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Functional response of the predators Alloeocranum biannulipes (Hemiptera: Reduviidae) and Teretrius nigrescens (Coleoptera: Histeridae) feeding on Dinoderus porcellus (Coleoptera: Bostrichidae) infesting yam chips, Loko, Y., Djagoun, A. D., Dannon, E. A., Datinon, B., Dansi, A., Thomas-Odjo, A. and Tamo, M., in: Environmental Entomology, volume 46, number 1, pages 84-91, ISSN 0046-225X, 2017. [DOI]
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Antagonistic microorganisms against postharvest rot pathogens in cassava and yams, Manjula, K., Richardson, O., Maina, M.* and Bandyopadhyay, R., Abstract (Poster) in Book of Abstracts of the 11th Triennial Symposium of ISTRC-AB, held at Memling Hotel, Kinshasa. 4-8 October, 2010.

Keywords:

Biocontrol, antagonists, postharvest, yam, cassava

Development of mapping populations for genetic analysis in yams (Dioscorea rotundata and D. alata), Sartie, A. M. 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.

Keywords:

Dioscorea alata, Dioscorea rotundata, Hybrid identification, Molecular markers, Trait mapping, Yam

Environmental stability of resistance to anthracnose and virus diseases of water yam (Dioscorea alata), Egesi, C. N.*, Onyeka, T. J.* and Asiedu, R., in: African Journal of Agricultural Research, volume 4, number 2, pages 113-118, ISSN 1991-637X, 2009.

Keywords:

Colletotrichum gloeosporioides; genotype x environment (G x E) interaction; stable resistance; water yam; yam anthracnose; yam mosaic virus

Sensory evaluation: the last hurdle in varietal development of yams (Dioscorea rotundata, poir) in Ghana, Otoo, E.* and Asiedu, R., in: African Journal of Biotechnology, volume 8, number 21, pages 5747-5754, ISSN 1684-5315, 2009.

Keywords:

Dioscorea; Enzymatic oxidation; farmer participatory breeding; Ghana; yams

A biliography of yams and the genus Dioscorea : 1975-1983, Lawani, S. M., Umoh, J. S. and Odubanjo, M.O., 1985.

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]

A genetic linkage map of guinea yam (Dioscorea rotundata Poir.) based on AFLP markers, Mignouna, H., Mank, R., Ellis, T., Van den Bosch, N., Asiedu, R., Ng, S. Y. C. and Peleman, J., in: Theoretical and Applied Genetics, volume 105, pages 716-725, 2002. [DOI]

A microeconometric analysis of household consumption expenditure determinants in yam-growing areas of Nigeria and Ghana, Mignouna, D., Abdoulaye, T., Alene, A., Manyong, V., Dontsop-Nguezet, P., Ainembabazi, J. H. and Asiedu, R., in: Tropicultura, volume 33, number 3, pages 226-237, ISSN 0771-3312, 2015.

A new approach to improvement of yam (Dioscorea rotundata), Sadik, S. and Okereke, O. U., in: Nature, volume 254, pages 134-135, ISSN 0028-0836, 1975. [DOI]

A review of biotechnological approaches towards crop improvement in African yam bean (Sphenostylis stenocarpa Hochst. Ex A. Rich.), Oluwole, O. O., Aworunse, O. S.*, Aina, A. I., Oyesola, O. L.*, Popoola, J. O.*, Oyatomi, O., Abberton, M. and Obembe, O.*, in: Heliyon, volume 7, number 11: e08481, pages 1-9, ISSN 2405-8440, 2021. [DOI]

A sensitive TAS-ELISA for the detection of some West African isolates of yam mosaic virus (YMV) in Dioscorea species, Njukeng, A. P.*, Atiri, G.*, Hughes, J., Agindotan, B., Mignouna, H. and Thottappilly, G., in: Tropical Science, volume 42, pages 65-74, 2002.

A sequence-independent strategy for amplification and characterisation of episomal badnavirus sequences reveals three previously uncharacterised yam badnaviruses, Bomer, M., Turaki, A., Silva, G., Kumar, P. L. and Seal, S., in: Viruses, volume 8, number 7, pages 1-22, ISSN 1999-4915, 2016. [DOI]

A technique for grafting water yam (Dioscorea alata), Shiwachi, H ., Ayankanmi, T. and Asiedu, R., in: Paper presented at: Proceedings of the 8th Symposium of the International Society for Tropical Root Crops-Africa Branch, Ibadan, Nigeria, 2003.

A transdisciplinary approach for the development of sustainable yam (Dioscorea sp.) production in west Africa, Kiba, D. I., Hgaza, V. K.*, Aighewi, B., Ake, S.*, Barjolle, D., Bernet, T., Diby, L. N.*, Ilboudo, L. J., Nicolay, G., Oka, E.*, Ouattara, Y. F.*, Pouya, N.* and Frossard, E., in: Sustainability, volume 12, number 10: 4016, pages 1-15, ISSN 2071-1050, 2020. [DOI]

Adapting a yam seed technique to meet farmers' criteria: RTB working paper, Odu, B., Coyne, D. and Kumar, P. L., pages 47-64, chapter 4, 2016.

Adoption of yam minisett technology by women farmers in Abia State, Nigeria, Ironkwe, A., Asiedu, R. and Unamma, R. P. A., in: Journal Of Agriculture and Social Research, volume 7, number 2, pages 95-105, ISSN 1595-7470, 2007.

Advanced genomic technologies for genetic enhancement of yam (dioscorea spp.): proceeding (poster), Bhattacharjee, R., Lopez-Montes, A., Abberton, M., Kumar, P. L., De Koeyer, D. and Asiedu, R., World Congress on Root and Tuber Crops, 2016.

Advanced omic technologies for genetic enhancement of yam (Dioscorea spp.), Bhattacharjee, R., Tripathi, L., Lopez-Montes, A., Abberton, M., Kumar, P. L., Dekoyer, D. and Asiedu, R., Abstract, p. w900 in the book of abstracts of the Plant and Animal Genome XXIV Conference January 08 - 13, San Diego, CA, 2016.

Advanced technologies for genetic enhancement of Yam, Bhattacharjee, R., Lopez-Montes, A., Abberton, M., Kumar, P. L. and Asiedu, R., Abstract, p. 385 in the book of abstracts of the Tropentag 2015: management of land use systems for enhanced food security - conflicts, controversies and resolutions, in Humboldt-Universitat Berlin, Germany, September 16 - 18, 2015.

Advances in seed yam propagation methods in Nigeria, Ikeorgu, J.*, Mazza, M.*, Okonkwo, C. and Kikuno, H ., 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 151-154, ISTRC-AB, Ibadan, Nigeria, 2012.

Advances in seed yam propagation methods in Nigeria, Ikeorgu, J.*, Mazza, M.*, Okonkwo, C. and Kikuno, H ., Abstract (Poster) in Book of Abstracts of the 11th Triennial Symposium of ISTRC-AB, held at Memling Hotel, Kinshasa. 4-8 October, 2010.

Advances in yam (Dioscorea spp.) genetics and genomics, Mignouna, H., Abang, M. and Asiedu, R., in: Paper presented at the 13th Triennial symposium of the International Society for Tropical Root Crops (ISTRC): 9-15 November 2003 Arusha, Tanzania, 2003.

AFLP marker diversity in water yam (Dioscorea alata L.), Egesi, C. N.*, Asiedu, R., Ude, G., Ogunyemi, S. and Egunjobi, J.*, in: Plant Genetic Resources: Characterization and Utilization, volume 4, number 3, pages 181-187, ISSN 1479-2621, 2006.

AfricaYam - a project to strengthen yam breeding in west Africa, De Koeyer, D., Lopez-Montes, A., Asfaw, A., Bhattacharjee, R., Abberton, M., Maziya-Dixon, B., Kumar, P. L. and Asiedu, R., Abstract, S13-04 in the Book of Abstracts, World Congress on Root and Tuber Crops, Nanning, China, 2016., 2016.

Agrobacterium-mediated genetic transformation of yam (Dioscorea rotundata): an important tool for functional study of genes and crop improvement, Nyaboga, E., Tripathi, J., Manoharan, R. and Tripathi, L., in: Frontiers in Plant Science, volume 5, number 463, pages 1-14, ISSN 1664-462X, 2014. [DOI]

Keywords:

Dioscorea rotundata; Marker genes; Reporter genes; Agrobacterium tumefaciens; Genetic transformation

Agronomic and hormonal approaches for enhancing flowering intensity in white Guinea yam (Dioscorea rotundata Poir.), Mondo, J., Agre, A. P., Chuma, G. B.*, Asiedu, R., Akoroda, M. O.* and Asfaw, A., in: Frontiers in Plant Science, volume 14, number -: 1250771, pages 1-11, ISSN 1664-462X, 2023. [DOI]

Agronomic performance and consumer acceptability of improved water yam (Dioscorea alata L.) varieties in the Republic of Benin, Dansi, M.*, Loko, Y.*, Fakorede, J.*, Agre, A. P., Laly, J.*, Amegan, A.*, Ogou, H.*, Adebola, P. O., Yedomonhan, H.* and Dansi, A.*, in: Journal of Agriculture and Food Research, volume 18, number -: 101292, pages 1-12, ISSN 2666-1543, 2024. [DOI]

Agronomic performance and yield stability of elite white Guinea yam (Dioscorea rotundata) genotypes grown in multiple environments in Nigeria, Olatunji, A. A., Gana, A. S.*, Tolorunse, K. D.*, Agre, A. P., Adebola, P. O. and Asfaw, A., in: Agronomy, volume 14, number 9: 2093, pages 1-16, ISSN 2073-4395, 2024. [DOI]

Allelopathic potential of some biocontrol agents for the control of fungal rot of yellow yam (Dioscorea cayenensis Lam), Dania, V., Fadina, O.*, Ayodele, M. and Kumar, P. L., in: African Journal of Biotechnology, volume 14, number 6, pages 474-481, ISSN 1684-5315, 2015. [DOI]

An assessment of weed interference in white yam (Dioscorea rotundata Poir), Akobundu, I. and Unamma, R. P. A., 1980.

An assessment of weed interference in white yam (Dioscrorea rotundata Poir), Akobundu, I. and Unamma, R. P. A., 1981.

An EST-SSR based genetic linkage map and identification of QTLs for anthracnose disease resistance in water yam (Dioscorea alata L.), Bhattacharjee, R., Nwadili, C., Saski, C. A., Agre, A. P., Scheffler, B. E., Augusto, J., Lopez-Montes, A., Onyeka, T. J.*, Kumar, P. L. and Bandyopadhyay, R., in: PLoS ONE, volume 13, number 10:e0197717, pages 1-16, ISSN 1932-6203, 2018. [DOI]

An EST-SSR based genetic linkage map of water yam (Dioscorea alata L.) and identification of QTL (s) for anthracnose disease: proceeding (poster), Bhattacharjee, R., Nwadili, C., Saski, C. A., Scheffler, B. E., Onyeka, J.*, Augusto, J., Lopez-Montes, A., Asiedu, R., Kumar, P. L. and Bandyopadhyay, R., 2016.

