* and Udensi, U., 2013. |
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| A CRISPR/Cas9-based genome-editing system for yam (Dioscorea spp.), Syombua, E. D., Zhang, Z., Tripathi, J., Ntui, V. O., Kang, M., George, O. O.*, Edward, N. K.*, Wang, B., Yang, B. and Tripathi, L., in: Plant Biotechnology Journal, volume 19, number 4, pages 645-647, ISSN 1467-7644, 2021. [DOI] |
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| A detached leaf assay to rapidly screen for resistance of maize to Bipolaris maydis, the causal agent of southern corn leaf blight, Aregbesola, A., Ortega-Beltran, A., Falade, T. D. O., Jonathan, G.*, Hearne, S.+ and Bandyopadhyay, R., in: European Journal of Plant Pathology, pages 1-13, ISSN 0929-1873, 2019. |
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| A genome-wide scan divulges key Loci involved in resistance to aphids (Aphis craccivora) in cowpea (Vigna unguiculata), Ongom, P. O., Togola, A., Fatokun, C. and Boukar, O., in: Genes, volume 13, number 11: 2002, pages 1-17, ISSN 2073-4425, 2022. [DOI] |
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| A global overview of cassava genetic diversity, Ferguson, M., Shah, T., Kulakow, P. and Ceballos, H., in: PloS ONE, volume 14, number 11: e0224763, pages 1-16, ISSN 1932-6203, 2019. [DOI] |
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| A grassroot participatory model for accelerated seed production and technology transfer in West Africa, Singh, B. and Ajeigbe, H., Abstract in ASA-CSSA-SSSA-CSSS International Annual Conference Meetings Oct. 31 - Nov. 4, Seattle, Washington, USA., 2004. |
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| A high-throughput regeneration and transformation platform for production of genetically modified banana, Tripathi, J., Oduor, R. O. and Tripathi, L., in: Frontiers in Plant Science, volume 6, number 1025, pages 1-13, ISSN 1664-462X, 2015. [DOI] |
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| A hot bath cleans all: boiling water treatment of banana and plantain. CGIAR SP-IPM Technical Innovative Brief, Hauser, S. and Coyne, D., number 8, 2010. |
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| A micro-level farm management study in western Nigeria: field work design and application, Zuckerman, P., 1979. |
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| A micro-level farm management study in western Nigeria: some results and experiences with questionnaires, Zuckerman, P., 1979. |
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| A multi-level and multi-actor approach to risk governance: a conceptual framework to support policy development for Ambrosia weed control, Lansink, A. O., Schut, M., Kamanda, J . and Klerkx, L., in: Journal of Risk Research, pages 1-20, ISSN 1366-9877, 2016. [DOI] |
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| A proposal for the use of the partnership-extension model to facilitate adoption of the International Institute of Tropical Agriculture's plantain and banana (Musa spp.) technologies in Nigeria, Ogunlade, I.* and Coulibaly, O., in: Acta Horticulturae, volume 2, number 879, pages 791-796, ISSN 0567-7572, 2010. |
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| A report on "Cassava Science Day: cassava performance under different soil management" February 18,2013 at IITA-Cameroon, IITA, , 2013. |
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| A review of cassava semolina (gari and eba) end-user preferences and implications for varietal trait evaluation, Awoyale, W., Alamu, E. O., Chijioke, U.*, Thierry, T., Takam-Tchuente, N. H., Ndjouenkeu, R.*, Kegah, F. N.* and Maziya-Dixon, B., in: International Journal of Food Science & Technology, pages 1-37, ISSN 0950-5423, 2020. [DOI] |
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| A review of NARES-IARC-Donor collaboration to develop demand-driven technologies for improved maize production in West and Central Africa, Fakorede, M., Badu-Apraku, B., Menkir, A., Ajala, S. and Fontem Lum, A., in: Demand-driven technologies for sustainable maize production in West and Central Africa: proceedings of the Fifth biennial Regional Maize Workshop, 3-6 May 2005, IITA- Cotonou, Benin Republic, pages 3-24, 2007. |
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| A review of the current knowledge on Zeugodacus cucurbitae (Coquillett) (Diptera, Tephritidae) in Africa, with a list of species included in Zeugodacus, de Meyer, M., Delatte, H., Mwatawala, M.*, Quilici, S., Vayssieres, J. and Virgilio, M., in: ZooKeys, volume 540, pages 539-557, ISSN 1313-2989, 2015. [DOI] |
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| A second new world hoverfly, toxomerus floralis (Fabricius) (Diptera: Syrphidae), recorded from the old world, with description of larval pollen-feeding ecology, Jordaens, K., Goergen, G ., Kirk-Spriggs, A.*, Vokaer, A., Backeljau, T. and de Meyer, M., in: Zootaxa, volume 4044, number 4, pages 567-576, ISSN 1175-5326, 2015. [DOI] |
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| A simple and rapid protocol for the genetic transformation of Ensete ventricosum, Matheka, J. M., Tripathi, J., Merga, I. F., Gebre, E.* and Tripathi, L., in: Plant Methods, volume 15, number : 130, pages 1-17, ISSN 1746-4811, 2019. [DOI] |
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| Accelerated multiplication and distribution of improved healthy planting materials of Cassava varieties in Western Kenya, Odero, B. O., Obiero, H., Ndolo, P. J., Whyte, J., Legg, J., Malinga, J. and Magut, T., in: Proceedings of 9th ISTRC-AB symposium, pages 267-270, Mombasa, Kenya, 2007. |
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| Actor diversity and interactions in the development of banana hybrid varieties in Uganda: implications for technology uptake, Sanya, L. N.*, Sseguya, H., Kyazze, F.*, Baguma, Y.* and Kibwika, P.*, in: The Journal of Agricultural Education and Extension, volume 24, number 2, pages 153-167, ISSN 1389-224X, 2018. [DOI] |
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| Actor interactions in the development and uptake of new hybrid banana varieties in Uganda: Phdthesis, Nasirumbi, L.*, Makerere University, 2017. |
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| Adoption and impact of improved cassava and sweetpotato varieties on food security in Malawi, Jumbo, S., Mahungu, N., Mhone, A., Moyo, C., Sandifolo, V., Siyeni, D., Nthonyiwa, A. and Sichinga, K., in: Proceedings of 9th ISTRC-AB symposium, pages 26-33, Mombasa, Kenya, 2007. |
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| Adoption and impact of improved technologies in developing countries: the case of Imazapyr-resistant maize in Western Kenya, Mignouna, D., Mutabazi, K. D.* and Manyong, V., LAP LAMBERT Academic Publishing. (BOOK), ISBN 978-3659115769, 2012. |
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| Adoption of improved cassava varieties in Uganda: implications for agricultural research and technology dissemination, Abele, S., Twine, E., Ntawuruhunga, P., Baguma, Y.*, Kanobe, C. and Bua, A.*, in: African Association of Agricultural Economists Conference, Accra, Ghana, 20-22 August 2007, pages 1-17, 2007. |
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| Advanced genetic technologies for improving plant production, Thomson, J. A., Oikeh, S.*, Sithole-Niang, I.* and Tripathi, L., Earthscan Food and Agriculture, pages 161-169, Routledge, ISBN 978 1-13839-353-0, 2019. [DOI] |
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| Advances in somatic embryogenesis of banana, Adero, M. O., Tripathi, J. and Tripathi, L., in: International Journal of Molecular Sciences, volume 24, number 13: 10999, pages 1-16, ISSN 1661-6596, 2023. [DOI] |
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| Advances on engineering cassava for food and nutrition sec in the 21st century, Okereke, N. R.*, Okwuonu, I. C.*, Onyeka, T. J.*, Egesi, C. and Popoola, A. R.*, pages 13-27, chapter 3, CRC Press, ISBN 978-03677-6695-5, 2022. [DOI] |
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| Aflasafe in Africa: progress and prospects for biocontrol in aflatoxin mitigation, Bandyopadhyay, R., Atehnkeng, J., Augusto, J., Beed, F., Cassidy, D., Cotty, P., Dubois, T., Hasson, O., Masha, K.*, McDaniel, M., Mignouna, J.*, Mutegi, C., Sandahl, J. and Warrior, P., Abstract, P. 40 in Abstracts of Lectures and Posters, 7th Conference of the World Mycotoxin Forum and 13th IUPAC International Symposium on Mycotoxins and Phycotoxins. 5-9 November 2012, Rotterdam, the Netherlands, 2012. |
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| Aflatoxin - the invisible threat to Nigeria's food security, IITA, and AgResults, , number 001, 2018. |
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| Aflatoxin management strategies in sub-Saharan Africa, Falade, T. D. O., pages 1-14, IntechOpen, 2018. [DOI] |
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| Agro-biotechnology for improving agriculture in sub-Saharan Africa: rationale, philosophy and summary of ongoing research at IITA, Ortiz, R., in: Plant Breeding News, volume 130, number 2, pages 4, 2001. |
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| Agroecological farming approaches that enhance resilience and mitigation to climate change in vulnerable farming systems, Tesfai, M., Alamu, E. O., Njoloma, J., Nagothu, U. S. and Joel, D., pages 147-168, chapter 8, Routledge, ISBN 978-1-03222-579-1, 2022. [DOI] |
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| Agronomic performance and yield stability of extra-early maturing maize hybrids in multiple environments in the Sahel, Konate, L.*, Badu-Apraku, B., Coulibaly, M.*, Menkir, A., Laouali, M. N.*, Meseka, S. K. and Mengesha Abera, W., in: Heliyon, volume 9, number 11: e21659, pages 1-10, ISSN 2405-8440, 2023. [DOI] |
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| Allometric equations, wood density and partitioning of aboveground biomass in the arboretum of Ruhande, Rwanda, Mukuralinda, A., Kuyah, S.*, Ruzibiza, M.*, Ndoli, A., Nabahungu, N. L. and Muthuri, C., in: Trees, Forests and People, volume 3, number -: 100050, pages 1-8, ISSN 2666-7193, 2021. [DOI] |
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| Amelioration de la production de l'igname a travers la fertilisation minerale en zone de savene de Cote d'Ivoire, Soro, D., Dao, D.*, Carsky, R., Asiedu, R., Bi, T., Tra, , Assa, A. and Girardin, O., in: Atelier national sur le developpement durable de la production et de la consommation de l'igname en Cote d'Ivoire. Abidjan, October 23-26. Association Ivoirienne des Sciences Agronomique (AISA), pages 39-46, 2003. |
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| An evaluation of a CDA herbicide sprayer in a tropical environment, Akobundu, I. and Utulu, S.N., International Institute of Tropical Agriculture (IITA), 1980. |
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| An evaluation of farmer field school training on the livelihoods of cocoa farmers in Atwima District, Ashanti Region, Ghana, Gockowski, J., Asamoah, C., David, S., Nkamleu, G. B., Gyamfi, I., Agordorku, S. and Adu-Kumi, M., 2006. |
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| An evaluation of the farmer's knowledge and use of hydromorphic toposequences in the western state of Nigeria: findings from seletected areas in the Oshun river basin, Okali, C., Oben, T., Ojo, A. and Lawson, T. L., 1979. |
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| An integrated molecular and conventional breeding scheme for enhancing genetic gain in maize in Africa, Gedil, M. and Menkir, A., in: Frontiers in Plant Science, volume 10, number -: 1430, pages 1-17, ISSN 1664-462X, 2019. [DOI] |
