Titles (101)Keywords (1)Abstracts (7)
A summary of maize resistance breeding, Efron, Y., Fajemisin, J., Kim, S. K., Bjarnason, M., Pham, H. N. and Makonnen, D., in: Annual Plant Resistance to Insects Newsletter, volume 10, pages 68-69, 1984.
 
Advances in breeding for host plant resistance to banana diseases, Vuylsteke, D. and Hartman, J., in: Mobilizing IPM for sustainable banana production in Africa: proceedings of a workshop on banana IPM, Nelspruit, South Africa, 23-28 November 1998, pages 165-175, INIBAP, 1999.
 
Advances in breeding for resistance to cassava mosaic disease in sub-Saharan Africa, Whyte, J., Mahungu, N., Khizzah, B., Fregene, M.*, Akano, A. and Gedil, M., pages 15, International Institute of Tropical Agriculture (IITA), 2001.
 
Advances in breeding maize for resistance to Striga at International Institute of Tropical Agriculture, in: African Striga Control Project Planning Workshop, 2-6 June 2004, Ouagadougou, Burkina Faso, 2004.
 
Advances in screening methods and breeding for resistance to downy mildew and stem borers in maize, Kling, J., Cardwell, K., Bosque-Perez, N. A. and Kim, S. K., in: IITA Research, volume 14/15, pages 7-13, ISSN 1115-3067, 1997.
 
Application of fast technology for analysis (FTA) for sampling and recovery of deoxyribonucleic acid (DNA) for molecular characterization of cowpea breeding lines for Striga resistance, Omoigui, L.*, Ishiyaku, M.*, Ousmane, B., Gowda, B. and Timko, M. P., in: African Journal of Biotechnology, volume 10, number 85, pages 19681-19986, ISSN 1684-5315, 2011. [DOI]
 
Assessment of multiple disease resistance in select current cassava breeding varieties in Nigeria, Okechukwu, R., Kulakow, P., Rabbi, I. Y. and Dixon, A.*, Abstract, P. 130 in the Book of Abstracts, 16th Triennial Symposium of the International Society for Tropical Root Crops (ISTRC), 23 - 28th September, 2012.
 
Awareness of plant-parasitic nematodes, and preferred maize varieties, among smallholder farmers in East and Southern Uganda: implications for assessing nematode resistance breeding needs in African maize, Kagoda, F., Derera, J.*, Tongoona, P.* and Coyne, D., in: International Journal of Pest Management, volume 56, number 3, pages 217-222, ISSN 0967-0874, 2010.
 
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]
 
Breeding cassava and sweet potato for pest and disease resistance in Africa, Hahn, S. K., Caveness, F. E., Lema, K. and Theberge, R. L., pages 66-72, International Institute of Tropical Agriculture (IITA), 1990.
 
Breeding cassava for brown streak resistance: regional cassava variety development strategy based on farmers and consumer preferences, Kanju, E., Masumba, E.*, Masawe, M., Tollano, S., Muli, B., Zacharias, A., Mahungu, N., Khizzah, B., Whyte, J. and Dixon, A., in: Proceedings of the 13th ISTRC-Govt symposium, pages 95-101, Arusha, Tanzania, 2007.
 
Breeding cassava for brown streak resistance: regional cassava variety development strategy based on farmers'/consumers' preferences, Kanu, E., Masumba, E.*, Tollano, S., Muli, B., Zacharias, A., Mahungu, N., Khizzah, B. and Whyte, J., in: Paper presented at: 13th Symposium of the International Society of Tropical Root Crops (ISTRC); 10-14 November, International Conference Center, Arusha, Tanzania, 2003.
 
Breeding cassava for multiple pest resistance in Africa, Hahn, S. K., Dixon, A. and Asiedu, R., in: Integrated pest management in root and tuber crops: proceedings of a workshop held at the Biological Control Center for Africa, 10-14, Dec. 1990, Cotonou, Republic of Benin, International Institute of Tropical Agriculture (IITA), 1991.
 
Breeding cassava for multiple pest resistance in Africa, Mahungu, N., Dixon, A. and Kumbira, J. M.*, in: African Crop Science Journal, volume 2, number 4, pages 539-552, ISSN 1021-9730, 1994.
 