An improved phenotyping method for evaluation of yam (Dioscorea spp.) resistance to nematodes belonging to the Genera Meloidogyne and Scutellonema, Kolombia, Y. A., Kumar, P. L., Lopez-Montes, A., Claudius-Cole, A. O., Maroya, N., Viaene, N., Bert, W. and Coyne, D., in: Plants, volume 13, number 9: 1175, pages 1-14, ISSN 2223-7747, 2024. [DOI]

An overview of viruses infecting Dioscorea yams in sub-Saharan Africa, Kenyon, L., Shoyinka, S.*, Hughes, J. and Odu, B., in: Plant virology in sub-Saharan Africa: proceedings of a conference organized by IITA, 4-8 June 2001, pages 432-439, International Institute of Tropical Agriculture (IITA), 2003.

An overview of yam research, Quin, M., pages 215-230, International Institute of Tropical Agriculture, 1998.

Analysis of genetic diversity in Guinea yams (Dioscorea spp.) using AFLP fingerprinting, Mignouna, H., Ellis, N. T. H., Knox, M. R., Asiedu, R. and Ng, Q. N., in: Tropical Agriculture (Trinidad), volume 75, pages 224-229, 1998.

Analysis of genetic diversity of African yam bean using SSR markers derived from cowpea, Shitta, N. S., Abberton, M., Adesoye, A. I.*, Adewale, D. B.* and Oyatomi, O., in: Plant Genetic Resources: Characterization and Utilization, pages 1-7, ISSN 1479-2621, 2015. [DOI]

Analysis of newly developed white yam genotypes in a multi-environment trial using genotype main effect and genotype-by-environment (GGE Biplot) model, Nwachukwu, E. C., Ikeorgu, J.* and Asiedu, R., in: Genetics, food sufficiency and economic empowerment in Nigeria; proceedings of the 31st Annual Conference of the Genetics Society of Nigeria, Ibadan, Nigeria, November 6-9, 2006, pages 24-28, 2006.

Analysis of parent and F1 progeny verification in African yam bean (Sphenostylis stenocarpa Hochst, Ex. A. Rich. Harms) using cowpea SSR markers, Adefiranye, A. O., Ogunkanmi, L. A.*, Adeyemo, O.*, Olatunde, T. E.*, Paliwal, R., Abberton, M. and Oyatomi, O., in: Crops, volume 4, pages 480-490, ISSN 2673-7655, 2024. [DOI]

Analysis of relationships between production of yam [Dioscorea spp.] and its determinants in Nigeria: a cointegration approach, Ojiako, I. A., Tarawali, G., Akwarandu, B., Okechukwu, R. and Idowu, A.*, in: African Journal of Root and Tuber Crops, volume 10, number 1, pages 1-8, ISSN 1118-2075, 2013.

Analysis of the pathogenic, morphological and genetic variability of Scutellonema bradys on yam in West Africa, Coyne, D., Williamson, V., Lalbanna, A. B., Tchabi, A., Baimey, H., Labuschagne, N.* and Rotifa, I., Abstract, 2006.

Analysis of tuber yield- and maturity- related traits in water yam (Dioscorea alata L.), Sartie, A. M., Franco, J. and Asiedu, R., in: Journal of Agricultural Science and Technology B, volume 1, pages 311-322, ISSN 1939-1250, 2011.

Analysis of yam yields using the additive main effects and multiplicative interaction (AMMI) model, Egesi, C. N.* and Asiedu, R., in: African Crop Science Journal, volume 10, number 3, pages 195-201, ISSN 1021-9730, 2002.

Keywords:

Biocontrol, antagonists, postharvest, yam, cassava

Anthracnose disease of yams in West Africa: recent advances in research and future perspectives, Abang, M., Asiedu, R., Mignouna, H., Green, K., Wolf, G. and Winter, 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 562-571, 2003.

Antidiabetic and antioxidant profiling of 67 African trifoliate yam accessions by planar on-surface assays versus in vitro assays, Aiyedun, P. O., Sonibare, M. A.*, Gueye, B., Albach, D. C., Heil, J. and Morlock, G. E., in: Fitoterapia, volume 180, number -: 106299, pages 1-12, ISSN 0367-326X, 2025. [DOI]

Application of advanced genomic technologies to accelerate yam breeding (ABSTRACT), Bhattacharjee, R., Lopez-Montes, A., Abberton, M. and Asiedu, R., Abstract in First Global Conference on Yam 'to harness research innovations to unleash the potential of yam', 3-6 October, 2013 Accra, Ghana, 2013.

Application of molecular markers in germplasm enhancement of cassava (Manihot esculenta Crantz) and yam (Dioscorea spp.) at IITA, Mignouna, H., Asiedu, R., Dixon, A., Tonukari, N. J., Ng, N. Q., Thottappilly, G., Knox, M. R. and Ellis, T., in: Technical document, FAO/IAEA on 'Use of novel DNA fingerprinting techniques for the detection and characterisation of genetic variation in vegetatively propagated crops', Mumbi, India, 24-27 February 1997, 1998.

Application of predictive breeding in yam improvement for west Africa, Asfaw, A., Aderonmu, S. D., Norman, D, Darkwa, K., De Koeyer, D., Agre, A. P., Kouaku, A., Chamba, E.*, Otoo, E.*, Obidiegwu, J.*, Nwachukwu, E.*, Dossou-Aminon, I.*, Dansi, A.*, Oselebe, H. O.*, Adebola, P. O. and Asiedu, R., in: Tropical Agriculture Research, volume 12, number 2, pages 117-120, ISSN 1016-1422, 2019.

Approaches for yam germplasm conservation, Ng, N. Q. and Ng, S. Y. C., in: In: Food crops for food security in Africa: proceedings of the Fifth Triennial Symposium of the International Society for Tropical Root Crops-African Branch, 22-28 November 1992, Kampala, Uganda, pages 135-140, ISBN: 978-2079-00-2; ISTRC-AB; CTA; International Institute of Tropical Agriculture (IITA), 1994.

Arbuscular Mycorrhizal fungi in the "yam belt" of W. Africa, Tchabi, A.*, Coyne, D., Lawouin, L., Wiemken, A. and Oehl, F., in: Cost Action 8.38 Meeting: "Achievement and Future Landscape for Arbuscular Mycorrhiza Research" Dijon, France, 2-4 June, 2005.

Assessing food quality in farmer participatory varietal selection of Water Yam (Dioscorea alata L.), Okonkwo, C., Dossou, R.*, Zoupoya, K., N'kpenu, E., Otoo, E.*, Alhassan, A. Y., Echekwu, C. A. and Asiedu, R., 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.

Assessing intraspecific variability and diversity in African yam bean landraces using agronomic traits, Olomitutu, O. E., Abe, A.*, Oyatomi, O., Paliwal, R. and Abberton, M., in: Agronomy, volume 12, number 4: 884, pages 1-13, ISSN 2073-4395, 2022. [DOI]

Assessment of glufosinate ammonium, isoxaflutole and aclonifene (herbicides) residue in yam sett production at different weed control in IITA, Ibadan, Ajayi, E. O .*, University of Ibadan, 2021.

Assessment of inoculation methods in evaluating response of yam cultivars to infection by Scutellonema bradys, Baimey, H., Coyne, D. and Labuschagne, N.*, in: Nematology, volume 7, number 3, pages 375-379, ISSN 1388-5545, 2005.

Assessment of some high ratio propagation technologies for quality seed yam tuber production in Dioscorea alata L. and Dioscorea rotundata Poir, Pelemo, O. S.*, University of Ibadan, 2021.

Assessment of the yam landraces (Dioscorea spp.) of DR Congo for reactions to pathological diseases, yield potential, and tuber quality characteristics, Adejumobi, I. I., Agre, A. P., Onautshu, O. D.*, Adheka, J. G.*, Cipriano, I. M.*, Monzenga, J. C. L. and Komoy, J.*, in: Agriculture, volume 12, number 5: 599, pages 1-20, ISSN 2077-0472, 2022. [DOI]

Assessment of water yam (Dioscorea alata L.) landrace varieties for resistance to anthracnose disease, Bakayoko, L., Pokou, D. N., Essis, B. S., Kouakou, A. M., Dibi, K. E. B., Kouassi, A. B., Nzue, B., Koutouan, T. T., Zohouri, P. G., N'guetta, A. S., Agre, A. P., Mondo, J. and Adebola, P. O., in: African Journal of Agricultural Research, volume 18, number 3: 2A80CC368784, pages 178-193, ISSN 1991-637X, 2022. [DOI]

Assessment of yam mild mosaic virus coat protein gene sequence diversity reveals the prevalence of cosmopolitan and African group of isolates in Ghana and Nigeria, Nkere, C., Otoo, E.*, Atiri, G.*, Onyeka, J.*, Silva, G., Bomer, M., Seal, S. and Kumar, P. L., in: Current Plant Biology, number 100156, pages 1-6, ISSN 2214-6628, 2020. [DOI]

Association mapping in multiple yam species (Dioscorea spp.) of quantitative trait loci for yield-related traits, Adejumobi, I. I., Agre, A. P., Adewumi, A. S., Shonde, T. E., Cipriano, I. M.*, Komoy, J.*, Adheka, J. G.* and Onautshu, O. D.*, in: BMC Plant Biology, volume 23, number -: 357, pages 1-16, ISSN 1471-2229, 2023. [DOI]

Association mapping of plant sex and cross-compatibility related traits in white Guinea yam (Dioscorea rotundata Poir.) clones, Asfaw, A., Mondo, J., Agre, A. P., Asiedu, R. and Akoroda, M. O.*, in: BMC Plant Biology, volume 22, number 1: 294, pages 1-12, ISSN 1471-2229, 2022. [DOI]

Awareness and adoption of positive selection technology among yam farmers in west Africa, Asante, B. O.*, Osei-Adu, J.*, Osei, K.*, Ennin, S.*, Aighewi, B. and Opoku, M.*, in: International Journal of Social Economics, volume 48, number 9, pages 1372-1389, ISSN 0306-8293, 2021. [DOI]

Bacterial tuber root of seed yams (Dioscorea rotundata) in Nigeria and the Republic of Benin, Ayodele, M., Hughes, J. and Asiedu, R., in: Abstract of the Eighth Triennal Symposium of the International Society for Tropical Root Crops - Africa Branch (ISTRC-AB) 12-16 Nov, Ibadan, Nigeria, 2001.

Bacterial tuber rot of seed yams (Dioscorea rotundata) in Nigeria and the Republic of Benin, Ayodele, M., Hughes, J. and Asiedu, R., 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 597-602, 2003.

Baseline protocols: the case of Yam Improvement for Income and Food Security in West Africa (YIIFSWA) project; YIIFSWA working paper series No. 4, Mignouna, D., Abdoulaye, T., Alene, A., Akinola, A. and Maroya, N., YIIFSWA working paper series, International Institute of Tropical Agriculture (IITA), ISBN 978-978-8444-38-1, 2014.