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| An investigation of factors that influence the technical efficiency of soybean production in the Guinea savannas of Nigeria, Amaza, P. and Ogundari, K., in: Journal of Food, Agriculture and Environment, volume 6, number 1, pages 132-136, ISSN 1459-0255, 2007. |
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| Analysis of interactions between cassava brown streak disease symptom types facilitates the determination of varietal responses and yield losses, Ndyetabula, I.*, Merumba, S.*, Jeremiah, S. C.*, Kasele, S.*, Mkamilo, G.*, Kagimbo, F. M.* and Legg, J., in: Plant Disease, volume 100, number 7, pages 1388-1396, ISSN 0191-2917, 2016. [DOI] |
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| Analysis of the need for biotechnology research on cassava, yam, and plantain, Asiedu, R., Ng, S. Y. C., Vuylsteke, D., Terauchi, R. and Hahn, S. K., pages 27-32, CTA; International Institute of Tropical Agriculture (IITA), 1992. |
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| Analyzing the contribution of Cameroon's council forests to climate change mitigation and socioeconomic development, Alemagi, D., Duguma, L., Minang, P., Kehbila, A. G., Yemefack, M. and Tchoundjeu, Z., pages 79-94, chapter 4, Intech, ISBN 978-953-51-2758-1, 2016. [DOI] |
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| Antioxidant and starch-hydrolyzing enzymes inhibitory properties of Striga-resistant yellow-orange maize hybrids, Elemosho, A. O.*, Irondi, E. A.*, Alamu, E. O., Ajani, E. O.*, Menkir, A. and Maziya-Dixon, B., in: Molecules, volume 26, number 22: 6874, pages 1-13, ISSN 1420-3049, 2021. [DOI] |
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| Application of biotechnology to yam improvement in CSIR-Crops Research Institute (CRI) (ABSTRACT), Quain, M. D., Prempeh, R. N., Agyeman, A., Asibuo, J. Y.*, Parkes, E., Ribeiro, P. F.*, Otoo, E.* and Egnin, M., Abstract, P. 301 in the book of abstracts and programme of the 12th Triennial Symposium of International Society for Tropical Root Crops-Africa Branch (ISTRC-AB), 30 - 5, October, Alisa Hotel, Accra, Ghana, 2013. |
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| Appropriate farming practices resilience to climate change: case of cassava on non-incineration of a grassy fallow forest of Kisangani (ABSTRACT), Ndonda, A., Mahungu, N. and Frangoie, A., Abstract, P. 155 in the book of abstracts and programme of the 12th Triennial Symposium of International Society for Tropical Root Crops-Africa Branch (ISTRC-AB), 30 - 5, October, Alisa Hotel, Accra, Ghana, 2013. |
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| Arbuscular mycorrhizal fungi (AMF) in the rhizosphere of bananas in farming systems of Central Kenya, Jefwa, J.*, Ruto, L.*, Elsen, A., Kahangi, E.*, Van Asten, P., Losenge, T.*, Mwajita, M.*, Vanlauwe, B. and Sanginga, N.+, Abstract, 2007. |
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| Archiving root and tuber research data. The small processor and development of local food industries for market economy, Okechukwu, R., Okonkwo, C., Quin, F., Asiedu, R. and Dixon, A., in: The small processor and development of local food industries for market economy, pages 376-379, International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria, 2004. |
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| Are we there yet? Some reflections on the state of innovation platforms in agricultural research for development., Dror, I., Cadilhon, J. and Schut, M., pages 179-183, chapter 11, Earthscan, Routledge, ISBN 978-1-138-18171-7, 2016. |
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| Assessing host range, symbiotic effectiveness, and photosynthetic rates induced by native soybean rhizobia isolated from Mozambican and south African soils, Gyogluu, C.*, Mohammed, M.*, Jaiswal, S. K.*, Boahen, S. and Dakora, F. D.*, in: Symbiosis, volume 75, pages 257-266, ISSN 0334-5114, 2018. [DOI] |
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| Assessing the representativeness and repeatability of testing sites for drought-tolerant maize in West Africa, Badu-Apraku, B., Akinwale, R.*, Obeng-Antwi, K.*, Haruna, A.*, Kanton, R.*, Ado, S. G.*, Coulibaly, N.*, Yallou, C.* and Oyekunle, M., in: Canadian Journal of Plant Science, volume 93, number 4, pages 699-714, ISSN 0008-4220, 2013. |
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| Assessment of functional and pasting properties of fresh orange maize hybrids and open-pollinated varieties as influenced by genotype, harvesting time, and growing location, Alamu, E. O., Maziya-Dixon, B., Menkir, A., Adesokan, M. and Olaofe, O.*, in: Frontiers in Nutrition, volume 8, number -: 757728, pages 1-10, ISSN 2296-861X, 2021. [DOI] |
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| Assessment of genetic diversity and heterotic alignment of CIMMYT and IITA maize inbred lines adapted to sub-Saharan Africa, Gonhi, T.*, Odong, T. L.*, Dramadri, I.*, Ochwo-Ssemakula, M.*, Chiteka, Z. A.*, Adjei, E. A.*, Muungani, D., Menkir, A., Badu-Apraku, B., Adejumobi, I. I., Uwimana, B., Dhliwayo, T., Wegary, D. and Derera, J., in: Crop Science, pages 1-19, ISSN 0011-183X, 2024. [DOI] |
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| Assessment of genetic diversity for drought, heat and combined drought and heat stress tolerance in early maturing maize landraces, Nelimor, C., Badu-Apraku, B., Tetteh, A. Y.* and N'guetta, A. S., in: Plants, volume 8, number : 518, pages 1-19, ISSN 2223-7747, 2019. [DOI] |
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| Assessment of heavy metals and microbial contamination of gari from Liberia, Awoyale, W., Asiedu, R., Kawalawu, W. K.*, Maziya-Dixon, B., Abass, A., Edet, M. and Adetunji, M.*, in: Food Science & Nutrition, pages 1-5, ISSN 2048-7177, 2017. [DOI] |
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| Assessment of soil management practices in East African highland cooking banana (Musa spp. AAA-EA) systems in Uganda, Wairegi, L., Van Asten, P., Kiwanuka, C., Tenywa, M.* and Bekunda, M.*, in: AFNET symposium innovations as key to the green revolution in Africa: exploring the scientific facts in Arusha, Tanzania, 17-21 September, 2007, pages 86, 2007. |
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| Assessment of striga infestation in crop fields in the savanna zones of northeast Nigeria, Dugje, I.*, Kamara, A. and Omoigui, L., in: In demand-driven technologies for sustainable maize production in West and Central Africa, proceedings of the fifth biennial regional maize workshop, pages 271-281, International Institute of Tropical Agriculture (IITA); WECAMAN, Ibadan, Nigeria: Cotonou, Benin, 2007. |
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| Assessment of the nutritional composition, physical properties and sensory quality of composite bread baked with high-quality cassava flour from biofortified and white- fleshed cassava roots, Awoyale, W., Abass, A., Amaza, P.*, Oluwasoga, O. and Nwaoliwe, G., in: Preprints, pages 1-30, 2019. [DOI] |
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| Attaining the state of food sufficiency in sub-saharan Africa through biotechnology research - the IITA Bioscience Center approach, Fasanmade, Y. and Gedil, M., Abstract, p. 22 in the Book of Abstracts for the National Conference of Biotechnology Society of Nigeria (BSN), Biotechnology: a critical tool for achieving food security, affordable healthcare delivery and rapid industrialization, 25-29 August, 2014. |
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| A caco-2, Abstract, 2006. |
|
Abstract:
Fe absorption from the tropical maize variety, ACR90POOL16-DT (ACR), previously found to have similar Fe content, but higher Fe bioavailability in vitro, was compared with a control variety, TZB-SR (TZB), in 26 non-anemic women, 21–48 y, with serum ferritin 3-248 µg/L. Porridge made from 50 g dw corn with extrinsic 55Fe or 59Fe was consumed w/wo orange juice (~40 mg ascorbate; AA). Fe absorption, determined from 14-d isotope retention in whole body and blood, did not differ between ACR [2.2% (1.7, 2.7); geom. mean (± 1 SEM)] and TZB [2.0% (1.6, 2.5)]. With the difference in Fe content (840 vs. 710 µg/meal), Fe absorbed from ACR tended to be higher than TZB [18 (15, 23) vs. 14 (11, 18) µg/meal; P = 0.07]. AA greatly increased (P<0.0001) Fe absorbed from ACR [58 µg (46, 73)] and TZB meals [51 µg (41, 64)], again with unsubstantial differences between varieties. Tested with the Caco-2 model, identical meals induced no difference in ferritin formation (ng/mg cell protein) between varieties alone (ACR 33 ± 4 vs. TZB 37 ± 10; mean ± SD) or with AA (ACR 174 ± 34 vs. TZB 165 ± 37). The absorption ratio in humans (3.4 w/wo AA) was closely predicted by the Caco-2 model (2.7) using the conversion of Yun et al (J Nutr, 2004). Small differences in Fe content or bioavailability between cultivars may not persist across growing seasons. AA-rich foods can substantially enhance Fe absorption and the Caco-2 model is a valid tool for predicting this enhancement.
|
| An investigation of factors that influence the technical efficiency of soybean production in the Guinea savannas of Nigeria, Amaza, P. and Ogundari, K., in: Journal of Food, Agriculture and Environment, volume 6, number 1, pages 132-136, ISSN 1459-0255, 2007. |
|
Abstract:
The objective of this study was to examine the determinants of technical efficiency (TE) of soybean production in the Guinea savannas. A stochastic frontier production function, using maximum likelihood estimation (MLE) technique was applied in the analysis of data collected in 2006 from a sample of 182 soybean farmers in the guinea savannas of Borno State, Nigeria. The MLE results revealed that farm size, seeds, family labour, hired labour and fertilizer were the major factors that were associated with change in the output of soybeans and were significant (Ï=0.05). About 78% variations in the farmers output can be attributed to differences in their technical efficiency. The mean farmers TE index was found to be 0.79. The implication is that soybean production could be increased by approximately 21% through the improved use of available resources, given the current state of technology. Farmer-specific efficiency factors, which comprise age, gender and use of animal traction and market accessibility, were the significant factors that account for the observed variation in efficiency among the farmers. The policy implication of this finding is that providing farmers with effective market linkage, access to education, especially extension education and credit facilities to purchase animal traction will strengthen their present level of TE and the productivity potential of the soybean farmers in the study area.
|
| Analysis of the need for biotechnology research on cassava, yam, and plantain, Asiedu, R., Ng, S. Y. C., Vuylsteke, D., Terauchi, R. and Hahn, S. K., pages 27-32, CTA; International Institute of Tropical Agriculture (IITA), 1992. |
|
Abstract:
Cassava, yam, and plantain are staple food crops essential to food security in the humid and subhumid tropics of Africa. However, these crops have long growth cycles, high perishability and slow multiplication rates of propagation materials, and they are subject to a number of biological stresses. These stresses include diseases, insects, mites, nematodes, and weeds. There are gaps in our knowledge, especially in the area of genetics, which influence the pace
of breeding. Intensification of research i s needed in cytogenetics, molecular genetics, in vitro culture, cry op reservation, and disease diagnosis.