Breeding cassava for resistance to Cassava Bacterial Blight., Hahn, S. K., in: Proceedings on an Interdisciplinary Workshop, IITA, Ibadan, Nigeria. June 26 -30, 1978, pages 34, Centre for Overseas Pest Research (Ministry of Overseas Development), London, UK., IITA, 1978.
 
Breeding cassava for resistance to cassava mosaic disease, Hahn, S. K. and Leuschner, K., in: Euphytica, volume 29, number 3, pages 673-683, ISSN 0014-2336, 1980.
 
Breeding cowpea for resistance to insect pests: attempted crosses between cowpea and Vigna vexillata, Fatokun, C., pages 52-61, 2002.
 
Breeding cowpea for resistance to Striga gesnerioides in the Nigerian dry savannas using marker-assisted selection, Omoigui, L., Kamara, A., Moukoumbi, Y. D., Ogunkanmi, L. A.* and Timko, M. P., in: Plant Breeding, volume 136, number 3, pages 393-399, ISSN 0179-9541, 2017. [DOI]
 
Breeding cowpea varieties for resistance to multiple strains of Striga gesnerioides, Singh, B. and Adeleke, R., pages 71, American Society of Agronomy, 1996.
 
Breeding cowpea varieties for resistance to Striga gesnerioides and Alectra vogelii, Singh, B., pages 154-163, 2002.
 
Breeding cowpea varieties with combined resistance to Striga gesnerioides and Alectra vogelii, Singh, B., in: Third International Crop Science Congress Book of Abstracts. Gressen, Germany: European Society of Agronomy, pages 135, 2000.
 
Breeding cowpea [Vigna unguiculata (L.) for resistance to striga (Striga gesnerioides) using molecular tools, Koura, A. A.*, Kwame Nkrumah University of Science and Technology, 2024.
 
Breeding early and extra-early maize for resistance to biotic and abiotic stresses in sub-Saharan Africa, Badu-Apraku, B. and Fakorede, M.*, volume 37, pages 115-199, chapter 3, John Wiley & Sons, Inc, 2013.
 
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]
 
Breeding for bruchid resistance in cowpea, Singh, B. and Singh, S. R., pages 219-228, 1990.
 
Breeding for durable resistance in tropical maize with special reference to maize streak virus, Fajemisin, J., Kim, S. K. and Alam, M. S., in: Paper read at FAO/IITA Expert Consultation on Durable Resistance Breeder,, 1982.
 
Breeding for fungal resistance in Musa, Hartman, J. and Vuylsteke, D., in: Genetics and breeding for crop quality and resistance: proceedings of the 15th EUCARPIA Congress, Viterbo, Italy, 20-25 September 1998, pages 83-92, 1999.
 
Breeding for host plant resistance of cassava green spider mite (CGM) (Mononychellus tanajoa, Bondar) at IITA, Kanno, H., Dixon, A., Asiedu, R. and Hahn, S. K., in: The role of root crops in regional food security and sustainable agriculture: proceedings of the Fourth Eastern and Southern Africa Regional Root Crops Workshop, 29 Oct - 2 Nov. 1990, Mansa, Zambia, pages 99-102, 1991.
 
Breeding for insect resistance in cowpea, Singh, B. and Singh, S. R., in: Paper presented at American Society of Agronomy Annual meeting, 28 November-3 December1982, Anaheim, Calif, USA, 1982.
 
Breeding for resistance to biotic stresses in food legumes, Sarker, A., Singh, B., Malhotra, R., Gupta, S., Khalil, S., Dixit, G., Wang, T, Warkentin, T. and Erskine, W, in: The 4th International Food Legumes Conference, New Delhi, India, Oct. 18-22, 2005.
 
Breeding for resistance to cassava bacterial blight, 1977.
 
Breeding for resistance to cassava bacterial blight, Hahn, S. K. and Howland, A. K., in: Cassava bacterial blight: report of an interdiciplinary workshop held at IITA, Ibadan, Nigeria, 1-4 November 1976, pages 23, International Development Research Centre (IDRC), Ottawa, Canada, 1977.
 