Bibliographical synthesis to evaluate nutritive needs for meals for food products and yam bean consumed at the torque mother - child in Benin (ABSTRACT), Djidonou, J. G.*, Adegbola, P. Y.*, Hell, K. and Mensah, G. A.*, Abstract, P. 94 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.

Bibliography of yams and the genus dioscorea, Lawani, S. M. and Odubanjo, M.O., 1976.

Bioactivity of essential oils of Cymbopogon citratus (DC) Stapf and Cymbopogon nardus (L.) W. Watson from Benin against Dinoderus porcellus Lesne (Coleoptera: Bostrichidae) infesting yam chips, Loko, Y.*, Fagla, S. M.*, Kassa, P.*, Ahouansou, C. A.*, Toffa, J.*, Glinma, B.*, Dougnon, V.*, Koukoui, O.*, Djogbenou, S. L.*, Tamo, M. and Gbaguidi, F.*, in: International Journal of Tropical Insect Science, pages 1-14, ISSN 1742-7584, 2020. [DOI]

Biological effects of African yam bean lectins on the cowpea coreid bug, Clavigralla tomentosicollis (Stal), Okeola, O. and Machuka, J., in: Journal of Economic Entomology, volume 94, pages 2, 2000.

Biomass production and nutrient use efficiency in white Guinea yam (Dioscorea rotundata Poir.) genotypes grown under contrasting soil mineral nutrient availability, Matsumoto, R., Asfaw, A., Ishikawa, H., Takada, K., Shiwachi, H. and Asiedu, R., in: Frontiers in Plant Science, volume 13, number : 973388, pages 1-12, ISSN 1664-462X, 2022. [DOI]

Biotechnology approaches in breeding for biotic stress resistance in yam (Dioscorea spp.), Agre, A. P., Mondo, J., Edemodu, A., Matsumoto, R., Kolade, O., Kumar, P. L., Asiedu, R., Akoroda, M. O.*, Bhattacharjee, R., Gedil, M., Adebola, P. O. and Asfaw, A., pages 583-616, Springer, ISBN 978-3-031-09292-3, 2022. [DOI]

Boiled yam end-user preferences and implications for trait evaluation, Honfozo, L.*, Adinsi, L.*, Bouniol, A., Adetonah, S., Forsythe, L., Kleih, U. K., Hounhouigan, J. D.*, Fliedel, G. and Akissoe, N. H.*, in: International Journal of Food Science and Technology, pages 1-11, ISSN 0950-5423, 2020. [DOI]

Breeder seed yam tuber production using temporary immersion bioreactors, Balogun, M., Maroya, N., Taiwo, J., Chukwunalu, O., Ajayi, A., Gbadegesin, M., Kumar, P. L., Pelemo, O., Aighewi, B., Mignouna, D. and Asiedu, R., International Institute of Tropical Agriculture, ISBN 978-978-131-403-2, 2020.

Breeding clonally propagated species: the practice of yam breeding, Asfaw, A., Darkwa, K. and Asiedu, R., pages 362-371, chapter 19, Wiley, ISBN 978-1-119-62632-9, 2020.

Breeding for abiotic stress resistance in yam (Dioscorea Spp.) using biotechnology approaches: present practices and prospects, Agre, A. P., Mondo, J., Edemodu, A., Matsumoto, R., Asiedu, R., Akoroda, M. O.*, Bhattacharjee, R., Gedil, M., Adebola, P. O. and Asfaw, A., pages 429-457, Springer, ISBN 978-3-031-05705-2, 2022. [DOI]

Calibration development for nutritional evaluation of Yam (Dioscorea sp.) using Near-Infrared Reflectance Spectrophotometry (NIRS), Alamu, E. O., Adesokan, M. and Maziya-Dixon, B., in: Cogent Chemistry, volume 5, number 1565623, pages 1-13, ISSN 2331-2009, 2019. [DOI]

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]

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.

CGIAR genebank viability data reveal inconsistencies in seed collection management, Hay, F. R., Whitehouse, K. J., Ellis, R., Sackville-Hamilton, R., Lusty, C., Ndjiondjop, M., Tia, D., Wenzl, P., Santos, L. G.*, Yazbek, M., Azevedo, V., Peerzada, O. H.*, Abberton, M., Oyatomi, O., de Guzman, F., Capilit, G., Muchugi, A. and Kinyanjui, Z, in: Global Food Security, volume 30, number -: 100557, pages 1-26, ISSN 2211-9124, 2021. [DOI]

Challenging yam research: proceedings, Shiwachi, H ., Asahi (Japan) November 16, 2003, 2003.

Changes in the rhizosphere and root-associated bacteria community of white Guinea yam (Dioscorea rotundata Poir.) impacted by genotype and nitrogen fertilization, Idowu, A. P., Yamamoto, K., Koizumi, T., Matsutani, M., Takada, K., Shiwa, Y., Asfaw, A., Matsumoto, R., Ouyabe, M., Pachakkil, B., Kikuno, H. and Shiwachi, H., in: Heliyon, volume 10, number -: e33169, pages 1-15, ISSN 2405-8440, 2024. [DOI]

Characterisation and conservation of yam biodiversity for sustainable use for food and agriculture in Benin Republic, Dansi, A., Mignouna, H., Sangare, A.*, Zoundjihekpon, J., Asiedu, R. and Quin, F., International Society for Tropical Root Crops (ISTRC) - Africa Branch; Government of Benin, 2001.

Characterisation of yam starch, and optimization of processing parameters of instant noodle from wheat flour and yam (Dioscorea alata) starch blends supplemented with egg powder, Musa, O. B.*, University of Ibadan, 2023.

Characterising quality traits of boiled yam: texture and taste for enhanced breeding efficiency and impact, Adinsi, L.*, Moussa, I. D.*, Honfozo, L.*, Bouniol, A., Meghar, K., Alamu, E. O., Adesokan, M., Arufe, S., Ofoeze, M.*, Okoye, B.*, Madu, T.*, Hotegni, F.*, Chijioke, U.*, Otegbayo, B.*, Dufour, D., Hounhouigan, J. D.*, Ceballos, H., Mestres, C. and Akissoe, N. H.*, in: Journal of the Science of Food and Agriculture, pages 1-29, ISSN 0022-5142, 2023. [DOI]

Characterization and classification of the provitamin A carotenoids of deep yellow-fleshed bitter yam (Dioscorea dumetorum) varieties, Alamu, E. O., Maziya-Dixon, B., Ferede-Menkir, R., Popoola, I., Asiedu, R. and Gondwe, T., in: Journal of Food and Nutrition Research, volume 4, number 10, pages 640-645, ISSN 2333-1119, 2016. [DOI]

Characterization of cucumber mosaic virus isolated from yam (Dioscorea spp.) in West Africa, Eni, A*, Kumar, P. L., Asiedu, R., Alabi, O., Naidu, R., Hughes, J.+ and Rey, M.E.C., in: African Journal of Biotechnology, volume 12, number 22, pages 3472-3480, ISSN 1684-5315, 2013. [DOI]

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Comparative reliability of screening parameters for anthracnose resistance in water yam (Dioscorea alata), Nwadili, C., Augusto, J., Bhattacharjee, R., Atehnkeng, J., Lopez-Montes, A., Onyeka, T. J.*, Kumar, P. L., Asiedu, R. and Bandyopadhyay, R., in: Plant Disease, pages 1-8, ISSN 0191-2917, 2016. [DOI]

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Cytological and molecular characterization for ploidy determination in yams (Dioscorea spp.), Gatarira, C., Sladekova, L., Nemeckova, A., Simonikova, D., Paliwal, R., Asfaw, A., Abberton, M., Gueye, B., Asiedu, R., Cizkova, J., Hřibová, E., Doležel, J., De Koeyer, D ., Adetimirin, V.* and Bhattacharjee, R., in: Agronomy, volume 11, number 10: 1897, pages 1-13, ISSN 2073-4395, 2021. [DOI]

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Delineation of tuber development in African yam bean (Sphenostylis stenocarpa (Hochst ex. A. Rich) Harms, Ojuederie, T. C.*, University of Ibadan, 2021.

Demonstrating the efficacy of existing yam technologies in the Forest-Savannah transition zone of Ghana, Frimpong, F., Owusu, D. E.*, Aidoo, A. K.*, Ennin, S.*, Asumadu, H.* and Maroya, N., in: Journal of Agricultural Science and Practice, volume 5, number 2: CDDF73595, pages 107-118, ISSN 2536-7072, 2020. [DOI]

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Determinants of market value for fresh yam (Dioscorea species) tubers in two consumption centers in Togo, Amegbeto, N. K., Manyong, V., Coulibaly, O. and Asiedu, R., in: Annales des Sciences Agronomiques du Benin, volume 9, number 2, pages 29-48, ISSN 1659-5009, 2007.

Determinants of market value for fresh yam tubers in two consumption centres in Togo, Amegbeto, N. K., Manyong, V., Coulibaly, O. and Asiedu, R., in: Paper presented at the International Workshop on Post-Harvest and consumption of yam: loss reduction and improvement of product quality for African markets; June 17-19 2003, Cotonou, 2003.

Determination of an effective maturity index for white yam (Dioscorea rotundata), Akinwande, B.*, Asiedu, R., Maziya-Dixon, B. and Adeyemi, I.*, in: Journal of Food, Agriculture and Environment, volume 6, number 2, pages 192-196, ISSN 1459-0255, 2008.

Determination of optimum sett size for white guinea yam (Dioscorea rotundata Poir.) seed yam production: trends in sprouting in the presprout nursery and field performance, Gyansa-Ameyyaw, C. E., Hahn, S. K., Alvarez, M. N. and Doku, E. V., 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 335-341, ISTRC; Government of Ghana; International Institute of Tropical Agriculture (IITA), 1994.

Determination of ploidy among yam (Dioscorea spp.) landraces in Kenya by flow cytometry, Muthamia, Z. K.*, Nyende, A. B.*, Mamati, E. G.*, Ferguson, M. and Wasilwa, J., in: African Journal of Biotechnology, volume 13, number 3, pages 394-402, ISSN 1684-5315, 2014. [DOI]

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Developing diagnostics to detect badnavirus and endogenous pararetrovirus DNA sequences in West African yam breeding lines, Turaki, A., Kumar, P. L., Lopez-Montes, A., Bomer, M., Silva, G. and Seal, S., Abstracts, P. 65 in Program and Book of Abstracts of the First Global Conference on Yam 'to harness research innovations to unleash the potential of yam', 3-6 October, Accra Ghana., 2013.

Development and evaluation of hybrid yams (Dioscorea rotundata Poir.) in pre-release multilocational trials in Nigeria, Orkwor, G. C., Asiedu, R., Hahn, S. K., Surma, D., Udensi, U. and Chukwu, G. O., 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 353-355, 2003.

Development of a West African yam Dioscorea spp. core collection, Mahalakshmi, V., Atalobhor, J., Ogunsola, D., Lawson, M. and Ortiz, R., in: Genetic Resources and Crop Evolution, volume 54, number 8, pages 1817-1825, 2007.