|
| Antinutrients and heavy metals in new Nigerian Musa hybrid peels with emphasis on utilization in livestock production, Adeniji, T. A., Barimalaa, I. S.*, Tenkouano, A., Sanni, L. and Hart, A. D.*, in: Fruits, volume 63, number 2, pages 65-73, ISSN 0248-1294, 2008. |
|
Abstract:
Introduction. A comparative study of antinutrients and heavy metals in the peels of five improved varieties of plantain and banana hybrids was investigated. Our aim was to provide information on plantain and banana peels that may circumvent huge losses during fruit processing by converting waste into wealth and health. Materials and methods. Four new plantain hybrids developed at the IITA, Nigeria, named PITA 14, PITA 17, PITA 24 and PITA 26, one cooking banana hybrid (BITA 3) and an African plantain landrace, Agbagba, were investigated. Antinutrient and heavy metal contents of the dried peels from the different cultivars were determined and the data were statistically analyzed. Results and discussion. The plantain hybrid PITA 14 differed significantly from other cultivars in saponin, tannin and oxalate. A significant difference was observed between PITA 17 in phytate compared with other cultivars. Cyanogenic glucosides found in PITA 17, PITA 26 and BITA 3 differed significantly from the values obtained in other cultivars. Both BITA 3 and Agbagba are significantly different from other cultivars in phenolic content, while PITA 24 and Agbagba differed significantly from other cultivars in lead. PITA 24 peels differed significantly from other cultivars in cadmium, but no significant difference was found among the different Musa varieties in mercury. Conclusion. In spite of the antinutritional properties ascribed to the various constituents investigated, the levels found in the peels of new Musa hybrids suggest that new varieties might not constitute a health hazard when ingested. Plantain and banana peels may be converted into livestock feeds, which will eventually provide protein and other nutrients to humans from consumption of meat and other products derived from the animals.
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| Assessment of banana planting practices and cultivar tolerance in relation to management of soilborne Xanthomonas campestris pv musacearum, Mwangi, M., Bandyopadhyay, R., Ragama, P. and Tushemereirwe, W. K.*, in: Crop Protection, volume 26, pages 1203-1208, 2007. [DOI] |
|
Abstract:
Experiments were carried out to evaluate various options to reduce wilting of bananas replanted to rehabilitate farms previously destroyed by Xanthomonas campestris pv musacearum (Xcm). Paring, time taken to cure paring injuries and covering corms with infested or uninfested soil were evaluated. Nine banana cultivars were evaluated for tolerance to infection by Xcm through roots. An average of 75% of corms planted immediately after paring and covered with infested topsoil wilted as compared to 25% incidence when pared corms were covered in uninfested soil and over-layered with infested soil. No plants wilted when pared corms were cured for 3 days before planting. Unpared corms planted and covered with infested soil on the same day they were dislodged from mother plants had an average of 40% wilt incidence. Unpared corms had less wilt incidence if kept for 2{\^a}€“3 days before planting. Differences were observed in cultivar susceptibility to infection through corms and roots with cultivars Enzagata and Yangabi Km5 being least susceptible. Cultivars Gonja, Kibuzi and Pisang Awak were more susceptible with 50{\^a}€“75% wilt incidence in pot trials and 36{\^a}€“45% in field trials. The less susceptible cultivars had fewer and shorter primary roots, and took an average of 69{\^a}€“77 days to wilt while the more susceptible cultivars had more and longer primary roots and wilted within 40{\^a}€“50 days after planting. Results of the study show that adjustments in planting practices could contribute to reducing wilting incidence and hence support efforts to rehabilitate banana productivity in farms devastated by Xcm.
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| Beta-carotene micellarization during in vitro digestion and uptake by caco-2 cells is directly proportional to beta-carotene content in different genotypes of cassava, Thakkar, S. K., Maziya-Dixon, B., Dixon, A. and Failla, M. L., in: Journal of Nutrition, volume 137, number 10, pages 2229-2233, 2007. |
|
Abstract:
Cassava, a staple food in sub-Saharan Africa, does not provide adequate amounts of pro-vitamin A (VA) carotenoids and has been targeted for biofortification (i.e. selectively breeding cultivars of increased nutrient density with agroeconomically acceptable characteristics). However, the accessibility of pro-VA carotenoids for absorption in different cultivars of cassava remains unknown. Here, we used the coupled in vitro digestion/Caco-2 cell uptake model to screen the relative accessibility of {\ss}-carotene ({\ss}C) in 10 cultivars of cassava with varying concentrations of {\ss}C. After cooking (boiled for 30 min), the {\ss}C concentration in tubers from different cultivars ranged from less than detectable to 6.9 {\"i}¿½g {\ss}C/g cassava. Samples were subjected to simulated oral, gastric, and small intestinal digestion to determine stability and micellarization of {\ss}C. All-trans {\ss}C, 9-cis {\ss}C, and 13-cis {\ss}C were the most abundant carotenoids in cooked cassava and recoveries after digestion exceeded 70%. Efficiency of micellarization of total {\ss}C was 30 {\"i}¿½ 2% for various cultivars with no significant difference in isomers and linearly proportional to concentration in cooked cassava (r = 0.87; P < 0.001). Accumulation of all-trans {\ss}C by Caco-2 cells incubated with the diluted micelle fraction for 4 h was proportional (R2 = 0.99; P < 0.001) to the quantity present in micelles. These results suggest that all-trans {\ss}C content appears to provide the key selection marker for breeding cassava to improve VA status and that the more complicated screening procedure using in vitro digestion coupled to cell uptake does not provide additional information on potential bioavailability.
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| Biological control of Imperata cylindrica, Beed, F., Charudattan, R. and Den Breeyen, A., in: Proceedings of the 4th International Weed Science Congress, 20-24 June 2004, Durban, South Africa, pages 33, 2004. |
|
Abstract:
An overview will be provided of the prospects for the biological control of the
rhizomatous grass Imperata cylindrica [(L.) Raeuschel]. Imperata cylindrica is
an undisputed target for control technologies in West Africa as it reduces crop
yields and causes the abandonment of agricultural land for resource poor
farmers. Biological control can provide an environmentally friendly,
sustainable and selective method that will be adopted if it provides
advantages over alternative control strategies. The influence of variation
between biotypes of I. cylindrica will be considered in relation to their control
by a single biological organism. The potential of fungal pathogens recovered
from surveys in West Africa will be evaluated including Colletotrichum
caudatum, Drechslera gigantea, Exserohilum rostratum, Glomerella cingulata
and Puccinia rufipes. Malaysian isolates of C. caudatum have previously been
tested as a biocontrol agent against the biotype there and isolates of D.
gigantea and E. rostratum from USA were included in bioherbicide
preparations against an USA biotype of I. cylindrica. Puccinia rufipes could
potentially control this weed; as it is a biotroph, it is likely to act as a
physiological sink to deplete the carbohydrate reserves stored in the
rhizomes. It is the mobilisation of this stored carbohydrate which facilitates
this weed’s competitive advantage to rapidly produce leaves following
disturbance to the ecosystem, such as in slash and burn agriculture. This rust
pathogen has also been observed, along with other biotrophs, in South Africa,
where I. cylindrica is not considered a weed.
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| Biopreservative activities of Lactobacillus plantarum strains in fermenting cassava 'fufu', Obadina, A. O.*, Oyewole, O.*, Sanni, L. and Tomlins, K., in: African Journal of Biotechnology, volume 5, number 8, pages 620-623, ISSN 1684-5315, 2006. |
|
Abstract:
The growth of three pathogens, namely Escherichia coli, Staphylococcus aureus and Salmonella typhii were investigated in fermenting and non-fermenting cassava. The pH of the steeped cassava was also examined during fermentation. Antimicrobial effects of the Lactobacillus plantarum on the pathogens were also determined by agar diffusion method. All the pathogens were inhibited by L. plantarum strains with Staph. aureus having the highest inhibitory zone followed by E. coli and S. thyphii. However, in the fermenting cassava, the pathogens increased in population within the first 36 h of the process and decreased to complete extinction after the 96 h of fermentation. The L. plantarum exhibited high but varying degree of inhibition on the pathogens. The findings justify the bio-preservative roles of lactic acid bacteria in traditional cassava products.
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| Breeding soybeans for the tropics capable of nodulating effectively with indigenous Rhizobium spp., Kueneman, E., Root, W. R., Dashiell, K. and Hohenberg, J., in: Plant and Soil, volume 82, number 3, pages 387-396, 1984. [DOI] |
|
Abstract:
Most soybean varieties fail to nodulate effectively in tropical soils unless inoculated with a competitive strain of Rhizobium japonicum. Developing countries in the tropics, with few exceptions, lack inoculant industries to produce and distribute viable inoculants to small farmers and extension programs to teach them to use inoculant. Several soybean genotypes have been identified that nodulate effectively with many strains of the cowpea inoculation group which is ubiquitous in tropical soils of Africa. Soybean genotypes that nodulate and grow well without inoculant application are called promiscuous. Methodologies for incorporation of the promiscuity character into high-yielding backgrounds are discussed.
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| Cassava improvement in sub-Saharan Africa: contributions of IITA and its partners, Dixon, A., Okechukwu, R., Ssemakula, G., Hanna, R., Thresh, J. M., Hughes, J., Ingelbrecht, I., Fregene, M.*, Legg, J., Mahungu, N., Nweke, F., Ntawuruhunga, P., Fauquet, C., Manyong, V., Neuenschwander, P., Whyte, J., Wydra, K., Asiedu, R., Egesi, C. N.*, Bandyopadhyay, R., Winter, S., Tarawali, G., Bokanga, M., Ezedinma, C., Sanni, L., Ferguson, M., Ogbe, F., Akoroda, M., Maziya-Dixon, B., Ilona, P., Ekanayake, I. J., Ariyo, O., Onyeka, J.*, Otim-Nape, G.*, Dahniya, M. T., Ortiz, R., Hahn, S. K. and Hartmann, P., 2008. |
|
Abstract:
Cassava improvement in sub-Saharan Africa: contributions of IITA and its partners
Dixon, A.G.O., R.U. Okechukwu, G. Ssemakula, R. Hanna, J.M. Thresh, J.d'A. Hughes, I. Ingelbrecht, M. Fregene, J. Legg, N. Mahungu, F. Nweke, J.P. Legg, P. Ntawuruhunga, C. Fauquet, V. Manyong, P. Neuenschwander, J. Whyte, K. Wydra, R. Asiedu, C.N. Egesi, R. Bandyopadhyay, S. Winter, G. Tarawali, M. Bokanga, C. Ezedinma, L. Sanni, M. Ferguson, F.O. Ogbe, M. Akoroda, B. Maziya-Dixon, P. Ilona, I.J. Ekanayake, O. Ariyo, J. Onyeka, G.W. Otim-Nape, M.T. Dahniya, R. Ortiz, S.K. Hahn and P. Hartmann
Cassava is well recognized for its capacity to address food needs of vulnerable communities in unstable environments in SSA. IITA and colleagues in African NARS, in collaboration with CIAT and ARIs have played leading roles in the development of improved cassava varieties which are disease and pest resistant, early maturing, and high yielding. Through a combination of conventional and new approaches, over 400 cassava genotypes have been developed. The characteristics of the new generation of cassava germplasm broke what had been an apparent yield barrier in cassava improvement increasing yields in many locations by at least 50-100% without the use of fertilizer. The improved germplasm is shared with NARS within the region as specific genotypes or improved seed populations for evaluation and selection under local conditions. Improvement programs in Africa that received these materials have tested them under local conditions, selected varieties that outperform local varieties, and released them to farmers in virtually every major cassava producing country. Today, about 30% of the area cropped with cassava in Africa is planted with improved varieties. Without the introduction of more productive cultivars with multiple diseases and pest resistance, the effective biological control of the cassava mealybug and, to a certain extent, of the green mite, cassava production in SSA would be 50% or less of what it is today. That translates to over 13 million tons of dry cassava/year, enough to meet the calorie requirements of 65 million people. The significant gains in the crop's output in farmers' fields are not only contributing to the African diet but also propelling commercialization of the crop. This paper highlights contributions to cassava improvement in SSA since 1970 by IITA and its partners, and suggests areas needing strengthening in the drive to produce better crop varieties for different regions and enduses in Africa.