Breeding for resistance to cassava bacterial blight at IITA: proceedings of the First Workshop on Cassava Bacterial Blight in Nigeria, Umudike, 28th April - 1st May 1974, Hahn, S. K., Howland, A. K. and Okoli, C., in: Proceedings of the First Workshop on Cassava Bacterial Blight in Nigeria, held at the Federal Agrictural Research and Training Station, Umudike, 28th April - 1st May 1974 edited by Okpala, E. U. and H. J. Glaser, pages 11-14, 1974.
 
Breeding for resistance to cassava mosaic: proceedings of Cassava Mosaic Workshop, International Institute of Tropical Agriculture, Ibadan, Nigeria, 11-12 December, 1972, Hahn, S. K. and Howland, A. K., in: Proceedings of Cassava Mosaic Workshop, International Institute of Tropical Agriculture, Ibadan, Nigeria, 11-12 December, 1972, pages 37-39, 1973.
 
Breeding for resistance to maize streak virus: a multidisciplinary team approach, Efron, Y., Kim, S. K., Fajemisin, J., Mareck, J. H., Tang, C. Y., Dabrowski, Z. T., Rossel, H. W., Thottappilly, G. and Buddenhagen, I. W., in: Plant Breeding, volume 103, pages 1-36, 1989.
 
Breeding for resistance to Striga and Alectra in cowpea, Singh, B. and Emechebe, A., in: Proceedings, Fifth International Symposium on Parasitic Weeds, 24-30 June 1991, Nairobi, Kenya, edited by J.K. Ransom, L.J. Musselman, A.D. Worsham, and C. Parker, pages 303-305, International Maize and Wheat Improvement Center (CIMMYT), 1991.
 
Breeding for rust resistance in soybean at the International Institute of Tropical Agriculture, Nigeria, Adeleke, R., Asafo-Adjei, B.*, Twizeyimana, M., Ojiambo, P., Paul, C., Hartman, G., Dashiell, K. and Bandyopadhyay, R., 2006.
 
Breeding investigations for Striga hermonthica resistance in tropical maize (Zea mays L.) in Nigeria, Stanley, A. E.*, University of Ghana, 2020.
 
Breeding maize (Zea mays) for Striga resistance: past, current and prospects in sub-Saharan Africa, Yacoubou, A. M., Wallis, N. Z.*, Menkir, A., Zinsou, V.*, Onzo, A.*, Garcia-Oliveira, A. L.+, Meseka, S. K., Mengesha Abera, W., Gedil, M. and Agre, A. P., in: Plant Breeding, volume 140, number 2, pages 195-210, ISSN 0179-9541, 2021. [DOI]
 
Breeding maize for broad-based resistance to Striga hermonthica, Menkir, A., Badu-Apraku, B., Yallou, C.*, Kamara, A. and Ejeta, G., pages 99-114, World Scientific Publishing, 2007.
 
Breeding maize for field resistance to striga in Africa, Khadr, F. H., Kim, S. K., Parkinson, V., Fajemisin, J. and Efron, Y., Las Vegas, 1984.
 
Breeding maize for resistance to mycotoxins at IITA, Menkir, A., Brown, R., Bandyopadhyay, R., Chen, Z. Y. and Cleveland, T. E., pages 277-286, chapter 23, CABI Publishing, ISBN 978-1-84593-082-0, 2008.
 
Breeding maize for resistance to mycotoxins at the International Institute of Tropical Agriculture, Menkir, A., Bandyopadhyay, R., Chen, Z. and Cleveland, T., in: Workshop on Reducing Impact of Mycotoxins in Tropical Agriculture with emphasis on health and trade in Africa, 13-16 September 2005, 2006.
 
Breeding of Cassava for Resistance to Cassava Bacterial Blight (CBB). PANS. 1978, Hahn, S. K., 1978.
 
Breeding of Cassava for Resistance to Cassava Mosaic CMD and Bacterial Blight CBB Diseases in Africa, Louvain-la-Neuve, 1978.
 
Breeding peanut for resistance to aflatoxin contamination at ICRISAT, Nigam, S., Waliyar, F., Aruna, R., Reddy, S., Kumar, P. L., Craufurd, P., Diallo, A.*, Ntare, B. R. and Upadhyaya, H., in: Peanut Science, volume 36, number 1, pages 42-49, ISSN 0095-3679, 2009.
 