Development of genomic simple sequence repeat markers for yam, Tamiru, M., Yamanaka, S., Mitsuoka, C., Babil, P. K., Takagi, Hiroki, Lopez-Montes, A., Sartie, A. M., Asiedu, R. and Terauchi, R., in: Crop Science, volume 55, pages 1-10, ISSN 0011-183X, 2015. [DOI]

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Keywords:

Dioscorea alata, Dioscorea rotundata, Hybrid identification, Molecular markers, Trait mapping, Yam

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Development of microsatellite markers for anthracnose resistance in greater yam (Dioscorea alata L.) from expressed sequence tags of heterologous crop species, Narina, S. S., Montegue, P., Asiedu, R. and Mohamed, A. I., in: Journal of Root Crops, volume 38, number 1, pages 64-69, ISSN 0378-2409, 2012.

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Differential effect of hot water treatment on whole tubers versus cut setts of yam (Dioscorea spp.), Coyne, D., Claudius-Cole, A. O.*, Kenyon, L. and Baimey, H., in: Pest Management Science, volume 66, number 4, pages 385-389, ISSN 1526-498X, 2010.

Direct planting versus transplanting of yam leaf-bud cuttings for seed production, Aighewi, B., Maroya, N., Aihebhoria, D., Balogun, M., Mignouna, D. and Asiedu, R., International Institute of Tropical Agriculture, 2022.

Distinction of mixed yam strains (Dioscorea alata L.) cultivated in Yaku Island, Onjo, M., Matsuo, T., Hakariya, S., Shiwachi, H . and Hayashi, M., in: Kagoshima University Research Center for the Pacific Islands Occasional Papers, volume 38, pages 37-41, 2003.

Distribution and diversity of viruses infecting yams (Dioscorea spp.) in Cameroon, Azeteh, I. N., Hanna, R., Njukeng, A. P.*, Oresanya, A., Sakwe, P. N.* and Kumar, P. L., in: VirusDisease, pages 1-12, ISSN 2347-3584, 2019. [DOI]

Distribution and prevalence of nematodes (Scutellonema bradys and Meloidogyne spp.) on marketed yam (Dioscorea spp.) in West Africa, Coyne, D., Tchabi, A.*, Baimey, H., Labuschagne, N.* and Rotifa, I., in: Field Crops Research, volume 96, number 1, pages 142-150, ISSN 0378-4290, 2006.

Distribution and severity of Yam anthracnose in Nigeria, Akem, C. and Asiedu, R., in: Root Crops for food security in Africa: proceedings of the Fifth Triennial Symposium of the International Society for Tropical Root Crops-Africa Branch, 22-28 November 1992, Kampala, Uganda, pages 297-301, ISTRC-AB; CTA; International Institute of Tropical Agriculture (IITA), 1994.

Distribution and virulence of fungal species isolated from yam (Dioscorea spp.) tubers in three agroecological zones of Nigeria, Dania, V., Fadina, O.*, Ayodele, M. and Kumar, P. L., in: International Journal of Pest Management, pages 1-10, ISSN 0967-0874, 2019. [DOI]

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Distribution of yam internal brown spot disease in Cote d'Ivoire, Toualy, M.N.Y.*, Diallo, H.* and Kumar, P. L., Abstracts, P. 79 in Program and Book of Abstracts of the First Global Conference on Yam 'to harness research innovations to unleash the potential of yam', 3-6 October, Accra Ghana., 2013.

Distribution, incidence and severity of viral diseases of yam (Dioscorea spp.) in Cote d'Ivoire, Toualy, M. N. Y., Diallo, H.*, Akinbade, S., Seka, K.* and Kumar, P. L., in: African Journal of Biotechnology, volume 13, number 3, pages 465-470, ISSN 1684-5315, 2014. [DOI]

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Diversity of arbuscular mycorrhizal fungi in soils of yam (Dioscorea spp.) cropping systems in four agroecologies of Nigeria, Dare, M. O.*, Abaidoo, R., Fagbola, O.* and Asiedu, R., in: Archives of Agronomy and Soil Science, volume 59, number 4, pages 521-531, ISSN 0365-0340, 2013. [DOI]

Diversity of root-knot nematodes associated with tubers of yam (Dioscorea spp.) established using isozyme analysis and mitochondrial DNA-based identification, Kolombia, Y. A., Karssen, G., Viaene, N., Kumar, P. L., de Sutter, N., Joos, L., Coyne, D. and Bert, W., in: Journal of Nematology, volume 49, number 2, pages 177-188, ISSN 0022-300X, 2017.

Diversity of water yam (Dioscorea alata L.) accessions from Cote d'Ivoire based on SNP markers and agronomic traits, Bakayoko, L., Pokou, D. N., Kouassi, A. B., Agre, A. P., Kouakou, A. M., Dibi, K. E. B., Nzue, B., Mondo, J., Adebola, P. O., Akintayo, O. T., Asfaw, A. and N'guetta, A. S., in: Plants, volume 10, number 12: 2562, pages 1-18, ISSN 2223-7747, 2021. [DOI]

Diversity of white Guinea yam (Dioscorea rotundata Poir.) cultivars from Benin as revealed by agro-morphological traits and SNP markers, Agre, A. P., Dassou, A. G.*, Loko, Y.*, Idossou, R.*, Dadonougbo, E.*, Gbaguidi, A. A.*, Mondo, J., Muyideen, Y., Adebola, P. O., Asiedu, R., Dansi, A.* and Asfaw, A., in: Plant Genetic Resources: Characterization and Utilization, pages 1-10, ISSN 1479-2621, 2021. [DOI]

Diversity of yam (Dioscorea spp.) using morphological and molecular characters in the North-West region of the Democratic Republic of Congo, Adejumobi, I. I.*, University of Kisangani, 2022.

Diversity studies on Guinea yam (Dioscorea rotundata) for utilization of genetic resources, Yamanaka, S., Babil, P. K., Matsumoto, R., Oli, M. T., Girma Tessema, G., Bhattacharjee, R., Gueye, B., Abberton, M., Lopez-Montes, A., Muranaka, S., Terauchi, R. and Takagi, H., Abstract, P. 28 in the program and book of abstracts of the First Global Conference on Yam 'to harness research innovations to unleash the potential of yam', 3-6 October, 2013 Accra, Ghana, 2013.

Diversity study on yam genetic resources in the "EDITS-Yam" project, Yamanaka, S., Oli, M. T., Babil, P. K., Girma Tessema, G., Bhattacharjee, R., Lopez-Montes, A., Matsumoto, R., Muranaka, S., Gedil, M., Terauchi, R. and Takagi, H., Abstract, P.95 in the Book of Abstracts, 16th Triennial Symposium of the International Society for Tropical Root Crops (ISTRC), 23 - 28th September, 2012.

Diversity, trait preferences, management and utilization of yams landraces (Dioscorea species): an orphan crop in DR Congo, Adejumobi, I. I., Agre, A. P., Onautshu, O. D.*, Adheka, J. G.*, Bambanota, M. G.*, Monzenga, J. C. L., Komoy, J.* and Cipriano, I. M.*, in: Scientific Reports, volume 12, number -: 2252, pages 1-16, ISSN 2045-2322, 2022. [DOI]

DNA barcoding of the main cultivated yams and selected wild species in the genus Dioscorea, Girma Tessema, G., Spillane, C. and Gedil, M., in: Journal of Systematics and Evolution, volume 54, number 3, pages 228-237, ISSN 1674-4918, 2016. [DOI]

DNA fingerprinting for identification of yam cultivars using microsatellite markers, Ogedengbe, O., Bhattacharjee, R., Lopez-Montes, A., Ikeorgu, J.* and Kumar, P. L., Abstract in the Book of Abstracts, 16th Triennial Symposium of the International Society for Tropical Root Crops (ISTRC), 23 - 28th September, 2012.

DNA fingerprinting of yam cultivars from Nigeria and Ghana using microsatellite markers, Bhattacharjee, R., Ogedengbe, O., Lopez-Montes, A., Ikeorgu, J.*, Chamba, E.*, Otoo, E.* and Kumar, P. L., Abstract in First Global Conference on Yam 'to harness research innovations to unleash the potential of yam', 3-6 October, 2013 Accra, Ghana, 2013.

Domestication and evolutionary dynamics of cultivated yam (Dioscorea cayenensis /D. rotundata complex) in Benin, Dansi, A.*, Adjatin, A.*, Bhattacharjee, R., Asiedu, R., Vodouhe, R., Akouegninou, A.* and Sanni, A.*, Abstract in First Global Conference on Yam 'to harness research innovations to unleash the potential of yam', 3-6 October, 2013 Accra, Ghana, 2013.

Dormancy in yams, Craufurd, P., Summerfield, R., Asiedu, R. and Vara Prasad, P., in: Experimental Agriculture, volume 37, number 2, pages 147-181, ISSN 0014-4797, 2001.

Duration from vine emergence to flowering suggests a long-day or rate of change of photoperiod response in white yam (Dioscorea rotundata Poir), Ile, E., Craufurd, P., Asiedu, R. and Battey, N., in: Environmental and Experimental Botany, volume 60, pages 86-94, ISSN 0098-8472, 2007.

Economic analysis of commercial seed yam production systems in the Sub-humid ecologies of the river Niger, Ibana, S.*, Coyne, D., Claudius-Cole, A. O.*, McNamara, N. and Morse, S., in: Journal of Crop Improvement, volume 26, number 1, pages 22-28, ISSN 1542-7528, 2012. [DOI]

Economic analysis of seed yam production systems in Nigeria, Mignouna, D., Abdoulaye, T., Alene, A., Aighewi, B., Pelemo, O., Manyong, V., Asiedu, R. and Akoroda, M. O.*, in: Journal of Root Crops, volume 39, number 2, pages 221-229, ISSN 0378-2409, 2013.

EDITS-Yam: a collaborative research project on the "use of genomic information and molecular tools for yam germplasm utilization and improvement for West Africa", Takagi, H., Terauchi, R., Lopez-Montes, A., Yamanaka, S., Ishizaki, T., Tamiru, M., Natsume, S., Takagi, Hiroki, Babil, P. K., Matsumoto, R., Yamamoto, K., Girma Tessema, G., Gueye, B., Bhattacharjee, R., Muranaka, S., Abberton, M. and Asiedu, R., Abstract, P. 116 in the program and book of abstracts of the First Global Conference on Yam 'to harness research innovations to unleash the potential of yam', 3-6 October, 2013 Accra, Ghana, 2013.

Effect of age of yam tuber at harvest on the qualities of yam foods, Abass, A., Olorunade, A. O. and Asiedu, R., 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 131-138, 2003.

Effect of collecting time of scions and treatment of gibberellin and uniconazole-P on the growth of vine cuttings in water yam (Dioscorea alata L.), Matsumoto, R., Shiwachi, H ., Kikuno, H ., Irie, K. and Toyohara, H., in: Japanese Society for Tropical Agriculture, Research for Tropical Agriculture, October 09-10, Okinawa, Japan., pages 51-52, 2010.