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| Challenges and lessons when using farmer knowledge in agricultural research and development projects in Africa, Van Asten, P., Kaaria, S., Fermont, A. and Delve, R. J., in: Experimental Agriculture, volume 45, number 1, pages 1-14, ISSN 0014-4797, 2009. [DOI] |
|
Abstract:
Farmer participatory research (FPR) approaches are now considered mainstream and are especially applicable for developing appropriate technology options in complex, diverse and risk-prone regions, where local adaptations are crucial. Although the advantages of using farmer knowledge to guide scientific research are numerous and well documented, the challenges and potential pitfalls that befall biophysical researchers, in particular, when using FPR approaches have received much less attention, especially in sub-Saharan Africa. Our experiences show that in certain cases, the methods used to collect farmer knowledge are flawed, leading to inaccurate or incomplete information being gathered. This potentially leads to the development and promotion of unsustainable, unprofitable or socially unacceptable technologies. This paper uses a series of examples to illustrate that discrepancies between farmer and researcher observations may occur because (i) farmers and scientists may not have sufficient insight into the systems complexity, (ii) farmers and scientists use different reference frameworks, and (iii) methodological errors may lead to farmers intentionally or unintentionally providing false or {\^a}??desired{\^a}?? information to achieve (short-term) benefits. This paper concludes by providing guidelines to improve the integration of farmer and scientific knowledge in order to develop appropriate technology options that are both environmentally sound and adaptable to local conditions
|
| Characterisation of resistance in cassava against viruses causing cassava mosaic and cassava brown streak disease in Africa, Koerbler, M., Stein, B., Ingelbrecht, I., Dixon, A. and Winter, S., 2008. |
|
Abstract:
Cassava mosaic disease caused by diverse geminiviruses (CMG) and Cassava brown streak disease caused by cassava brown streak virus (CBSV), are key constraints to the cultivation of cassava in Sub-Sahara Africa. We have collected and characterised the diversity of the most prominent geminiviruses from all African cassava cultivation areas and Cassava brown streak viruses from East Africa, to use defined viruses for resistance studies in selected IITA cassava breeding lines and African land races. Virus infections were established in cassava by either graft inoculation with scions of virus infected plants or, by particle bombardment of cloned infectious viruses. Resistance against cassava mosaic geminiviruses was identified in several breeding lines e.g. TME 4, TMS 96/0529 and TMS 96/0160 responding with abortion of virus infections after virus introduction. Other genotypes, e.g. TMS 96/0304, became infected but recovered from symptoms but maintaining the infection status. When cassava clones were analysed for CBSV resistance, it became evident that geminivirus resistance was tightly correlated with susceptibility against CBSV. Geminivirus resistant cassava responded with often severe CBSV infections (e.g. TMS 96/0160) upon virus inoculation. Interestingly, cassava genotypes with an intermediate resistance, TMS 96/0304, initially became mixed infected with CBSV/CMG however subsequently aborting CMG, to establish single CBSV infections. Differential responses were also recorded for strains of CBSV. While CMG resistance in cassava was against all CMG, differential responses were observed in cassava inoculated with CBSV isolates obtained from Kenya and Mozambique. While the CMG susceptible cassava landrace TME 117 was resistant against CBSV from Kenya, it became infected with CBSV from Mozambique. Only the cassava genotype TMS/ 1089A revealed immunity against CMG and also did not establish infections with the CBSV isolates from diverse origins.
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| Determinants of food demend among rural households in Borno state, Nigeria, Amaza, P. and Fregene, T.*, in: The Empirical Economics Letters, volume 7, number 6, pages 607-613, ISSN 1681-8997, 2008. |
|
Abstract:
This study uses a food consumption survey of rural households to examine the determinants of food demand in Borno State, Nigeria. The Linear- Approximate Almost Idea Demand System (LA/AIDS) model was used in analysis of data. Results showed that the income elasticities (expenditure) for animal protein and fat & oil are
positive but greater than one, while those of cereals, legumes, roots & tubers and vegetables & fruits were less than one but positive. The policy implication of this finding is that due to the high cost of animal protein, it is important to introduce new recipe of legume-based food in order to supplement protein intake.
|
| Developing a Nigerian-specific food and nutrient coding database, Day, R. S., Douglass, D. L. and Maziya-Dixon, B., in: Journal of Food Composition and Analysis, volume 21, pages S109-S114, 2008. |
|
Abstract:
A Nigerian-specific food and nutrient coding database was developed by adding Nigerian-specific foods, recipes, measure descriptions, and gram weights to information from the US Department of Agriculture (USDA) databases used for the 1994{\^a}€“1996, 1998 Continuing Survey of Food Intakes by Individuals. The Nigerian database was used to analyze intakes from the 2001 Nigerian Food Consumption and Nutrition Survey. The Food Intake Analysis System (FIAS) (developed by The University of Texas School of Public Health and the USDA Agricultural Research Services Food Surveys Research Group) and food and nutrient data from the USDA databases were used to aid creation of foods and recipes specific to Nigeria. USDA data had only 214 of the basic foods reported consumed by Nigerians. Researchers developed food descriptions and nutrient profiles for another 117 foods specific to Nigerian intake. An additional 14 foods
were created from ingredients in the USDA database. Complete profiles of 14 nutrients were included for every new food from food composition books and tables. A total of 422 recipes were created from the USDA and Nigerian foods using the nutrient retention factor recipe methodology and the FIAS software. Recipes were kitchen tested to obtain a weight before and after cooking, and the weight of a typical serving. It was necessary to add measure descriptions and gram weights to 359 USDA and 164 Nigerian foods. Development of this unique population-specific database of foods and recipes for this African country constitutes an important milestone for future diet and nutrition studies.
|
| Development of a semi-selective medium for isolating Xanthomonas camprestris pv. musacearum from insect vectors, infected plant material and soil, Mwangi, M., Mwebaze, M., Bandyopadhyay, R., Aritua, V.*, Eden-Green, S., Tushemereirwe, W. K.* and Smith, J., in: Plant Pathology, volume 56, number 3, pages 383-390, ISSN 0032-0862, 2007. |
|
Abstract:
A semiselective medium was developed for isolating Xanthomonas campestris pv. musacearum (Xcm) from infected banana plants, soil and insect vectors. The new medium was named cellobiose-cephalexin agar (CCA) and it contained (L{\^a}ˆ’1): 1 g yeast extract, 1 g glucose, 1 g peptone, 1 g NH4Cl, 1 g MgSO4{\"i}¿½7H2O, 3 g K2HPO4, 1 g beef extract, 10 g cellobiose, 14 g agar, 40 mg cephalexin, 10 mg 5-fluorouracil and 120 mg cycloheximide. The medium was evaluated for selectivity using 21 bacterial isolates and for plating efficiency using Xcm. The bacterial isolates included a soilborne Xanthomonas species and three pathogenic Xanthomonas strains that infect cassava, cabbage and beans. Although the plating efficiency of Xcm on CCA was lower (59%) than on non-selective yeast extract peptone glucose agar (YPGA), its selectivity was significantly higher, averaging 60 and 82%, when isolating from banana fruits and soil, respectively. CCA was also superior when isolating Xcm from insect vectors, with selectivity of 48-75%, compared with 8-17% on YPGA. Xanthomonas campestris pv. phaseoli did not grow on CCA, while X. campestris pv. campestris and X. axonopodis pv. manihotis grew, but their colonies were smaller than those of Xcm. Twenty-nine out of 33 suspected Xcm strains isolated from plants, soil and insects using CCA were pathogenic when inoculated onto banana plants, indicating that CCA can be a reliable tool in isolating Xcm populations. The medium should prove useful in studies on ecology, epidemiology and management of the banana bacterial wilt pathogen that is currently ravaging bananas in East and Central Africa.
|
| Efficiency of food production under old and new technology: the case of farmers within and outside the Extension Package Program in Ethiopia, Alene, A. and Hassan, R. M.*, in: Journal of Developing Areas, volume 41, number 2, pages 233-249, 2008. |
|
Abstract:
This paper measures the technical, allocative, and economic efficiencies of farmers within and outside the Extension Package Program (EPP) in high and low potential agro-ecological zones in eastern Ethiopia. Within-group farmer efficiencies are analyzed relative to respective technologies to examine performance variation under traditional and improved technology. The results showed considerable efficiency variation not only among farmers outside EPP who mainly used traditional technologies, but also among farmers within the EPP who used improved technological packages. The results further showed that, in the high potential zone, farmers within the EPP used a superior technology, whereas both groups in the low potential zone used a homogenous technology, confirming the lack of appropriate technologies for less-favored agricultural areas. Education, credit, and the share of the leading cropping system are significantly related to production efficiency. The results suggest that an integrated credit, extension, and input supply system with appropriate technologies would raise food production efficiency.
|
| Evaluation of application timing in fertilizer micro-dosing technology on millet producing in Niger, West Africa, Hayashi, K., Abdoulaye, T., Gerard, B.* and Bationo, A.*, in: Nutrient Cycling in Agroecosystems, volume 80, pages 257-265, 2008. [DOI] |
|
Abstract:
Micro-dosing technology has been developed
by the International Crops Research Institute for
the Semi-Arid Tropics (ICRISAT) and its partners to
help subsistence farmers in the Sahel improve inorganic
fertilizer application. However, the ICRISAT's
recommendations regarding fertilizer application
through this technology are only applicable at sowing
and do not allow any flexibility in terms of labor and/
or capital management. In rural areas, fertilizer cannot
always be applied at sowing due to financial and labor
constraints. The purpose of this study was to evaluate
the effect of the timing of fertilizer application on
millet production. A 2-year on-station experiment and
a 1-year on-farm field experiment were conducted in
the western region of Niger, West Africa. Even under
the heterogeneous climatic conditions of the region
during our experimental period, the results showed
that the trend was the same as observed in previous
studies: millet production improved through fertilizer
application compared to the control (without fertilizer).