Breeding strategies to improve maize (Zea mays L.) for downy mildew (Perenosclerospora sorghi) resistance in west and central Africa, Ajala, S., Kling, J., Menkir, A., Cardwell, K. and Adetoro, J. A., in: Book of Abstracts of the 5th Biennial Conference of the African Crop Science Society, Lagos, Nigeria, 21-26 Oct., pages 63, 2001.
 
Breeding sweet potato for resistance to weevils, Hahn, S. K. and Leuschner, K., in: Paper presented at the International symposium on sweet potato, AVRDC, 23-27 March 1981, 1981.
 
Breeding value for Cassava Mosaic Disease resistance analysed in a seedling nursery, Kulakow, P., Bakare, M. A., Agbona, A ., Parkes, E., Ceballos, H., Rabbi, I. Y., Olaniyo, E., Andrew, I., Iluebbey, P., Kumar, P. L. and Nokoe, K.*, Abstract in World Congress on Root & Tuber Crops (WCRTC), Nanning, Guangxi, China, January 18-22, 2016.
 
Cassava breeding for resistance to cassava mosaic disease, Hahn, S. K., Terry, E. R. and Leuschner, K., 1980.
 
Cassava mosaic disease in sub-Saharan Africa: variations in the pathogen, sources of resistance and host-plant resistance breeding for sustainable control, Dixon, A., Ssemakula, G., Ogbe, F., Ariyo, O., Lokko, Y., Ilona, P. and Mkumbira, J., in: Proceedings of 9th ISTRC-AB symposium, pages 521-525, Mombasa, Kenya, 2007.
 
Cassava mosaic disease in sub-Saharan Africa: variations in the pathogen, sources of resistance, and host-plant resistance breeding for sustainable control, Dixon, A., Ssemakula, G., Ogbe, F., Ariyo, O., Lokko, Y., Ilona, P. and Mkumbira, J., in: Book of Abstracts of the 9th Triennial Symposium of the International Society for Tropical Root Crops-Africa Branch, 31 October-5 November 2004, Mombasa, Kenya, 2004.
 
Comparative N-response of maize cultivars developed for drought and Striga resistance during three breeding eras: Proceedings of the CSSA, ASA, and SSSA International Annual Meetings, Badu-Apraku, B., Fakorede, M.*, Oyekunle, M., Akinwale, R.* and Oluwaranti, A.*, CSSA, ASA, and SSSA, 2012.
 
Conversion and validation of uniplex SNP markers for selection of resistance to Cassava Mosaic Disease in Cassava breeding programs, Ige, A. D., Olasanmi, B.*, Mbanjo, E., Kayondo, S. I., Parkes, E., Kulakow, P., Egesi, C., Bauchet, G. J., Ng, E., Ng, N. Q., Lopez-Lavalle, L. A., Ceballos, H. and Rabbi, I. Y., in: Agronomy, volume 11, number 3: 420, pages 1-17, ISSN 2073-4395, 2021. [DOI]
 
Detection of molecular markers linked to Ry genes in potato germplasm for marker-assisted selection for extreme resistance to PVY in AAFC's potato breeding program, Nie, X., Lalany, F., Dickison, V., Wilson, D., Singh, M., De Koeyer, D. and Murphy, A., in: Canadian Journal of Plant Science, volume 96, number 5, pages 737-742, ISSN 0008-4220, 2016. [DOI]
 
Developing maize resistance to aflatoxin contamination through breeding and molecular discovery, Brown, R. L., Menkir, A., Chen, Z., Luo, M., Omolehin, O. and Bhatnagar, D., Abstract in GMMI 2016: 3rd Biennial Genetics of Maize Microbe Interactions Workshop, Texas A&M University College Station, TX, March 30 - April 2, 2016.
 
Development and validation of genomic tools for marker-assisted breeding of cassava mosaic disease resistance in cassava (Manihot esculenta), Gedil, M., Otti, G., Enok, L. and Kumar, P. L., in: Tropical Roots and Tuber Crops and the Challenges of Globalization and Climate Changes=Plantes a Racines et Tubercules Tropicales et les Defis de la Mondialisation et du Changement Climatique: Proceedings of the 11th triennial Symposium of the ISTRC-AB, pages 179-186, ISTRC-AB, Ibadan, Nigeria, 2012.
 