Effect of collection time of scions and treatment with Gibberellin and Uniconazol-P on the growth of vine cutting in water yam (Dioscorea alata L.), Matsumoto, R., Shiwachi, H ., Kikuno, H ., Irie, K. and Toyohara, H., in: Research for Tropical Agriculture, volume 4, number 1, pages 22-26, 2011.

Effect of day length on the development of tubers in yams (Dioscorea spp.), Shiwachi, H ., Ayankanmi, T. and Asiedu, R., in: Tropical Science, volume 42, pages 162-170, ISSN 1556-9179, 2002.

Effect of day length on the enlargement and maturation of tubers in yams (Dioscorea spp.), Shiwachi, H ., Ayankanmi, T. and Asiedu, R., volume 44, pages 33-34, 2001.

Effect of Ethephone and storage temperature on tuber sprouting in yams (Dioscorea spp.), Shiwachi, H ., Kikuno, H ., Asiedu, R., Onjo, M. and Toyohara, H., in: Journal of ISSAAS, volume 11, number 1, pages 36-43, 2005.

Effect of Etrusion Variables on Extrudates properties of water yam flours - A Response Surface Analysis, Oke, M. O.*, Awonorin, S.*, Sanni, L. O.*, Asiedu, R. and Aiyedun, P. O.*, Abstract in Book of Abstracts of the 11th Triennial Symposium of ISTRC-AB, held at Memling Hotel, Kinshasa. 4-8 October, 2010.

Effect of extrusion variables on extrudates properties of water yam flour- a response surface analysis, Oke, M. O.*, Awonorin, S.*, Sanni, L. O.*, Asiedu, R. and Aiyedun, P. O.*, in: Journal of Food Processing and Preservation, pages 1-18, ISSN 0145-8892, 2012. [DOI]

Effect of extrusion variables on extrudates properties of water yam flours - a response surface analysis, Oke, M. O.*, Awonorin, S.*, Sanni, L. O.*, Asiedu, R. and Aiyedun, P. O.*, 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 453-470, ISTRC-AB, Ibadan, Nigeria, 2012.

Effect of extrusion variables on residence time, mass flow rate and expansion ratio of water yam starches using response surface methodology, Oke, M. O.*, Awonorin, S.*, Sanni, L. O.*, Asiedu, R. and Aiyedun, P. O.*, Abstract (Poster) in Book of Abstracts of the 11th Triennial Symposium of ISTRC-AB, held at Memling Hotel, Kinshasa. 4-8 October, 2010.

Effect of harvest date on the dormancy period of yam (Dioscorea rotundata), Swannell, M., Wheeler, T., Asiedu, R. and Craufurd, P., in: Tropical Science, volume 43, pages 103-107, 2003.

Effect of leaf thinning on shoot growth and tuber yield of white Guinea yam, Iseki, K., Olaleye, O. and Matsumoto, R., in: Plant Production Science, pages 1-9, ISSN 1343-943X, 2021. [DOI]

Effect of method of seed bed preparation, mulching and time of planting on yam (Dioscorea rotundata) in Western Nigeria, Lal, R. and Hahn, S. K., in: Proceedings of the Third Symposium of the International Society for Tropical Root Crops held at IITA, Ibadan, Nigeria, 2-9 December, 1973, edited by C. L. A. Leakey, pages 293-306, International Society for Tropical Root Crops (ISTRC); International Institute of Tropical Agriculture (IITA), 1977.

Effect of mineral fertilisation on tuber yield and quality in Yams (Dioscorea alata and Dioscorea rotundata), Afolabi, F.*, Matsumoto, R., Akinwande, B.*, Otegbayo, B.* and Asfaw, A., in: Agriculture, volume 13, number 12: 2240, pages 1-14, ISSN 2077-0472, 2023. [DOI]

Effect of mound size and fertilizer on white guinea yam (Dioscorea rotundata) in southern Nigeria, Kang, B. and Wilson, J. E., in: Plant and Soil, volume 61, pages 319-327, 1981.

Effect of mulching material and plant density on growth, development and yield of white yam minisetts, Osiru, D.*, Hahn, S. K. and Lal, R., in: Tropical Root Crops: Root Crops and the African Food Crisis: Proceedings of the Third Triennial Symposium of the International Society for Tropical Root Crops - Africa Branch, pages 43-47, IDRC, 1987.

Effect of N-Propyl Dihydrojasmonate (Pdj) on in vitro growth of yam (Dioscorea spp.) explants, Kikuno, H ., Oladimeji, Z., Ebuehi, Z., Ebuehi, A., Shiwachi, H ., Onjo, M. and Asiedu, R., in: Japanese Journal of Tropical Agriculture, volume 49, number 2, pages 59-60, ISSN 0021-5260, 2005.

Effect of photoperiod on the development of inflorescences in white Guinea yam (Dioscorea rotundata), Shiwachi, H ., Ayankanmi, T. and Asiedu, R., in: Tropical Science, volume 45, number 3, pages 126-130, ISSN 0041-3291, 2005.

Effect of pre-plant treatments of yam (Dioscorea rotundata) setts on the production of healthy seed yam, seed yam storage and consecutive ware tuber production, Claudius-Cole, A. O., Kenyon, L. and Coyne, D., in: Journal of Agriculture and Rural Development in the Tropics and Subtropics, volume 118, number 2, pages 297-306, ISSN 1612-9830, 2017.

Effect of seed sett size on sprouting, shoot growth, and tuber yield of white guinea yam (Dioscorea rotundata), Iseki, K. and Matsumoto, R., in: Plant Production Science, pages 1-6, ISSN 1343-943X, 2019. [DOI]

Effect of shade and level of fertilizer application on nutrient uptake and dry matter partitioning in cocoyam (Xanthosoma sagittifolium L.), Asante, M. O., Ahiakpa, J. K.*, Amoatey, C.* and Adjei-Nsiah, S., in: Journal of Plant Nutrition, volume 40, number 16, pages 2312-2325, ISSN 0190-4167, 2017. [DOI]

Effect of staking and non-staking systems on disease severity, yield and quality attributes of yams (Dioscorea alata), Norman, P. E.*, Whyte, J., Samura, A. E.*, Massaquoi, A.*, Sessay, L.*, Dixon, A., Fomba, S. N.*, Benya, M.T.* and Sowa, M.*, in: Journal of Agriculture and Ecology Research International, volume 2, number 4, pages 219-229, ISSN 2394-1073, 2015. [DOI]

Effect of sucrose treatment on root, shoot and tuber formation of vine cuttings of yams (Dioscorea spp.), Kikuno, H ., Matsumoto, R., Shiwachi, H . and Asiedu, R., in: Japanese Journal of Tropical Agriculture, volume 51, number Extra issue 2, pages 69-70, 2007.

Effect of two species of arbuscular mycorrhizal fungi inoculation on development of micro-propagated yam plantlets and suppression of Scutellonema bradys (Tylenchideae), Tchabi, A.*, Hountondji, F.*, Ogunsola, B., Lawouin, L., Coyne, D., Wiemken, A. and Oehl, F., in: Journal of Entomology and Nematology, volume 8, number 1, pages 1-10, ISSN 2006-9855, 2016. [DOI]

Effect of various fertilizer treatments on Scutellonema bradys populations and damage in yam (Dioscorea spp.) in the field and in storage, Baimey, H., Coyne, D. and Labuschagne, N.*, in: International Journal of Pest Management, volume 52, number 1, pages 63-70, 2006.

Effect of water yam (Dioscorea alata) flour fortified with distiller's spent grain on nutritional, chemical, and functional properties, Awoyale, W., Maziya-Dixon, B., Sanni, L. O.* and Shittu, T.*, in: Food Science & Nutrition, pages 1-10, ISSN 2048-7177, 2015. [DOI]

Effectiveness of bylaws related to sustainable intensification of potatoes in Southwestern Ugandan, Makuma-Henry, M.*, Makerere University, 2024.

Effects of arbuscular mycorrhizal inoculation and phosphorus application on yield and nutrient uptake of yam, Dare, M. O.*, Abaidoo, R., Fagbola, O.* and Asiedu, R., in: Communications in Soil Science and Plant Analysis, volume 41, pages 2729-2743, ISSN 0010-3624, 2010.

Effects of basal medium and plant growth regulator regimes on meristem and nodal cultures in white yam (D. rotundata), Ajayi, A., Balogun, M., Maroya, N. and Asiedu, R., YIIFSWA Research Brief, 2017.

Effects of cultivar and agrobotanical storage treatment on organolepetic quality of yam, Eze, S. C.*, Oko-Ibom, G. O.* and Asiedu, R., in: African Journal of Food, Agriculture, Nutrition and Development (AJFAND), volume 9, number 8, ISSN 1684-5374, 2009.

Effects of methods of seedbed preparation and mulching on the growth and yield of white yam (Dioscorea rotundata) on an ultisol in south-east Nigeria, Maduakor, H. O., Lal, R. and Opara-Nadi, A. O., in: Field Crops Research, volume 9, pages 119-130, ISSN 0378-4290, 1984. [DOI]

Effects of nitrogen fertilization on pounded yam sensory and physico-chemicals properties. Posters session, Cornet, D., Akissoe, N., Vernier, P. and Mestres, C., in: Roots and tubers for sustainable development: issues and strategies. Proceeding of the 14th triennal symposium of the ISTRC, CTCRI, ISTRC, ISRC, 2006.

Effects of policies on yam production and consumption in Nigeria, Adesiyan, O. F.*, Adesiyan, A. T.*, Bamire, A. S.*, Ousmane, C. and Asiedu, R., in: Agribusiness, pages 1-16, ISSN 0742-4477, 2015. [DOI]

Effects of silver nitrate on in vitro development of yam (Dioscorea rotundata Poir) plants, Oluwasegun, Y. R., Uchendu, E. E., Adeyemi, A. and Abberton, M., in: In Vitro Cellular & Developmental Biology - Plant, pages 1-10, ISSN 1054-5476, 2024. [DOI]

Effects of storage on the chemical composition and food quality of yam, Otegbayo, B.*, Asiedu, R. and Bokanga, M.*, in: Journal of Food Processing and Preservation, pages 1-8, ISSN 0145-8892, 2011. [DOI]

Effects of synthetic hormone substitutes and genotypes on rooting and mini tuber production of vines cuttings obtained from white yam (Dioscorea rotundata, Poir), Agele, S.*, Ayankanmi, T. and Kikuno, H ., in: African Journal of Biotechnology, volume 9, number 30, pages 4714-4724, ISSN 1684-5315, 2010.

Effects of ten plant extracts on mycelial growth and conidial production of four fungi associated with yam tuber rot, Sangoyomi, T.*, Asiedu, R. and Ekpo, E.*, in: African Journal of Root and Tuber Crops, volume 8, number 1, pages 24-30, ISSN 1118-2075, 2010.

Effects of tropical weeds on yield in white yam (Dioscorea rotundata Poir), Unamma, R. P. A. and Akobundu, I., in: Weed Research, volume 29, number 1, pages 1-6, ISSN 0043-1737, 1989.