The harvest index was also higher compared to
that of the control. This increased production was
consistently the same for all application timings. The
marginal value-cost ratio on the investment calculated
using a budgeting analysis for the on-farm
experiment showed that-regardless of application
timing-millet farmers who fertilized their fields with
inorganic fertilizer made more profit than those who
did not (control). This was also true for farmers who
were unable to fertilize at sowing-delayed application
was still the more profitable option relative to the
no fertilizer control. Our results indicate that small
subsistence farmers can be offered more options for
inorganic fertilizer application timing using the
micro-dosing technology. Delayed inorganic fertilizer
application can help small farmers who are often labor
constrained at the sowing period improve their yields
as well as their economic returns.
|
| Evaluation of water yam (Dioscorea alata L.) germplasm for reaction to yam anthracnose and virus diseases and their effect on yield, Egesi, C. N.*, Odu, B., Ogunyemi, S., Asiedu, R. and Hughes, J., in: Journal of Phytopathology, volume 155, number 9, pages 536-543, 2007. |
|
Abstract:
Use of genetic resistance is the most practical and economic way to manage major diseases of yams. In a search for sources of resistance, 40 water yam (Dioscorea alata L.) accessions from Benin, Ghana, Nigeria and Puerto Rico were screened under natural disease infection conditions in Ibadan, Nigeria. The accessions were evaluated at 1, 3 and 6 months after planting (MAP) for severity of yam anthracnose and viral diseases. The effect of the pathogens on yield was also evaluated at harvest 9 MAP. There were significant differences (P < 0.001) between accessions for severities of anthracnose and viral diseases. Eight (20%) of them had lower anthracnose area under disease progress curves (AUDPC) values than the resistant check while 10 (25%) had AUDPC values below the trial mean. There were significant variations (P < 0.001) in yield components among the accessions. There was significant negative correlation of anthracnose severity with fresh tuber yield (r = -0.51) and with number of tubers per plot (r = -0.40). Similarly, significant negative correlations were observed of virus disease severity with fresh tuber yield (r = -0.78) and number of tubers per plot (r = -0.65). Linear regression models also showed that the fresh yield had significant negative relationships with anthracnose (R2 = 0.26) and viral (R2 = 0.62) diseases. The accessions identified as resistant constitute a valuable resource for breeding of resistant germplasm.
|
| Exploration of the acarine fauna on coconut palm in Brazil with emphasis on Aceria guerreronis (Acari: Eriophyidae) and its natural enemies, Lawson-Balagbo, L. M., Gondim, M.*, De Moraes, G.*, Hanna, R. and Schausberger, P., in: Bulletin of Entomological Research, volume 98, pages 83-96, ISSN 0007-4853, 2008. [DOI] |
|
Abstract:
Coconut is an important crop in tropical and subtropical regions. Among the
mites that infest coconut palms, Aceria guerreronis Keifer is economically the most
important. We conducted surveys throughout the coconut growing areas of Brazil.
Samples were taken from attached coconuts, leaflets, fallen coconuts and
inflorescences of coconut palms in 112 localities aiming to determine the
occurrence and the distribution of phytophagous mites, particularly A. guerreronis,
and associated natural enemies. Aceria guerreronis was the most abundant
phytophagous mite followed by Steneotarsonemus concavuscutum Lofego & Gondim
Jr. and Steneotarsonemus furcatus De Leon (Tarsonemidae). Infestation by
A. guerreronis was recorded in 87% of the visited localities. About 81% of all
predatory mites belonged to the family Phytoseiidae, mainly represented by
Neoseiulus paspalivorus De Leon, Neoseiulus baraki Athias-Henriot and Amblyseius
largoensis Muma; 12% were Ascidae, mainly Proctolaelaps bickleyi Bram, Proctolaelaps
sp nov and Lasioseius subterraneus Chant. Neoseiulus paspalivorus and
N. baraki were the most abundant predators on attached coconuts. Ascidae were
predominant on fallen coconuts, while A. largoensis was predominant on leaflets;
no mites were found on branches of inflorescences. Leaflets harboured higher mite
diversity than the attached coconuts. Mite diversity was the highest in the state
Para' and on palms surrounded by seasonal forests and Amazonian rain-forests.
Neoseiulus paspalivorus, N. baraki and P. bickleyi were identified as the most
promising predators of A. guerreronis. Analyses of the influence of climatic factors
revealed that dry ambient conditions favour the establishment of A. guerreronis.
Neoseiulus paspalivorus and N. baraki have differing climatic requirements; the
former being more abundant in warm and dry areas, the latter prevailing in
moderately tempered and humid areas. We discuss the significance of our findings
for natural and biological control of A. guerreronis.
|
| First report of cucumber mosaic virus in yams (Dioscorea spp.) in Ghana, Togo and Republic of Benin in West Africa, Eni, A., Kumar, P. L., Asiedu, R., Alabi, O., Naidu, R.*, Hughes, J. and Rey, M.*, in: Plant Disease, volume 92, number 5, pages 833, ISSN 0191-2917, 2008. [DOI] |
|
Abstract:
Yam (Dioscorea spp., family Dioscoreaceae) is one of the most important food crops cultivated in the West African yam zone comprising the forest and savannah areas of Nigeria, Ghana, Cote d'Ivoire, Republic of Benin, and Togo, which account for more than 90% of the 4.59 million ha of yam cultivation worldwide (1). A survey was conducted in 2005 to document viruses in yams in Ghana, Togo, and the Republic of Benin. Samples (1,405) from five species of yam showing mosaic, chlorosis, and stunting as well
as asymptomatic plants were tested for Dioscorea bacilliform virus (DBV, genus Badnavirus), Yam mosaic virus (YMV, genus Potyvirus), and Yam mild mosaic virus (YMMV, genus Potyvirus), the three most common viruses infecting yams. In addition, samples were tested for Cucumber mosaic virus (CMV), since CMV was previously reported to infect yams in Cote d'Ivoire (2) and Nigeria (3). In protein-A sandwich-ELISA with polyclonal antibodies to a cowpea isolate of CMV, 23 of the 1,405 samples (6 of 218 samples from Togo, 13 of 628 samples from Ghana, and 4 of 559 samples from Republic of Benin) tested positive for CMV.
The CMV-positive samples were from D. alata (N = 16) and D. rotundata (N = 7), whereas all samples from D. cayenensis, D. dumetorum, and D. bulbifera tested negative. CMV was detected as mixed infections with DBV, YMV, or YMMV in 21 of 23 samples. Some of these samples showed puckering, chlorosis, mottling, and crinkling, whereas some plants infected by two or more viruses were asymptomatic. Only two samples from D. rotundata had a single infection of CMV and they showed mild chlorotic symptoms in young leaves that were inconspicuous in mature leaves. In sap inoculations, the virus induced systemic mosaic in
Nicotiana glutinosa. The presence of CMV in ELISA-positive yam samples was further confirmed by immunocapture-reverse transcription (IC-RT)-PCR using CMV antibodies as trapping antibody and oligonucleotide primers specific for a 485 nt corresponding to 3' end of the coat protein gene and C-terminal noncoding region of RNA-3 (4). To confirm the specificity of ICRT-PCR, the 485-bp amplicons from an isolate from the Republic of Benin was cloned into pCR2.1 (Invitrogen, Carlsbad, CA) and three independent clones were sequenced from both orientations. Pairwise comparison of a consensus sequence (Accession No. EU274471) with corresponding sequences of other CMV isolates deposited in GenBank showed 99% identity at the nucleotide sequence level (Accession No. U22821) and revealed that the CMV isolate from yam belongs to sub-Group IA. To our knowledge,
this is the first report of CMV infection in yams (D. alata and D. rotundata) in Ghana, Togo, and the Republic of Benin. Together with a previous documentation of CMV in D. alata and D. trifida in Cote d'Ivoire and Nigeria (2,3), this report adds to existing knowledge on distribution of CMV in yams with implications for yam production and germplasm distribution in the West Africa Region.
|
| Fruit characteristics and ripening pattern of ten Musa genotypes in a sub-humid environment in Nigeria, Baiyeri, K. and Tenkouano, A., in: Fruits, volume 63, number 1, pages 3-9, 2008. |
|
Abstract:
Introduction. Conventional evaluation of Musa through multilocation trials has
often been carried out to ascertain the yield stability and ecological range of new varieties but, for prospective growers, it is equally important to know the fruit characteristics and ripening pattern of the genotypes. Indeed, fruit characteristics determine consumers' attitudes towards the new varieties, and the associated market value of these varieties. Materials and methods. The metric traits and ripening pattern of fruits from nine Musa hybrids and one local variety of plantain were evaluated during two cropping seasons in a sub-humid environment in Nigeria. Results. All the traits measured varied with the genotype, but cropping cycle influenced only fruit weight and days to complete senescence of fruits. The interaction between genotype and cropping cycle was significant on fruit weight, fruit length and days to attain four different ripening stages. Most genotypes had better values in the ratoon harvest than in the plant crop. Fruit length and shape of PITA 21 were comparable with those of the local check, but the index of edible proportion was highest in PITA 22. PITA 21 and PITA 26 had the longest green life and total shelf life. Conclusion. The genotypes evaluated in our study revealed different utilization potentials. Also, the better postharvest life of some of the hybrids and comparable metric traits with the local check suggested the high adoption potential of the hybrids.
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| Genetic gains from 30 years of cassava breeding in Nigeria for storage root yield and disease resistance in elite cassava genotypes, Okechukwu, R. and Dixon, A., in: Journal of Crop Improvement, volume 22, number 2, pages 181-208, 2008. |
|
Abstract:
Cassava (Manihot esculenta Crantz) is crucial for both food security and poverty alleviation in Sub-Saharan Africa (SSA). Cassava improvement for SSA started at the International Institute of Tropical Agriculture in 1970, and several improved lines with different characteristics have been developed to date. The primary focus of breeding work has been to increase root yield, early bulking, tolerance to biotic and abiotic stresses, and increased dry matter content. This paper represents a study of 112 varieties cloned and introduced between 1970 and 2000, and
evaluated in 2003 and 2004 to quantify genetic gains in root yield and disease resistance. The genetic gain per year was 1.3% for fresh root yield, 1.2% for dry root yield, 0.65% for cassava mosaic disease resistance, 0.21% for cassava anthracnose disease resistance, and -0.03% for cassava bacterial blight disease resistance. Though there was no statistical significance in the net negative genetic gain in cassava bacterial blight resistance, it is essential that more emphasis be placed on improving this trait to enhance stability and productivity in African environments.
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| Genetic transformation of cassava - independent of genotype, Jorgensen, K., Ingelbrecht, I., Jensen, S., Olsen, E., Sorensen, C., Kannangara, R. and Moller, B., 2008. |
|
Abstract:
Cassava is a vegetatively propagated crop and its improvement through conventional breeding is challenging due to its high heterozygosity and low fertility. As it has not been possible to solve all cassava's problems connected to agriculture and consumption by traditional breeding, another solution could be to use molecular breeding. Major deficits of cassava are low protein content in the tubers, rapid post-harvest tuber deterioration and high content of cyanogenic glucosides. Careful processing of cassava roots is required to remove the released hydrogen cyanide which can cause acute or chronic cyanide intoxication. Unfortunately, processing to remove hydrogen cyanide typically results in loss of protein, minerals, and vitamins. For successfull molecular breeding of cassava, a genotype-independent genetic transformation method is essential. So far it has only been possible to transform model lines which have limited agricultural importance. Here a regeneration and transformation method is presented which has been successfully applied to all African varieties tested so far with a transformation frequency ranging from 0.2% to 3.8%. The method is based on the procedure developed by Li et al. (1996). This method is among others now used to 1) produce acyanogenic cassava (J{\o}rgensen et al 2005), 2) improve the nutritional value in the tubers, 3) virus resistance. The improvement of the nutritional value is focused on increasing the protein content in the tubers in varieties with and without a naturally increased levels of pro-vitamin A.