Development and validation of genomics tools for marker-assisted breeding of mosaic disease resistance in cassava, Gedil, M., Otti, G. and Enok, L., Abstract (Poster) in Book of Abstracts of the 11th Triennial Symposium of ISTRC-AB, held at Memling Hotel, Kinshasa. 4-8 October, 2010.
 
Development and validation of genomics tools for marker-assisted breeding of mosaic disease resistance in cassava, Gedil, M., Otti, G. and Enok, L., Abstract (Poster) in Book of Abstracts of the 11th Triennial Symposium of ISTRC-AB, held at Memling Hotel, Kinshasa. 4-8 October, 2010.
 
Discovery and characterization of proteins associated with Aflatoxin-resistance: evaluating their potential as breeding markers, Brown, R., Chen, Z. Y., Warburton, M., Luo, M., Menkir, A., Fakhoury, A. and Bhatnagar, D., in: Toxins, volume 2, pages 919-933, ISSN 2072-6651, 2010.
 
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]
 
Evaluation of advanced peanut breeding lines for resistance to late leaf spot and rust, Waliyar, F. and Kumar, P. L., in: Proceedings, 39th Annual American Peanut Research and Education Society (APRES), July 10-13, 2007, Birmingham, Alabama, USA, APRES, 2007.
 
Evaluation of progress on breeding for combined resistance to downy mildew and maize streak virus. 1. Late maturing varieties, Fajemisin, J., Kim, S. K., Efron, Y. and Khadr, F. H., University of Ife, 1984.
 
Evaluation of sorghum germplasm used in US breeding programmes for sources of sugary disease resistance, Dahlberg, J., Bandyopadhyay, R., Rooney, W., Odvody, G. and Madera-Torres, P., in: Plant Pathology, volume 50, pages 681-689, 2001.
 
Evolution of disease resistance breeding in maize in Africa, Fajemisin, J., Efron, Y. and Kim, S. K., pages 385, 1988.
 
Fine mapping of Msv1, a major QTL for resistance to Maize Streak Virus leads to development of production markers for breeding pipelines, Nair, S. K., Babu, R., Magorokosho, C., Mahuku, G ., Semagn, K., Beyene, Y., Das, B., Makumbi, D.+, Kumar, P. L., Olsen, M. and Boddupalli, P. M., in: Theoretical and Applied Genetics, volume 128, pages 1839-1854, ISSN 0040-5752, 2015. [DOI]
 
Foliar and tuber late blight resistance in a Solanum tuberosum breeding population, Mayton, H., Griffiths, H., Simko, I., Cheng, S., Lorenzen, J., De Jong, W. and Fry, W. E., in: Plant Breeding, ISSN 0179-9541, 2009. [DOI]
 
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.
 
Genetic gains from selection for high grain yield and striga resistance in early maturing maize cultivars of three breeding eras under Striga infested and Striga-free environments: Proceedings of the CSSA, ASA, and SSSA International Annual Meetings., Badu-Apraku, B., Chabi, Y.* and Oyekunle, M., CSSA, ASA, and SSSA, 2012.
 
Genetic gains from selection for high grain yield and Striga resistance in early maturing maize cultivars of three breeding periods under Stiga-infested and Striga-free environments, Badu-Apraku, B., Yallou, C.* and Oyekunle, M., in: Field Crops Research, volume 147, pages 54-67, ISSN 0378-4290, 2013.
 
Genetic gains in grain yield under nitrogen stress following three decades of breeding for drought tolerance and Striga resistance in early maturing maize, Badu-Apraku, B., Fakorede, M.*, Oyekunle, M. and Akinwale, R.*, in: Journal of Agricultural Science, pages 1-15, ISSN 0021-8596, 2015. [DOI]
 
Genetic improvement of extra-early maize cultivars for grain yield and Striga resistance during three breeding eras, Badu-Apraku, B., Yallou, C.*, Haruna, A.*, Talabi, A. O., Akaogu, I. C., Annor, B. and Adeoti, A., in: Crop Science, pages 1-40, ISSN 0011-183X, 2016. [DOI]
 