Effects of two processing methods on some nutrients and anti-nutritional factors in yellow yam (Dioscorea cayenensis), Akin-Idowu, P., Asiedu, R., Maziya-Dixon, B., Odunola, A.* and Uwaifo, A.*, in: African Journal of Food Science, volume 3, number 1, pages 022-025, ISSN 1996-0816, 2009.

Keywords:

Antinutrients; boiling; Dioscorea cayenensis; phytic acid; pounding and tannin

Effet de la p'eriode de pollinisation manuelle sur la fructification de l'igname (Dioscorea rotundata Poir; Dioscoreaceae) en Cote d'Ivoire, Bakayoko, Y., Kouakou, A. M., Dibi, K. E. B., Ehounou, A. E., Essis, B. S., Nzue, B., Kouassi, A. B., N'guetta, A. S. and Adebola, P. O., in: European Scientific Journal, volume 15, number 27, pages 448-464, ISSN 1857-7881, 2019. [DOI]

Effets des precedentes plantes de couverture sur la production de l'igname en zone de savane au Benin et au Togo, Sodjadan, P. K.*, Toukourou, M. A.*, Carsky, R. and Vernier, P., in: African Journal of Root and Tuber Crops, volume 6, number 1, pages 34-40, ISSN 1118-2075, 2005.

Efficacy of indigenous arbuscular mycorrhizal fungi for promoting white yam (Dioscorea rotundata) growth in West Africa, Tchabi, A.*, Coyne, D., Hountondji, F., Lawouin, L., Wiemken, A. and Oehl, F., in: Applied Soil Ecology, volume 45, pages 92-100, ISSN 0929-1393, 2010. [DOI]

Efficacy of Oryza sativa husk and Quercus phillyraeoides extracts for the in vitro and in vivo control of fungal rot disease of white yam (Dioscorea rotundata Poir), Dania, V., Fadina, O.*, Ayodele, M. and Kumar, P. L., in: SpringerPlus, volume 3, number 1, pages 1-7, ISSN 2193-1801, 2014. [DOI]

Efficient elimination of Yam mosaic virus (YMV) from white yam (Dioscorea rotundata Poir.) by cryotherapy of axillary buds, Ita, E. E.*, Uyoh, E. A.*, Nakamura, I. and Ntui, V. O., in: South African Journal of Botany, volume 130, pages 123-129, ISSN 0254-6299, 2020. [DOI]

Eliminating hunger: yam for improved income and food security in west Africa, Aighewi, B., Maroya, N., Asiedu, R., Mignouna, D., Balogun, M. and Kumar, P. L., pages 1-21, MDPI, ISBN 978-3-03897-863-3-3, 2023. [DOI]

Elimination of bacterial from in vitro yam tissue cultures using antibiotics, Mbah, E. I. and Wakil, S. M.*, in: Journal of Plant Pathology, volume 94, number 1, pages 53-58, ISSN 1125-4653, 2012. [DOI]

Elite genotypes of water yam (Dioscorea alata) yield food product quality comparable to white yam (Dioscorea rotundata), Adesokan, M., Alamu, E. O., Fawole, S., Asfaw, A. and Maziya-Dixon, B., in: Applied Sciences, volume 14, number 9: 3704, pages 1-15, ISSN 2076-3417, 2024. [DOI]

Embryo culture of yam: germination and callus induction, Ng, S. Y. C., Ngu, M. A. and Ladeinde, T. A. O.*, in: Root crops for food security in Africa: proccedings of the Fifth Triennial Symposium of the International Society for Tropical Root Crops-Africa Branch, 22-28 November 1992, Kampala, Uganda, pages 141-144, ISTRC-AB; CTA; International Institute of Tropical Agriculture (IITA), 1994.

End-user preferences for pounded yam and implications for food product profile development, Otegbayo, B.*, Madu, T.*, Oroniran, O.*, Chijioke, U.*, Fawehinmi, O.*, Okoye, B.*, Tanimola, A.*, Adebola, P. O. and Obidiegwu, J.*, in: International Journal of Food Science and Technology, pages 1-15, ISSN 0950-5423, 2020. [DOI]

End-user quality characteristics and preferences for cassava, yam and banana products in rural and urban areas - a review, Osunbade, A. O., Alamu, E. O., Awoyale, W., Akinwande, B.*, Adejuyitan, A.* and Maziya-Dixon, B., in: Cogent Food & Agriculture, volume 9, number 1: 2205720, pages 1-8, ISSN 2331-1932, 2023. [DOI]

Enhancing off-season yam production in Nigeria, Shiwachi, H ., Kikuno, H ., Fashola, R. and Asiedu, R., in: African Journal of Agricultural Research, volume 3, number 6, pages 407-411, ISSN 1991-637X, 2008.

Enhancing seed yam supply systems in West Africa, Akoroda, M. O.*, Claudius-Cole, B.*, Kikuno, H ., Okonkwo, C., Aighewi, B. A.*, Acha, I. and Asiedu, R., 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 123-136, ISTRC-AB, 2010.

Keywords:

Colletotrichum gloeosporioides; genotype x environment (G x E) interaction; stable resistance; water yam; yam anthracnose; yam mosaic virus

Epidemiological analysis of yam mosaic virus (YMV) infection risk factors and its implications for clean seed yam systems: poster, Osundahunsi, B., Oviasuyi, T., Odu, B. O.*, Aighewi, B. and Kumar, P. L., International Institute of Tropical Agriculture, 2022.

Establishment of 'Yam Development Forums' to promote seed yam enterprise for income and food security in West Africa, Aighewi, B., Odihi, O., Mignouna, D., Kleih, U. K., Sey, S.*, Otoo, E.*, Boadu, P.*, Phillips, D., Shuaibu, A.*, Ogbonna, M.*, Kultse, R.*, Etudayo, H.*, Maroya, N. and Kumar, P. L., Abstracts, P. 81 in Program and Book of Abstracts of the First Global Conference on Yam 'to harness research innovations to unleash the potential of yam', 3-6 October, Accra Ghana., 2013.

Estimate App for yam anthracnose disease phenotyping: user guide, Kolade, O. and Kumar, P. L., Booklet, 2021.

Estimating market demand for fresh yam characteristics using contingent valuation: implications for crop breeding and production choices, Amegbeto, N. K., Manyong, V., Coulibaly, O. and Asiedu, R., in: Agricultural Economics, volume 39, number 3, pages 349-363, 2008.

Evaluating the dry matter content of raw yams using hyperspectral imaging spectroscopy and machine learning, Adesokan, M., Otegbayo, B.*, Alamu, E. O., Olutoyin, M. A.* and Maziya-Dixon, B., in: Journal of Food Composition and Analysis, volume 135, number -: 106692, pages 1-12, ISSN 0889-1575, 2024. [DOI]

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.

Evaluation of 5 hybrid yams for dry season yam production in lowland areas, Ikeorgu, J.* and Asiedu, R., 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 640-642, Agricultural Society of Nigeria, 2006.

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]

Evaluation of biological control agents (BCAs) for the control of tuber rot of yam (Dioscorea spp.), Dania, V., Fadina, O.*, Ayodele, M. and Kumar, P. L., Abstract, P.162 in the Book of Abstracts, 16th Triennial Symposium of the International Society for Tropical Root Crops (ISTRC), 23 - 28, September, 2012.

Evaluation of elite and local African yam bean cultivars for yield and yield-related traits, Baiyeri, S. O.*, Uguru, M. I.*, Ogbonna, P. E.* and Okechukwu, R., in: Tropical Agriculture, volume 99, number 2, pages 90-105, ISSN 0041-3216, 2022.

Evaluation of four botanicals extracts and three types of storage bags for yam chip storage, Eze, S. C.*, Asiegbu, J. E., Mbah, B.*, Orkwor, G. C. and Asiedu, R., in: Paper presented at the International Workshop on Post-Harvest and consumption of yam: loss reduction and improvement of product quality for African markets; June 17-19 2003, Cotonou, 2003.

Evaluation of isolates of Trichoderma, Pseudomonas and Bacillus species as treatment for the control of post-harvest fungal rot disease of yam (Dioscorea spp.), Dania, V., Fadina, O.*, Ayodele, M. and Kumar, P. L., in: Archives of Phytopathology and Plant Protection, pages 1-15, ISSN 0323-5408, 2016. [DOI]

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]

Evaluation of performance of introduced yam bean (Pachyrhizus spp.) in three agro-ecological zones of Rwanda, Ndirigwe, J.*, Rubaihayo, P.*, Tukamuhabwa, P.*, Agaba, R.*, Rukundo, P.*, Mwanga, R. O., Tumwegamire, S., Kamarirwa, V.*, Kayinamura, E.* and Gruneberg, W. J., in: Tropical Plant Biology, volume 10, number 2-3, pages 97-109, ISSN 1935-9756, 2017. [DOI]

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.

Evaluation of resistance to yam mosaic virus (YMV), genus Potyvirus in white yam (Dioscorea rotundata Poir.), Odu, B., Asiedu, R., Hughes, J., Shoyinka, S.* and Oladiran, O., in: Field Crops Research, volume 89, pages 97-105, 2004.

Evaluation of sixteen clones of selected yam (Dioscorea cayenensis-ro-tundata) in two agroecological zones in Togo, N'kpenu, E., Asiedu, R. and Tchala, W., 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.

Evaluation of starches digestibility and glycemic index of commonly consumed sstaple foods from selected varieties of cassava (Manihot sp.) and yam (Dioscorea sp.), Eyinla, T. A.*, University of Ibadan, 2019.

Evaluation of the American yam bean (Pachyrhizus spp.) for storage root yield across varying eco-geographic conditions in Uganda, Andiku, C.*, Tukamuhabwa, P.*, Ssebuliba, J. M.*, Talwana, H.*, Tumwegamire, S. and Gruneberg, W. J., in: Journal of Agricultural Science, volume 11, number 8, pages 100-112, ISSN 1916-9752, 2019. [DOI]

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First report of Meloidogyne enterolobii causing tuber galling damage on white yam (Dioscorea rotundata) in Nigeria, Kolombia, Y. A., Kumar, P. L., Claudius-Cole, A. O.*, Karssen, G., Viaene, N., Coyne, D. and Bert, W., in: Plant Disease, volume 100, number 10, pages 2173, ISSN 0191-2917, 2016. [DOI]

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Functional response of the predators Alloeocranum biannulipes (Hemiptera: Reduviidae) and Teretrius nigrescens (Coleoptera: Histeridae) feeding on Dinoderus porcellus (Coleoptera: Bostrichidae) infesting yam chips, Loko, Y.*, Djagoun, A. D.*, Dannon, E. A., Datinon, B., Dansi, A.*, Thomas-Odjo, A.* and Tamo, M., in: Environmental Entomology, volume 46, number 1, pages 84-91, ISSN 0046-225X, 2017. [DOI]

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Rate of change in photoperiod and the intensity of timing of flowering in white yam (Dioscorea rotundata Poir.), Ile, E., Craufurd, P., Battey, N. and Asiedu, R., in: Comparative Biochemistry and Physiology A: Molecular and Integrative Physiology, volume 134, pages S161, ISSN 1095-6433, 2003.