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| Highly client-oriented breeding with farmer participation in the Ethiopian cereal tef (Eragrostis tef (Zucc.) Trotter), Tefera, H., Belay, G.*, Assefa, K.* and Metaferia, G.*, in: African Journal of Agricultural Research, volume 3, number 1, pages 022-028, 2008. |
|
Abstract:
This paper describes a highly client-oriented breeding applied to enhance the development and release of a tef (Eragrostis tef) variety with farmer participation in Ethiopia. The main features include; clear objective, target cross, early-stage researcher selection, multi-location yield trial, farmer on-station selection, judicious selection of few candidate varieties based on farmers' and researchers' selections,
farmer managed on-farm trials, and release through the existing formal procedure. In the application of this strategy, tef exemplifies a crop with local importance, a clear market-driven selection criterion (cash crop) and farmers have better judgment of the criterion than researchers. Using farmers' consistent selection of genotypes, in conjunction with the required quantifiable data, breeders were able to release a new tef variety named ''Quncho''. The new variety was not the highest yielder, but it
was higher in grain yield and better in seed-color quality (very white seed-color) than the long-time cultivated variety DZ-01-196 (Magna), which was used as quality check. Given the appropriate degree of client-orientation, the results also show how farmer participation and formal breeding programs complement each other so as to overcome the rather prohibitive variety release procedures based on
data from participatory breeding alone.
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| Host plant odours enhance the responses of adult banana weevil to the synthetic aggregation pheromone Cosmolure+, Tinzaara, W., Gold, C., Dicke, M., Van Huis, A. and Ragama, P., in: International Journal of Pest Management, volume 53, number 2, pages 127-137, ISSN 0967-0874, 2007. |
|
Abstract:
Attraction of adult banana weevil, Cosmopolites sordidus to volatiles from banana pseudostem tissue and the synthetic pheromone Cosmolure+ presented singly or in combination, was studied in the laboratory and in the field. Olfactometric studies in the laboratory showed that 50 g of fermented banana pseudostem tissue was as attractive as pheromone but more attractive than 50 g of fresh pseudostem tissue. In the laboratory, volatiles from pseudostem tissue had an additive effect on attraction of weevils to the pheromone but the effect was not significant in the field. Field trials, however, showed that attractiveness to weevils was positively correlated with the amount of fermented tissue added to the pheromone. The results indicate that fresh or fermented pseudostem tissue may enhance pheromone trap catches but the effect was not large enough to warrant their deployment for the optimisation of the infochemical-based trapping system for the management of C. sordidus.
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| Identification and validation of EST-derived microsatellites for genome analyses of cassava (Manihot esculenta Crantz) and related taxa in the Euphorbiaceae, Raji, A., Kolade, O., Anderson, J., Ugwu, C. D., Gedil, M., Dixon, A. and Ingelbrecht, I., 2008. |
|
Abstract:
Using bioformatics tools, we identified 646 Simple Sequence Repeats (SSRs) in silico from a unigene set of 8,577 Expressed Sequence Tags (ESTs) in cassava for the development of genic microsatellite markers. A total of 346 primer pairs were designed. Of these, 96 primer pairs were tested for polymorphism among diverse, cultivated genotypes of cassava (M. esculenta) from Africa and South America and three wild species. The cassava array comprised landraces as well as elite lines, five of which have previously been used as parents of mapping populations. Ninety percent of the primers amplified DNA fragments. Candidate EST-SSRs were analyzed on high resolution agarose gels and on ABI 3100 Genetic Analyzer. The number of alleles ranged from 1 to 8 which is lower compared to microsatellites derived from genomic sources. Approximately 80% of the microsatellites detected only one or two alleles per accession indicating a low degree of duplicated loci, a surprising finding for a highly heterozygous species such as cassava. Several markers showed cross-genus amplification across castor bean (Ricinus communis) and leafy spurge (Euphorbia esula), thus showing transferability from cassava to other taxa of the Euphorbiaceae. This study provides an in-depth view of the frequency of microsatellites in the cassava transcriptome, demonstrates the successful development of genic SSRs, and also indicates that available EST and genomic resources of leafy spurge and castor bean can be utilized for microsatellite marker development in cassava.
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| Identifying aflatoxin resistance-related proteins/genes through proteomics and RNAi gene silencing, Chen, Z. Y., Brown, R., Guo, B. Z., Menkir, A. and Cleveland, T. E., in: Peanut Science, volume 36, number 1, pages 35-41, ISSN 0095-3679, 2009. |
|
Abstract:
Aflatoxins are carcinogenic secondary metabolites
produced mainly by Aspergillus flavus Link ex. Fries, and A. prarasiticus Speare during infection of susceptible crops, such as maize, cottonseed, peanuts and tree nuts. This paper will review research efforts in identifying aflatoxin resistance-related proteins/genes in maize. Similar strategies may be useful in peanut. For maize, although genotypes resistant to A. flavus infection or aflatoxin production have been identified, the incorporation of resistance into commercial lines has been slow due to the lack of selectable markers
and poor understanding of host resistance mechanisms. Recently, resistance-associated proteins (RAPs) were identified through proteomic comparison of constitutive protein profiles between
resistant and susceptible maize genotypes. These
proteins belong to three major groups based on
their peptide sequence homologies: storage proteins, stress-related proteins, and antifungal proteins. Preliminary characterization of some of
these RAPs suggest that they play a direct role in
host resistance, such as pathogenesis-related
protein 10 (PR10), or an indirect role, such as
glyoxalase I (GLX I), through enhancing the host
stress tolerance. To verify whether these RAPs
play a role in host resistance, RNA interference
(RNAi) gene silencing technique was used to
silence the expression of these genes in maize.
RNAi vectors (glx I RNAi and pr10 RNAi) were
constructed using Gateway technology, and then
transformed into immature maize embryos using
both bombardment and Agrobacterium infection.
The extent of gene silencing in transgenic callus
tissues ranged from 20% to over 99%. The RNAi
silenced transgenic maize seeds have also been
obtained from plants regenerated from Agrobacterium transformed callus lines. Kernel screen assay of the transgenic maize kernels demonstrated a significant increase in susceptibility to A. flavus colonization and aflatoxin production in
some of the silenced transgenic lines compared
with non-silenced control kernels, suggesting the
direct involvement of these two proteins in
aflatoxin resistance in maize.
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| Influence of phosphorus application on growth and yield of soybean genotypes in the tropical savannas of northeast Nigeria, Kamara, A., Abaidoo, R., Kwari, J.* and Omoigui, L., in: Archives of Agronomy and Soil Science, volume 53, number 5, pages 539-552, 2007. |
|
Abstract:
The cultivation of soybean is increasing in the savannas of Nigeria due to its widespread use in the food and feed industry. Production is, however, constrained by low soil phosphorus (P) levels in northeast Nigeria. This study evaluated four soybean varieties for their response to three rates of P in two agro-ecozones in 2004 and 2005. Experimental design was a split-plot arrangement of treatments with three replications. The main plots were assigned the P treatments and subplots were soybean cultivars randomised within the main plots. The studies found that soybean responds to P application but differences between 20 and 40 kg P/ha were not significant, despite low test P levels. This may be due to limitations in other nutrients. More studies are needed to determine the synergistic effect of P and other nutrients on soybean growth and yield. Soybean growth and seed yield were lower in 2004 than in 2005 because trials were established comparatively late in 2004 and crops were therefore affected by late season moisture stress. There is, therefore, a need to establish the appropriate time for planting soybean in these zones. Late maturing varieties produced higher yields than early maturing varieties in 2005 probably due to early planting which allowed full use of the growing season.
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| Insecticide dissipation from soil and plant surfaces in tropical horticulture of southern Benin, West Africa, Rosendahl, I., Laabs, V., Atcha-Ahove, C.*, James, B. and Amelung, W., in: Journal of Environmental Monitoring, volume 11, pages 1157-1164, ISSN 1464-0325, 2009. |
|
Abstract:
In Sub-Saharan Africa, horticulture provides livelihood opportunities for millions of people, especially in urban and peri-urban areas. Although the vegetable agroecosystems are often characterized by intensive pesticide use, risks resulting therefrom are largely unknown under tropical horticultural conditions. The objective of this study therefore was to study the fate of pesticides in two representative horticultural soils (Acrisol and Arenosol) and plants (Solanum macrocarpon L.) after field application and thus to gain first insight on environmental persistence and dispersion of typical insecticides used in vegetable horticulture in Benin, West Africa. On plant surfaces, dissipation was rapid with half lives
ranging from 2 to 87 h (a-endosulfan < b-endosulfan < deltamethrin). Soil dissipation was considerably slower than dissipation from plant surfaces with half-lives ranging from 3 (diazinon) to 74 d (total endosulfan), but persistence of pesticides in soil was still reduced compared to temperate climates. Nevertheless, for deltamethrin and endosulfan, a tendency for mid-term accumulation in soil upon repeated applications was observed. The soil and plant surface concentrations of the metabolite endosulfan sulfate increased during the entire trial period, indicating that this compound is a potential
long-term pollutant even in tropical environments.
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| Mycoflora and natural occurrence of aflatoxins and fumonisin B1 in cassava and yam chips from Benin, West Africa, Gnonlonfin, B.*, Hell, K., Fandohan, P.* and Siame, A. B.*, in: International Journal of Food Microbiology, volume 122, number 1-2, pages 140-147, 2008. |
|
Abstract:
The presence of fungi, aflatoxins and fumonisin B1 in cassava and yam chips (during 28 processing and storage) were evaluated during two consecutive seasons in two agroecological zones of Benin (Northern Guinea Savannah, NGS and Sudan Savannah, SS). The Benin samples were assessed for moisture content, fungal infestation and total aflatoxin and fumonisin B1 contamination. During the two seasons, samples collected from the NGS, had moisture contents ranging from 10.0 to 14.7% in cassava chips and from 11.4 to 15.3% in yam chips. In samples from the SS, moisture content ranged from 10.1 to 14.5% and 11.1 to 14.5% in cassava and yam chips, respectively. A. flavus was the predominant fungal species. The maximum cfu/g in cassava and yam chips was 8950 and 6030, respectively. Other fungal species isolated included P. chrysogenum, M. piriformis, Phoma sorghina, F. verticillioides, R. oryzae and Nigrospora oryzae. High performance liquid chromatography analysis of both cassava and yam chips showed no contamination by either aflatoxins or fumonisin B1.