High-resolution mapping of resistance to cassava mosaic geminiviruses in cassava using genotyping-by-sequencing and its implications for breeding, Rabbi, I. Y., Hamblin, M., Kumar, P. L., Gedil, M., Ikpan, A., Jannink, J. and Kulakow, P., in: Virus Research, volume 186, pages 87-96, ISSN 0168-1702, 2014. [DOI]
 
High-throughput field screening of Cassava Brown Streak Disease resistance for efficient and cost-saving breeding selection, Sikirou, M., Adetoro, N. A., Sheat, S., Musungayi, E.*, Mungangan, R.*, Pierre, M.*, Fowobaje, K. R., Dieng, I., Bamba, Z., Rabbi, I. Y., Mushoriwa, H . and Winter, S., in: Agronomy, volume 15, number 2: 425, pages 1-15, ISSN 2073-4395, 2025. [DOI]
 
Historical overview of breeding for durable resistance to maize streak virus for tropical Africa, Buddenhagen, I. W. and Bosque-Perez, N. A., in: South African Journal of Plant and Soil, volume 16, number 2, pages 106-111, ISSN 0257-1862, 1999.
 
Identification of cowpea (Vigna unguiculata (L.) Walp) breeding lines with multiple virus resistance, Ogunsola, K. E., Fatokun, C., Ilori, C. O.*, Atiri, G.* and Kumar, P. L., Abstract in Book of abstracts of the 36th annual conference of the Nigerian Society of Plant Protection (NSPP), 4 - 8 September, Futa, Nigeria., 2011.
 
IITA's maize breeding program in tropical Africa with special reference to maize streak virus resistance, Efron, Y., Kim, S. K., Singh, J. and Bjarnason, M., 1981.
 
Inbreeding enhances field resistance to cassava brown streak viruses, Tadeo, K.*, Vincent, K.*, Yona, B.*, Robert, K.* and Ferguson, M., in: Journal of Plant Breeding and Crop Science, volume 8, number 8, pages 138-149, ISSN 2006-9758, 2016. [DOI]
 
Measurement of the field response of Musa genotypes to Radopholus similis and Helicotylenchus multicinctus and the implications for nematode resistance breeding, Hartman, J., Vuylsteke, D., Speijer, P., Ssango, F., Coyne, D. and De Waele, D., in: Euphytica, volume 172, number 1, pages 139-148, ISSN 0014-2336, 2010. [DOI]
 
Molecular characterization of cowpea breeding lines for Striga resistance using FTA - technology, Omoigui, L.*, Ishiyaku, F. S.*, Boukar, O., Bhavani, B. and Timko, M. P., in: Innovative research along the cowpea value chain: proceedings of the Fifth World Cowpea Conference on improving livelihoods in the cowpea value chain through advancement in science, held in Saly, Senegal, 27 September -1 October 2010, pages 110-115, International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria, 2012.
 
Molecular characterization of cowpea breeding lines for Striga resistance using SCAR markers, Omoigui, L.*, Yeye, M.*, Ousmane, B., Gowda, B. and Timko, M. P., in: Journal of Agricultural Science and Technology B, volume 2, pages 362-367, ISSN 2161-6264, 2012.
 
Population and varietal development in maize for tropical Africa through resistance breeding, Fajemisin, J., Efron, Y., Kim, S. K., Khadr, F. H., Dabrowski, Z. T., Mareck, J. H., Bjarnason, M., Parkinson, V., Everett, L. and Daillo, A., Food and Agriculture Organization of the United Nations, Food and Agriculture Organization of the United Nations, 1984.
 
Preliminary results at IITA in breeding plantain for black sigatoka resistance in Africa, Swennen, R. and Vuylsteke, D., in: Proceedings, Ninth ACORBAT Meeting, edited by B. Anez, C. Nava, L. Sosa, and R. Jaramillo, 24-29 Sep 1989, pages 235-244, 1991.
 
Progress in breeding for resistance to maize stem borers sesamia calamistis and Eldana saccharina in West and Central Africa, Ajala, S., Kling, J., Schulthess, F., Cardwell, K. and Odiyi, A., in: Seventh Eastern and Southern Africa Regional Maize Conference, 11-15 February, 2001, pages 49-54, 2001.
 