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Relative changes in the nutrient composition of six cultivars of white yam grown in three ecozones of southeastern Nigeria, Asadu, C.*, Ezumah, H. C., Akammigbo, F. O. and Nweke, F., pages 126-137, International Institute of Tropical Agriculture (IITA), 1989.

Relative effects of Uniconazole-p and other growth regulators on micropropagation ratio of yam (Dioscorea spp.) plantlets at different growth phases, Balogun, M., Ng, S. Y., Fawole, I.*, Shiwachi, H. and Kikuno, H., in: Journal of Root Crops, volume 40, number 2, pages 5-11, ISSN 0378-2409, 2014.

Relative efficiency of positive selection and tissue culture for generating pathogen-free planting materials of yam (Dioscorea spp.), Balogun, M., Maroya, N., Augusto, J., Ajayi, A., Kumar, P. L., Aighewi, B. and Asiedu, R., in: Czech Journal of Genetics and Plant Breeding, volume 53, number 1, pages 9-16, ISSN 1212-1975, 2017. [DOI]

Repellent effect and insecticidal activities of Bridelia ferruginea, Blighia sapida, and Khaya senegalensis leaves powders and extracts against Dinoderus porcellus in infested dried yam chips, Loko, Y.*, Alagbe, O.*, Dannon, E. A., Datinon, B., Orobiyi, A.*, Thomas-Odjo, A.*, Dansi, A.* and Tamo, M., in: Psyche: A Journal of Entomology, volume 2017, pages 1-18, ISSN 0033-2615, 2017. [DOI]

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Response of cassava and yam to cryopreservation using the V-Cryo plate technique, Dada, A. O.*, University of Ibadan, 2020.

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Results of a global online expert survey: major constraints, opportunities, and trends for yam production and marketing and priorities for future RTB yam research. RTB working paper 2014-4, Abdoulaye, T., Alene, A., Rusike, J. and Akinola, A., RTB working paper 2014-4, 2014.

Retention of iron and zinc in yam flour and boiled yam processed from white yam (D. rotundata) varieties, Maziya-Dixon, B., Alamu, E. O., Wireko-Manu, F. D.* and Asiedu, R., in: Food Science & Nutrition, volume 5, number 3, pages 662-668, ISSN 2048-7177, 2017. [DOI]

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Scale insects on yams in Benin: diversity, infestation levels and farmers' knowledge and perceptions, Goergen, G ., Dossou, R.*, Asiedu, R. and Hanna, R., Abstract (Poster) in Book of Abstracts of the 11th Triennial Symposium of ISTRC-AB, held at Memling Hotel, Kinshasa. 4-8 October, 2010.

Screening of F1 mapping population of yam (Dioscorea alata) for resistance to anthracnose (Colletotrichum gloeosporioides) in the screenhouse and field, Nwadili, C., Bandyopadhyay, R., Bhattacharjee, R., Augusto, J., Lopez-Montes, A. and Onyeka, T. J.*, Abstract in First Global Conference on Yam 'to harness research innovations to unleash the potential of yam', 3-6 October, 2013 Accra, Ghana, 2013.

Screening of new improved water yam (Dioscorea alata) genotypes of the preparation of amala in Nigeria, Ukpabi, U. J.*, Omodamiro, J. G.*, Ikeorgu, J.* and Asiedu, R., 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 259-265, ISTRC-AB, 2010.

Screening of raw yam tubers from existing breeding lines with potential high-content for iron and zinc, Maziya-Dixon, B., Asiedu, R. and Okechukwu, R., Abstract (Poster) in Book of Abstracts of the 11th Triennial Symposium of ISTRC-AB, held at Memling Hotel, Kinshasa. 4-8 October, 2010.

Screening of water yam (Dioscorea alata L.) genotypes for reactions to viruses in Nigeria, Odu, B., Asiedu, R., Shoyinka, S.* and Hughes, J., in: Journal of Phytopathology, volume 154, number 11-12, pages 716-724, ISSN 0931-1785, 2006.

Screening plant materials for resistance to the yam nematode (Scutellonema bradys), Oluwatayo, J.*, Asiedu, R. and Adesiyan, S. O.*, in: African Journal of Root and Tuber Crops, volume 8, number 2, pages 34-40, ISSN 1118-2075, 2010.

Screening yams (Dioscorea spp.) for organoleptic quality, Adeniji, M. and Asiedu, R., 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 438-441, 2003.

Search for Scutellonema bradys resistance in yams (Dioscorea spp.), Kwoseh, C.*, Plowright, R., Bridge, J. and Asiedu, R., in: Journal of Science and Technology, volume 27, number 3, pages 33-42, 2007.

Secondary metabolites content may clarify the traditional selection process of the greater yam cultivars (Dioscorea alata L.), Lebot, V., Malapa, R.*, Abraham, K.*, Molisale, T.*, Van Kien, N.*, Gueye, B. and Waki, J.*, in: Genetic Resources and Crop Evolution, volume 65, pages 1699-1709, ISSN 0925-9864, 2018. [DOI]

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Seed longevity evaluation and genome-wide association studies on some nutritional traits of African yam bean, Oluwole, O. O.*, Covenant University, 2023.

Seed metrics for genetic and shape determinations in African yam bean [Fabaceae] (Sphenostylis stencarpa Hochst. Ex. A. Rich.) harms, Adewale, B. D., Kehinde, O. B.*, Aremu, C. O.*, Popoola, J. O. and Dumet, D., in: African Journal of Plant Science, volume 4, number 4, pages 107-115, ISSN 1996-0824, 2010.

Seed transmission of viruses in Dioscorea yams, Kumar, P. L., Lopez-Montes, A. and Ayodeji, O., Abstract, P. 368 in the Book of Abstracts, 16th Triennial Symposium of the International Society for Tropical Root Crops (ISTRC), 23 - 28 September, 2012.

Seed viability, seedling growth and yield in white Guinea yam, Norman, P. E., Danquah, A.*, Asfaw, A., Tongoona, P.*, Danquah, E.* and Asiedu, R., in: Agronomy, volume 11, number 1: 2, pages 1-9, ISSN 2073-4395, 2020. [DOI]

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Seed yam (Dioscorea rotundata Poir) production, storage, and quality in selected yam zones of Nigeria, Aighewi, B. A.*, Akoroda, M. O.* and Asiedu, R., in: African Journal of Root and Tuber Crops, volume 5, number 1, pages 20-23, 2002.

Seed yam production from minisetts: a training manual, Aighewi, B., Maroya, N. and Asiedu, R., 2014.

Seed yam production from presprouted minisetts with varied thickness of storage parenchyma, Aighewi, B., Akoroda, M. and Asiedu, R., in: African Journal of Root and Tuber Crops, volume 5, number 2, pages 21-24, 2003.

Seed yam production from whole tubers versus minisetts, Aighewi, B., Maroya, N., Asiedu, R., Aihebhoria, D., Balogun, M. and Mignouna, D., in: Journal of Crop Improvement, volume 34, number 6, pages 858-874, ISSN 1542-7528, 2020. [DOI]

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Seed yam production using high-quality minitubers derived from plants established with vine cuttings, Aighewi, B., Maroya, N., Kumar, P. L., Balogun, M., Aihebhoria, D., Mignouna, D. and Asiedu, R., in: Agronomy, volume 11, number -: 978, pages 1-12, ISSN 2073-4395, 2021. [DOI]

Selection criteria and yield stability in a large collection of African yam bean [Sphenostylis stenocarpa (Hochst ex. A. Rich) Harms] accessions, Olomitutu, O. E., Abe, A.*, Paliwal, R., Abberton, M. and Oyatomi, O., in: Plant Genetic Resources-Characterization and Utilization, pages 1-11, ISSN 1479-2621, 2025. [DOI]

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Sensory evaluation of amala from improved water yam (Dioscorea alata) genotypes in Nigeria, Ukpabi, U. J.*, Omodamiro, R. M.*, Ikeorgu, J.* and Asiedu, R., in: African Journal of Biotechnology, volume 7, number 8, pages 1134-1138, ISSN 1684-5315, 2008.

Keywords:

Dioscorea; Enzymatic oxidation; farmer participatory breeding; Ghana; yams

Sensory texture profiling and development of standard rating scales for pounded yam, Otegbayo, B.*, Aina, J., Sakyi-Dawson, E., Bokanga, M. and Asiedu, R., in: Journal of Texture Studies, volume 36, pages 478-488, 2005.

Serological and RT-PCR evaluation of African yam bean (Sphenostylis stenocarpa (Hochst ex. A. Rich) Harms) accessions to viral resistance under field condition, Ihenacho, J., Kehinde, I. A.*, Ayo-John, E.*, Bankole, P.*, Abberton, M., Kumar, P. L., Adegboyega, T. T.* and Oyatomi, O., in: Scientific Reports, volume 14, number -: 9708, pages 1-8, ISSN 2045-2322, 2024. [DOI]

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.

Sexual propagation: a new approach to improvement of yam Dioscorea rotundata, Sadik, S. and Okereke, O. U., 1974.

Simple sequence repeat markers and endogenous phytochemicals associated with somatic embryogenesis in Dioscorea alata L. and Dioscorea rotundata poir, Ossai, C. O.*, University of Ibadan, 2021.

Simple sequence repeat-based mini-core collection for white Guinea yam (Dioscorea rotundata) germplasm, Pachakkil, B., Yamanaka, S., Girma Tessema, G., Matsumoto, R., Tamiru-Oli, M., Bhattacharjee, R., Abberton, M., Muranaka, S., Asiedu, R., Terauchi, R. and Takagi, H., in: Crop Science, pages 1-12, ISSN 0011-183X, 2021. [DOI]

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Socio-economic determinants of adoption of yam minisett technology by women farmers in Abia State of Nigeria, Ironkwe, A., Asiedu, R. and Ekwe, K., in: Journal of Research in Agriculture, volume 3, number 4, pages 1-7, 2006.

Socio-economic determinants of yam varieties adoption: probit analysis in three major's yam production areas of Cote d'Ivoire, in: Proceedings of 9th ISTRC-AB symposium, 2007.

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Yam (Dioscorea ssp.) domestication by the Nago and Fon ethnic groups in Benin, Mignouna, H. and Dansi, A.*, in: Genetic Resources and Crop Evolution, volume 50, pages 519-528, ISSN 0925-9864, 2003.

Yam (Dioscorea) husbandry: cultivating yams in the field or greenhouse, Mignouna, H. D.*, Abang, M. M., Asiedu, R. and Geeta, R., in: Cold Spring Harbor Protocols, volume 4, number 11, pages 1-3, ISSN 1559-6095, 2009. [DOI]

Yam anthracnose disease: field symptoms and laboratory diagnostics, Ayodele, M., Hughes, J. and Asiedu, R., in: Proccedings of the 9th ISTRC-AB symposium, Mombasa, Kenya, 2007.

Yam based farming systems in the humid tropics of southern Nigeria, Bachmann, E. and Winch, F. E., 1979.

Yam breeders breakthrough, IITA, , in: African Farming and Food Processing, number SEP-OCT, pages 32, ISSN 0266-8017, 1994.