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| Novel sources of resistance to Fusarium stalk rot of maize in tropical Africa, Afolabi, C., Ojiambo, P., Ekpo, E.*, Menkir, A. and Bandyopadhyay, R., in: Plant Disease, volume 92, number 5, pages 772-780, ISSN 0191-2917, 2008. |
|
Abstract:
Fusarium stalk rot is one of the most widespread and destructive diseases of maize, and deployment of resistant genotypes is one of the most effective strategies for controlling the disease. Fifty inbred lines and four checks from the breeding program of the International Institute of Tropical Agriculture were evaluated in field trials at Ikenne and Ibadan, Nigeria in 2003 and 2004 to identify new sources of resistance to stalk rot caused by Fusarium verticillioides. Evaluations were conducted under artificial inoculation and natural infection at Ibadan and Ikenne, respectively. Disease severity was recorded using a severity scale (SS) and direct estimation of stalk discoloration (SD). The two methods of disease assessment were compared and combined to classify genotypes into resistance groups using results from rank-sum analysis. In 2003, disease severity ranged from SS = 1 to 5 and SD = 1.3 to 33.8% at both locations. Both SS and SD were significantly (P < 0.01) higher in 2003 than in 2004 at the two locations. In both years, inbred lines significantly differed in SS (P < 0.02) and SD (P < 0.04) at Ibadan. Similarly, inbred lines significantly differed in SS (P < 0.04) and SD (P < 0.04) when genotypes were evaluated at Ikenne. Disease assessments based on SS and SD were significantly correlated (0.68 < r < 0.95, P < 0.01) in both years. Based on the results from rank-sum analysis, inbred lines were separated into highly resistant, resistant, moderately resistant, moderately susceptible, susceptible, and highly susceptible groups. At Ibadan, 6 (11.1%) and 8 (14.8%) were identified as highly resistant and resistant, respectively, whereas 11 (20.4%) were identified as resistant at Ikenne. Inbred lines 02C14609, 02C14643, 02C14654, and 02C14678 were consistently classified as either highly resistant or resistant to stalk rot across locations and years while the check genotypes were classified either as susceptible or moderately susceptible to stalk rot. These four inbred lines identified to have high levels of disease resistance may be used for breeding maize with resistance to Fusarium stalk rot.
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| Perception of farmers in Benin, West Africa to Imperata cylindrica, Ayeni, S., Avocanh, A. and Beed, F., in: Proceedings of the 4th International Weed Science Congress, 20-24th June, Durban, South Africa, pages 45, 2004. |
|
Abstract:
Questionnaires and sampling techniques were developed to assess the
distribution, problems caused by, and the efficacy of control methods for
Imperata cylindrica (L.) Raeuschel. One hundred farmers were interviewed
from each of the three agro-ecological zones of Benin. These differ in climate,
especially annual rainfall, and in crops cultivated. I. cylindrica was the most
serious weed in the high and medium rainfall zones but was less prevalent in
the arid zone. In all zones, the recent intensification of agricultural land use
caused a reduction in the use of fallow and cover crops, resulting in increased
incidence and severity of I. cylindrica. Significant yield losses due to I.
cylindrica infestation were reported for all crops, including cassava, cotton,
cowpea, maize, millet, peanut, sorghum, and yam. Furthermore, the
clearance of vegetation by “slash and burn” agriculture encouraged rapid leaf
growth from rhizomes to create dense stands of I. cylindrica that virtually
eliminated other species. Such areas were frequently abandoned because
existing control methods were ineffective. Weeding by hand caused cuts due
to sharp leaf margins and leaf tips occasionally caused injury leading to
blindness. Frequent ploughing can break rhizome sections into pieces
sufficiently small to avoid plant regeneration, but was considered too time and
labour intensive. Of the 300 farmers surveyed, none used chemical
herbicides, due to high cost. This study showed the need to develop
sustainable methods of I. cylindrica control for resource poor farmers.
|
| Phytoseiid mites of the tribe Paraseiulini Wainstein (Acari: Phytoseiidae) from sub-Saharan Africa, De Moraes, G.*, Zannou, I., Ueckermann, E.*, Oliveira, A.*, Hanna, R. and Yaninek, J., in: Zootaxa, volume 1687, pages 1-34, ISSN 1175-5326, 2008. |
|
Abstract:
This is the eighth publication of a series on the determination of phytoseiid mites of sub-Saharan Africa. Twenty-three phytoseiid species of the tribe Paraseiulini Wainstein are reported in this paper. They refer to all species of this tribe known to occur in sub-Saharan Africa. Six of these species are described for the first time and 13 species are redescribed. Most of the reported species were collected in cassava habitats in tropical Africa and in other habitats in South Africa. A key is included to help in the separation of the species treated in this paper.
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| Prospects for cassava breeding in sub-Saharan Africa in the next decade, Dixon, A. and Ssemakula, G., in: Journal of Food, Agriculture and Environment, volume 6, number 3&4, pages 132-138, ISSN 1459:0255, 2008. |
|
Abstract:
Cassava is an appropriate commodity to feature in Africa's future economic development. As the crop rapidly changes from a basic foodstuff to a source of income and employment for rural populations, there is a parallel need to increase productivity, marketing opportunities and profitability. This calls for development and/or the introduction of technologies that will drive down costs of production, harvesting, processing and marketing to make cassava competitive with other raw materials and improve the quantity and quality of cassava products for diversified uses. The development and delivery/promotion of productivity-enhancing technologies and adding value will attract urban consumers and industries, create demand, stimulate increased production and provide more income for producers, processors and traders. This paper highlights prospects for cassava breeding in sub-Saharan Africa in the next decade with a view to meeting these challenges.
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| Reproductive efficiency and breeding potential of East African highland (Musa AAA-EA) bananas, Ssebuliba, R., Talengera, D., Makumbi, D., Namanya, P., Tenkouano, A., Tushemereirwe, W. K.* and Pillay, M., in: Field Crops Research, volume 95, number 2-3, pages 250-255, 2006. |
|
Abstract:
The East African highland banana (Musa spp. AAA) is an economically important food crop. The crop is affected by a number of diseases and pests. Genetic improvement of the crop is hindered by very low seed set and poor seed germination. The objective of this study was to compare seed set, seed quality and embryo rescue rates of hybrid seeds obtained from 20 East African highland banana cultivars crossed with a fertile diploid species, Musa acuminata spp. burmannicoides 'Calcutta 4', as a male parent. There was great variation in seed set, seed quality and in vitro embryo germination rates among the cultivars. Although 72% (range = 47-88%) of the seeds appeared normal externally characterized by black hard integuments, only 59% (range = 35-81%) contained embryos, of which 9% (range = 0-22%) germinated. This study demonstrated that hard-seeded-ness alone does not signify the presence of an embryo and should not be regarded as a measure of seed fertility in East African highland bananas. Cultivars 'Entukura', 'Enzirabahima' and 'Kabucuragye' of the 'Nfuuka' clone set were superior in terms of seed set, presence of seeds with embryos and culturability of embryos. These cultivars are recommended as female parents for a crossing program in the improvement of East African highland bananas. The low embryo rescue rates suggest that hybrid seeds derived from East African highland banana possess factors that cause high embryo abortion. This may be ascribed to endosperm breakdown, which can release toxins.
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| Responding to food supply shocks through global partnerships in technology development and transfer: the case of the IITA-led biological control of cassava mealybug in sub-Saharan Africa, Alene, A., Manyong, V. and Coulibaly, O., in: Outlook on Agriculture, volume 35, number 4, pages 255-261, ISSN 0030-7270, 2006. |
|
Abstract:
Partnerships involving national agricultural research systems (NARS), the Consultative Group on International Agricultural Research (CGIAR), universities, advanced research institutes, the private sector, civil society, non-governmental organizations, farmer organizations and international investors represent a global capacity to provide solutions to strategic problems and to fulfil the overall objective of combating rural poverty and food insecurity. Drawing on the experiences and achievements of the IITA-led biological control of the cassava mealybug in Sub-Saharan Africa, this paper gives an account of the role of global partnerships in technology development and transfer in addressing food security challenges. It concludes with implications for national and international agricultural research centres for an efficient, demand-driven technology development and delivery.
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| Screenhouse and field persistence of nonpathogenic endophytic Fusarium oxysporum in Musa tissue culture plants, Paparu, P., Dubois, T., Gold, C., Adipala, E.*, Niere, B. and Coyne, D., in: Microbial Ecology, volume 55, number 3, pages 561-568, ISSN 1432-184X, 2008. |
|
Abstract:
Two major biotic constraints to highland cooking banana (Musa spp., genome group AAA-EA) production in Uganda are the banana weevil Cosmopolites sordidus and the burrowing nematode Radopholus similis. Endophytic Fusarium oxysporum strains inoculated into tissue culture banana plantlets have shown control of the banana weevil and the nematode. We conducted screenhouse and field experiments to investigate persistence in the roots and rhizome of two endophytic Fusarium oxysporum strains, V2w2 and III4w1, inoculated into tissue-culture banana plantlets of highland cooking banana cultivars Kibuzi and Nabusa. Re-isolation of F. oxysporum showed that endophyte colonization decreased faster from the rhizomes than from the roots of inoculated plants, both in the screenhouse and in the field. Whereas rhizome colonization by F. oxysporum decreased in the screenhouse (4-16 weeks after inoculation), root colonization did not. However, in the field (17-33 weeks after inoculation), a decrease was observed in both rhizome and root colonization. The results show a better persistence in the roots than rhizomes of endophytic F. oxysporum strains V2w2 and III4w1.
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| Screening landraces for additional sources of field resistance to Cassava Mosaic Disease and green mite for integration into the Cassava Improvement Program, Raji, A., Ladeinde, O.* and Dixon, A., in: Journal of Integrative Plant Biology, volume 50, number 3, pages 311-318, 2008. |
|
Abstract:
Twelve cassava landraces were evaluated for sources of resistance genes to diseases and pests of major economic importance in Africa. The objective was to assess their levels of field resistance to mosaic disease (ACMD), bacterial blight (CBB), anthracnose (CAD), and green mite (CGM), compared to TMS30572, an elite cultivar widely adopted in Africa. Considerable genotypic variation was observed among cultivars for resistance to ACMD and CGM but not for CBB and CAD. The lowest mean incidence of 12% and severity of 1.8 on a scale of 1-5 for ACMD was recorded for Atu, a landrace with farmer acceptable qualities. In comparison, the improved cultivar, TMS 30572, had a mean disease incidence of 72% and a severity score of 2.8. Another landrace, MS-20 had the lowest CGM damage score (2.1) while TMS 30572 emerged as one of the susceptible cultivars with a damage score of 3. Additional sources of resistance to ACMD and CGM that may possibly be better than the popular improved cultivar, TMS 30572, were identified in this study. These could serve as novel sources of additional genes to complement existing resources for elite cassava breeding in Africa.
|
| Severity of anthracnose and virus diseases of water yam (dioscorea alata L.) in NIgeria I: effects of yam genotype and date of planting, Egesi, C. N.*, Onyeka, T. and Asiedu, R., in: Crop Protection, volume 26, number 8, pages 1259-1265, ISSN 0261-2194, 2007. |
|
Abstract:
Anthracnose and virus diseases exert devastating impacts on yam production in many tropical regions of the world where the crop contributes to food security and income generation. The complexities in their epidemiology necessitate the use of integrated approaches in their management. Six genotypes of Dioscorea alata, planted on six dates (March?August) in each of 1998 and 1999 in Ibadan, Nigeria, were evaluated to determine the effects of planting date and genotype on severity of the two diseases. The date of planting had a profound influence on anthracnose severity, contributing 72% of the observed variation due to combined effects of planting date, genotype and their interactions. In contrast, the genotype effect was most dominant with respect to virus severity, accounting for 85% of the total observed variation. Planting in August supported least anthracnose development while April and May plantings resulted in the least severity of virus diseases. While selection of planting time could be used to manage anthracnose disease, its application could be influenced by the prevailing weather conditions in a particular location. Two of the genotypes (TDa 291 and TDa 297) had low severity values for both diseases across the different planting dates. Availability of such sources of multiple disease resistance and appropriate choice of planting date would be very useful in integrated management of the two major yam diseases.
|
| Sink competition and desuckering effects on field performance of triploid and tetraploid plantain genotypes, Tenkouano, A., Vuylsteke, D. and Swennen, R.+, in: Journal of Crop Improvement, volume 20, number 1/2, pages 31-51, 2007. [DOI] |
|
Abstract:
Reproductive growth in polyarchic Musa spp. varieties occurs by the simultaneous growth of several shoots, resulting in competitive inhibition of fruit development in the individual shoots, particularly under poor soil fertility conditions. Nine plantain genotypes were forced into single-culm growth by continuous sucker removal in the ratoon crop (RC). There were no significant differences among genotypes for days to flowering (DTF) and days to harvest (DTH) in the plant crop (PC), but significant differences occurred in RC for both traits. There was a negative correlation between degree of sucker growth in the PC and DTF or DTH in RC, indicating that early flowering and maturity in the RC occurred as a result of fast sucker development in the PC. Likewise, bunch weight in the RC was positively correlated with sucker growth in the previous crop. However, sucker growth appeared to compete against the development of the bunch in the PC, resulting in a significant reduction in fruit size but not fruit number. Desuckering significantly reduced DTF and DTH in the RC. Bunch weight and fruit size were significantly improved by sucker removal in the RC. Gains were highest for genotypes that normally produce multiple lateral shoots and lowest for those displaying a more hierarchical growth habit. Thus, sucker removal could be recommended as a crop management option for the polyarchic Musa genotypes.
|
| Smallholder market participation under transactions costs: maize supply and fertilizer demand in Kenya, Alene, A., Manyong, V., Omanya, G.*, Mignouna, H., Bokanga, M. and Odhiambo, G. D.*, in: Food Policy, volume 33, pages 318-328, ISSN 0306-9192, 2008. [DOI] |
|
Abstract:
This paper assessed the effects of transactions costs—relative to price and non-price factors—on smallholder marketed surplus and
input use in Kenya. A selectivity model was used that accounts for the effects of transactions costs, assets, technology, and support services
in promoting input use and generating a marketable surplus. Output supply and input demand responses to changes in transactions
costs and price and non-price factors were estimated and decomposed into market entry and intensity. The results showed that while
transactions costs indeed have significant negative effects on market participation, institutional innovations—such as group marketing
—are also emerging to mitigate the costs of accessing markets. Output price has no effect on output market entry and only provides
incentives for increased supply by sellers. On the other hand, both price and non-price factors have significant influence on adoption and
intensity of input use. Overall, the findings suggest that policy options are available other than price policies to promote input use and
marketed surplus. The paper concludes with implications for policy to induce greater input–output market participation among smallholders
in Africa.
Keywords: Commercialization; Kenya; Africa
|
| Somatic embryogenesis and genetic transformation of African farmer-grown cassava genotypes that are susceptible to the Cassava Brown Streak Disease, Ingelbrecht, I., Raji, A., Oyelakin, O., Winter, S., Moller, B., Dixon, A. and Jorgensen, K., 2008. |
|
Abstract:
Cassava is one of the most important sources of carbohydrates for over 500 million people in the (sub)tropics. Cassava plays an important role in the food security of many developing nations, especially in sub-Saharan Africa (SSA). Cassava is highly heterozygous, genetically complex, and many varieties either do not flower or produce few seeds thus hampering conventional crop improvement. Several major constraints limit the production and utilization of cassava roots, including two viral diseases, the Cassava Brown Streak Disease (CBSD) and the Cassava Mosaic Disease (CMD), which are specific to SSA. Farmer-preferred landraces are often susceptible to CBSD and/or CMD. Genetic transformation of cassava could complement conventional breeding programs for CBSD and/or CMD resistance. Current protocols for genetic transformation of cassava are limited to model genotypes which are not used by farmers of breeders in SSA. Since transformation protocols are genotype-dependent, suitable procedures for genetic modification of the landraces need to be developed. We have established somatic embryogenesis and organogenesis for three farmer/breeder-preferred varieties, two from East Africa (cv Kibaha and cv Albert) and one from West Africa (TME12) which are susceptible to CBSD. Primary and cyclical somatic embryogenesis was established for the three varieties. Cotyledon tissues from somatic embryos were used as source explants for Agrobacterium-mediated genetic transformation. Using an intron-interrupted {\^a}{\"i}¿½glucuronidase reporter gene construct under control of the Cassava vein mosaic virus promoter, stably transformed cassava tissues and plants were obtained. Molecular evidence for stable expression of the transgenes will be presented.
|
| Soybean maturity and environmental effects in savanna systems; I: dry matter accumulation, Singh, A.*, Carsky, R., Lucas, E. O.* and Dashiell, K., in: Journal of Sustainable Agriculture, volume 20, number 1, pages 75-93, 2002. |
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Abstract:
Growing soybean varieties with high residue yield may help to sustain the soil organic matter (SOM) content when recycled. Replicated field trials were conducted in four Guinea savanna sites in Nigeria
to study the dry matter partitioning in six soybean genotypes and evaluate them for biomass production. The varieties were early TGx1485-1D
and late TGx1670-1F in Trial 1 and early TGx1485-1D, TGx1805-2E and TGx1681-3F, medium TGx1809-12E and late TGx923-2E and TGx1670-1F in Trial 2. On average, the proportion of total dry matter ac-cumulated in soybean plant parts was 42% in grain, 36% in stover, 12% in leaf litter and 11% in roots and nodules. While maturity class had no significant effect on the grain yield of soybean, significantly higher dry matter accumulation of roots and nodules, leaf litter, and stover was observed in medium and late varieties compared with early varieties (P < 0.05). Thus, medium and late varieties would be better able to sustain the
SOM content than early varieties when the residues are recycled. Strongly acid soils in a high rainfall environment limited soybean biomass production and potential to maintain SOM.
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| The effect of genotype, location and season on cassava starch extraction, Benesi, I.*, Labuschagne, M.*, Herselman, L.*, Mahungu, N. and Saka, J., in: Euphytica, volume 160, pages 59-74, 2008. [DOI] |
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Abstract:
When cassava is harvested too early, it
often leads to reduction in yield, while delayed
harvest leads to development of woody and fibrous
tuberous roots, and reduction in starch content. The
optimum harvest time is not known. The objectives of
this study were to determine the effect of genotype,
location and season on starch extraction in order to
find an optimum harvest regime for cassava, and to
find the best parameter for monitoring starch levels in
cassava tuberous roots. Results showed that genotypic
effect was large for starch weight, starch
extraction rate on fresh weight basis, and root dry
matter content. This suggested that high starch
weights could be realised by selection of suitable
varieties for starch extraction. It was found that
cassava harvesting and starch extractions should be
done between October and November since the
highest starch extraction rates were achieved during
that period, and drying of the extracted starch using
the open air method was fast and convenient. The
results also suggested that starch levels can efficiently
be monitored using starch extraction rate on fresh
root weight basis. Starch content on fresh root basis
and root dry matter content can also be used to
determine the optimum time to harvest cassava for
starch extraction but were inferior to starch extraction
on fresh root weight basis.
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| The impact of agricultural research on productivity and poverty in sub-Saharan Africa, Alene, A. and Coulibaly, O., in: Food Policy, volume 34, number 2, pages 198-209, ISSN 0306-9192, 2009. |
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Abstract:
While it is widely recognized that agricultural research is a key driver of broad-based technological change in agriculture that benefits the poor in many different ways, little is known about its aggregate impacts on productivity growth and poverty reduction in sub-Saharan Africa (SSA). Using a polynomial distributed lag structure for agricultural research within a simultaneous system of equations framework,this paper first demonstrates that agricultural research contributes significantly to productivity growth in SSA. Productivity growth is again shown to raise per capita incomes, with income increases finally having significant poverty-reducing effects. With an aggregate rate of return of 55%, the payoffs to agricultural research are also impressive. Agricultural research currently reduces the number of poor by 2.3 million or 0.8% annually. While the actual impacts are not large enough to more than offset the poverty-increasing effects of population growth and environmental degradation, the potential impacts of agricultural research are far greater. Apart from low research investments, SSA faces several constraints outside the research system that hinder realization of potential research benefits. The results show that doubling research investments in SSA would reduce poverty by 9% annually. However, this would not be realized without more efficient extension, credit, and input supply systems.
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| Use of Alternaria eichhorniae to control the invasive aquatic weed water hyacinth in Africa, Avocanh, A., Senouwa, V., Diogo, R. and Beed, F., in: Proceedings of the 8th International Congress for Plant Pathology, Christchurch, New Zealand, 2-7 February, pages 52, 2003. |
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Abstract:
Water hyacinth has been given the dubious honour by the UN of the
world’s most troublesome weed. Since its introduction as an ornamental
it has attained a pan-African distribution. It prevents transport, fishing,
commerce, the generation of hydroelectricity and increases incidences of
malaria, bilharzia, filariasis and encephalitis. We are studying the
potential of using a fungal pathogen as an environmentally friendly
method of control. Field surveys and laboratory tests have identified
those fungi that are indigenous to Africa, with distribution across the
continent and specific to water hyacinth. Of these Alternaria eichhorniae
exhibits the greatest virulence. However, control of weed populations by
this pathogen varies greatly across the different aquatic environments
found in Africa. One factor that varies across environments is the nutrient
status of the water. We report on studies to determine the influence of
varied nutrient status on the growth of water hyacinth and how this
influences the efficacy of control by A. eichhorniae. In addition, we
report on formulations used in mycoherbicides to overcome
environmental factors that limit infection. Finally, because this fungal
pathogen is foliar, its mode of action can be crudely seen as causing plant
defoliation. We report on mechanical defoliation studies of plants to
demonstrate whether the rapid regenerative potential of water hyacinth
enables plants to overcome leaf losses.
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| Utilization of ESTs from cassava (Manihot esculenta Crantz): progress on development of EST-SSR markers and an oligo DNA microarray, Ingelbrecht, I., Jorgensen, K., Bak, S., Gorodkin, J., Raji, A., Winter, S., Lokko, Y., Gedil, M., Anderson, J., Moller, B. and Dixon, A., 2008. |
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Abstract:
Cassava is one of the most important sources of carbohydrates for over 500 million people in the tropics and subtropics. Cassava can be cultivated under conditions considered marginal for most other staple crops and has the added advantage of being utilized as an industrial crop for producing starch and derived products. Thus, cassava appeals to resource-limited, small-scale farmers as well as commercial farming systems. Due to high levels of heterozygosity and low flowering, breeding of cassava is arduous and advances in biotechnology could complement conventional breeding programs. However, as an orphan crop, tools for biotechnology-mediated improvement of cassava are currently limited. To enhance available genomics resources for cassava, we generated and characterized an 18,166 Expressed Sequence Tag (EST) dataset enriched for drought responsive genes. This dataset contains 8,577 unigenes comprised of 3,194 clusters and 5,383 singletons. About 63% of these ESTs could be annotated, while 11% were homologous to hypothetical genes with unknown function. The remaining 26% were not significantly homologous to sequences in public databases. To increase the repertoire of markers for molecular genetic applications, we identified Simple Sequence Repeats (SSRs) from this EST resource and validated these using a diverse cassava panel. We also utilized this EST resource, as well as publicly available sequences, to develop a 60-mer oligo DNA microarray: a total of 35,785 ESTs were assembled into 5,230 contigs and 8,838 singletons and used to design an array with ~11,000 probes for transcriptome analysis. Progress in these areas will be presented.
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