Yam breeding, Asiedu, R., in: Paper presented at conference on Plant Virology in sub-Saharan Africa, 4-8 June, 2001, pages 16, International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria, 2001.

Yam breeding, Asiedu, R., Mignouna, H., Odu, B. and Hughes, J., in: Plant Virology in sub-Saharan Africa: proceedings of a conference organized by IITA, 4-8 June 2001., pages 466-475, International Institute of Tropical Agriculture (IITA), 2003.

Yam breeding in IITA, Shiwachi, H ., in: Agriculture and Horticulture, volume 77, pages 801-803, 2002.

Yam characterization and evaluation: problems and prospects, Ng, N. Q., Asiedu, R. and Mignouna, H., in: Paper presented at the regional workshop for the conservation and utlization of cassava, sweetpotato and yam germplasm in sub-Saharan Africa, organized by CIP/IITA/IPGRI in Nairobi, 11-13 November, 1997, 1997.

Yam chip food sub-sector: hazardous practices and presence of aflatoxins in Benin, Mestres, C., Bassa, C. F., Fagbohoun, E.*, Nago, M., Hell, K., Vernier, P., Champiat, D., Hounhouigan, J. and Cardwell, K., in: Journal of Stored Products Research, volume 40, pages 575-585, ISSN 0022-474X, 2004.

Yam dormancy: potential mechanisms for its manipulation, Barker, D. J., Keatinge, J. and Asiedu, R., in: Tropical Science, volume 39, number 3, pages 168-177, ISSN 0041-3291, 1999.

Yam farming as a business, Phillips, D., Kleih, U. K., Otoo, E.*, Boadu, P.*, Ogbonna, M.*, Etudaiye, H.*, Mignouna, D. and Siwoku, B.*, Abstract, P. 37 in the program and book of abstracts of the First Global Conference on Yam 'to harness research innovations to unleash the potential of yam', 3-6 October, 2013 Accra, Ghana, 2013.

Yam field genebank management at IITA, Ng, N. Q. and Ng, S. Y. C., pages 16-18, IPGRI, 1999.

Yam field genebank management at IITA, Ng, S. Y. C. and Ng, N. Q., pages 124-126, IPGRI, 1999.

Yam germplasm conservation and screening in Uganda, Kagoda, F., Coyne, D., Asiedu, R., Wanyera, N., Mudiope, J., Dusabe, J. and Kyamuhangire, W., in: 7th African Crop Science conference, pages 245-249, 2005.

Yam improvement for income and food security in west Africa: effectiveness of a multi-disciplinary and multi-institutional team-work, Maroya, N., Asiedu, R., Kumar, P. L., Mignouna, D., Lopez-Montes, A., Kleih, U. K., Phillips, D., Ndiame, F.*, Ikeorgu, J.* and Otoo, E.*, in: Journal of Root Crops, volume 40, number 1, pages 85-92, ISSN 0378-2409, 2014.

Yam improvement through sexual propagation, Sadik, S., 1975.

Yam in Africa and the World: Trends of Vital Statistics, 1965-84, Gebremeskel, T. and Oyewole, B., 1987.

Yam nematodes as production constraints in Ghana: a socio-economic perspective, Whedie, B. O.*, Gurmu, M., Nyaku, S. T.*, Brentu, F. C.*, Ankrah, D.*, Dzidzienyo, D. K.* and Bhattacharjee, R., in: Sustainability, volume 17, number 2: 482, pages 1-20, ISSN 2071-1050, 2025. [DOI]

Yam pectin and textural characteristics: a preliminary study, Effah-Manu, L.*, Maziya-Dixon, B., Wireko-Manu, F. D.*, Agbenorhevi, J. K.* and Oduro, I.*, in: International Journal of Food Properties, volume 25, number 1, pages 1591-1603, ISSN 1094-2912, 2022. [DOI]

Yam production and its future prospects, Hahn, S. K., Osiru, D.*, Akoroda, M. and Otoo, J., in: Outlook on Agriculture, volume 16, pages 105-110, 1987.

Yam production in Africa and the challenge against it's problems, Kikuno, H ., in: Journal of the Agricultural Society of Japan, pages 57-62, 2009.

Yam production in Africa and the challenge against its problems, Kikuno, H ., in: Journal of the Agricultural Society of Japan, volume No. 1526, pages 57-62, 2009.

Yam production in the derived coastal savanna zone of Ghana - Past, Present and Future Prospects, Otoo, E.*, Asiedu, R., Ennin, S.* and Ekpe, E.*, in: Agricultural and Food Science Journal of Ghana, volume 4, pages 301-315, 2005.

Yam production in the derived Coastal Savannah zone of Ghana - past, present and future prospects, Otoo, E.*, Asiedu, R., Ennin, S.* and Ekpe, E.*, in: Proceedings of 9th ISTRC-AB symposium, pages 275-284, Mombasa, Kenya, 2007.

Yam propagation using 'Aeroponics' technology, Maroya, N., Balogun, M., Asiedu, R., Aighewi, B., Kumar, P. L. and Augusto, J., in: Annual Research and Review in Biology, volume 4, number 24, pages 3894-3903, ISSN 2231-4776, 2014.

Yam screening for suitability in food product development, Onadipe, O. O., Maziya-Dixon, B. and Asiedu, R., 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 359-360, ISTRC-AB, 2010.

Yam seed system characteristics in Nigeria: local practices, preferences, and the implications for seed system interventions, Stuart, E., Asfaw, A., Adebola, P. O., Maroya, N., Edemodu, A., Adeosun, T., Asiedu, R. and Almekinders, C. J., in: Outlook on Agriculture, volume 50, number 4, pages 455-467, ISSN 0030-7270, 2021. [DOI]

Yam storage problems: a breeder's perspective, Asiedu, R. and Wanyera, N., in: Paper present at a workshop on pests and pathogens of yams in storage, IITA, Ibadan, May 25, 1995, 1995.

Yam tuber and maize grain yield response to cropping system intensification in south-west Nigeria, Enesi, R., Hauser, S., Lopez-Montes, A. and Osonubi, O.*, in: Archives of Agronomy and Soil Science, volume 64, number 7, pages 953-966, ISSN 0365-0340, 2018. [DOI]

Yam urban market characteristics and consumer preferences in Bukavu City, eastern D.R. Congo, Mondo, J.*, Mugisho, G. M.*, Chuma, G. B.*, Agre, A. P., Banda, V. R., Adebola, P. O. and Asfaw, A., in: Frontiers in Sustainable Food Systems, volume 9, number -: 1553876, pages 1-14, ISSN 2571-581X, 2025. [DOI]

Yam viruses in Nigeria, Odu, B., Shoyinka, S.*, Hughes, J., Asiedu, R. and Oladiran, A., in: Root crops in the 21st century: proceedings of the 7th Triennial Symposium of the International Society for Tropical Root Crops - Africa Branch (ISTRC-AB), Cotonou, Benin, 11-17 October 1998, pages 631-633, ISTRC-AB; Government of Benin, 2001.

Yam: a cash crop in West Africa: YIIFSWA working paper series, No. 3, Mignouna, D., Akinola, A., Suleman, I., Nweke, F. and Abdoulaye, T., YIIFSWA working paper series, 2014.

Yam: economic and definitely profitable to produce, pages 78-80, The Courier, 1987.

Yams, Mignouna, H., Abang, M. and Asiedu, R., volume 3, pages 271-296, chapter 15, Springer-Verlag, 2007.

Yams, Asiedu, R., Wanyera, N., Ng, S. Y. C. and Ng, N. Q., pages 57-66, Cambridge University Press, Cambridge, UK, 1997.

Yams, Arnau, G., Abraham, K.*, Sheela, M.N.*, Chair, H., Sartie, A. M. and Asiedu, R., Root and Tuber Crops, volume 7, pages 127-148, chapter 4, Springer, ISBN 978-0-387-92764-0, 2010. [DOI]

Yams in Africa: securing the future through research on a traditional favorite, Asiedu, R., in: ISTRC Newsletter, volume 23, pages 5-7, 1996.

Yams in the Tanzanian food and farming systems: implications for research and development, Kapinga, N., Wanyera, N., Asiedu, R., Chirimi, B. and Kaare, S., in: Root crops in the 21st century: proceedings of the 7th Triennial Symposium of the International Society for Tropical Root Crops - Africa Branch (ISTRC-AB), Cotonou, Benin, 11-17 October 1998, pages 230-236, ISTRC-AB; Government of Benin, 2001.

Yams in West Africa: production and collaborative research, Asiedu, R., 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 173-176, 2003.

Yield and micronutrient uptake of white yam (Dioscorearotundata L. Poir) as influence by organomineral fertilizer ammendment on an alfisol in Ibadan South western Nigeria, Lawal, O. I.*, Adeoye, G.*, Asiedu, R., Ojeniyi, S. O.*, Atayese, M. O.* and Olaiya, A.O.*, Abstract, P. 164 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.

Yield stability of water yam (Dioscorea alata L) landraces compared to improved varieties across multiple environments and their culinary qualities in the Republic of Benin, Dansi, M.*, Loko, Y.*, Codija, E*, Fakorede, J.*, Agre, A. P., Amegan, A.*, Adomou, A.*, Dassou, G. H.* and Dansi, A.*, in: JSFA Reports, pages 1-11, ISSN 2573-5098, 2025. [DOI]

YIIFSWA research brief: improving yam micropropagation series 2. Development of micropropagation system for yam (Dioscorea spp.) using somatic embryogenesis, Ossai, C., Balogun, M., Maroya, N. and Asiedu, R., YIIFSWA-II research brief: series 2, 2018.

Ayamba, B. E.*
Ayamga, M.*
Bwamayama, L.*
Byamugisha, D.*
Byamukama, E.
Byamungu, G.*
Byamungu, M.
Cyamweshi, A. R.*
Gyamenah, J.
Gyamfi, I.
Gyampoh, B.*
Hakoyama, S.
Hotsonyame, G. K.
Iiyama, M.
Kanyamuka, J. S.
Koyama, M.
Kyamanywa, S.*
Kyamuhangire, W.
Lukyamuzi, S.
Maruyama, M.
Mwakanyamale, D. F.
Nakayama, O.
Nyamador, S. W.*
Nyamai, M.*
Nyamangara, J.
Nyambo, B.
Nyamuhirwa, D. A.
Nyamukondiwa, C.*
Nyamutoka, P.*
Nyamutukwa, S.*
Onyambu, G. K.*
Subrahmanyam, K
Wanyama, C.*
Wanyama, I.
Wembonyama, F.*
Yamaguchi, J.
Yamaguchi, Y.
yamaji, e
Yamakawa, T.
Yamamoto, K.
Yamanaka, S.
Yamasaki, M.
Yamauchi, F.
Yamauchi, M.
Yameogo, V.
Yami, M.
Yami, M.*
Yamkoulga, M.*
Yamoah, C.
Yamoah, C. F.
Yoneyama, K.
Yoneyama Koichi,

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.
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.
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.
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.
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.
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.

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