Progress in breeding maize for Striga tolerance/resistance at IITA, Kim, S. K. and Winslow, M. D., in: Proceedings, Fifth International Symposium on Parasitic Weeds, 24-30 Jun 1991 Nairobi Kenya, edited by J. K. Ransom, L.J. Musselman, A.D. Worsham, and C. Parker, pages 494-499, The International Maize and Wheat Improvement Center (CIMMYT), 1991.
 
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.
 
Quantification of resistance to African cassava mosaic virus (ACMV) in IITA-improved mosaic-resistance cassava breeding materials, Rossel, H. W., Changa, C. M. and Atiri, G.*, in: Root 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 280-287, ISTRC-AB; CTA; International Institute of Tropical Agriculture (IITA), 1994.
 
Recent advances in breeding maize for resistance to stem borers, Ajala, S., Schulthess, F. and Cardwell, K., in: Abstracts of the Fourth Biennial West and Central Africa Regional Maize Worlshop, 14-18 May, pages 21, Cotonou, Benin Republic, 2001.
 
Recent advances in breeding maize for resistance to Striga hermonthica (Del.) Benth, Menkir, A., Kling, J., Badu-Apraku, B., The, C.* and Ibikunle, O., in: Proceedings, Nairobi, Kenya, 2002.
 
Resistance breeding in root and tuber crops at the International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria, Hahn, S. K., Isoba, J. C. G. and Ikotun, T.*, in: Crop Protection, volume 8, number 3, pages 147-168, ISSN 0261-2194, 1989.
 
Resistance genes in global crop breeding networks, Garrett, K. A., Andersen, K. F., Asche, F., Bowden, R. L., Forbes, G., Kulakow, P. and Zhou, B., in: Phytopathology, volume 107, pages 1268-1278, ISSN 0031-949X, 2017. [DOI]
 
Resistance of cowpea (Vigna unguiculata (L.) Walp.) breeding lines to blackeye cowpea mosaic and cowpea aphid borne mosaic potyvirus isolates under experimental conditions, Van Boxtel, J., Singh, B., Thottappilly, G. and Maule, A., in: Journal of Plant Disease and Protection, volume 107, pages 197-449, 2000.
 
Response to low soil nitrogen stress of S1 maize breeding lines selected for high vertical root-pulling resistance, Kamara, A., Menkir, A., Kureh, I.* and Omoigui, L., in: Maydica, volume 51, number 3-4, pages 425-433, ISSN 0025-6153, 2006.
 
Screening and breeding for resistance to African maize borers, Mareck, J. H., Bosque-Perez, N. A. and Alam, M. S., in: Annual Plant Resistance to Insects Newsletter, volume 15, pages 58-59, 1989.
 
Screening and breeding for resistance to maize stem borers and Eldana in West and Central Africa, Ajala, S., Aroga, R.*, Odiyi, A.* and Olaoye, G.*, in: African Crop Science Conference Proceedings, pages 559-564, African Crop Science Society, 2009.
 
Screening and breeding maize for resistance to Sesamia calamistis and Eldana saccharina, Bosque-Perez, N. A., Mareck, J. H., Dabrowski, Z. T., Everett, L., Kim, S. K. and Efron, Y., Centro Internacional de Mejoramiento de Maiz y Trigo, International Maize and Wheat Improvement Center, 1989.
 
Strategies for controlling the Cassava Mosaic Disease Pandemic in Eastern and Central Africa through resistance breeding programs, Ntawuruhunga, P., Legg, J., Omongo, C. S.*, Lukombo, S.* and Kimani, E., 2006.
 
Striga resistance breeding in maize, Kling, J., Fajemisin, J., Badu-Apraku, B., Diallo, A.*, Menkir, A. and Melake-Berhan, A., in: Breeding for Striga resistance in cereals: proceedings of a workshop held at IITA, Ibadan, Nigeria, 16-20 August 1999. Weikersheim, Germany, pages 103-118, Margraf Verlag, 2000.
 
The relationship between vertical root-pulling resistance and nitrogen uptake and utilization in maize breeding lines, Kamara, A., Kling, J., Ajala, S. and Menkir, A., in: Maydica, volume 47, pages 135-140, 2002.
 
Use of inbreeding as a tool to improve resistance to Striga in maize, Menkir, A., Kling, J., Badu-Apraku, B., Yallou, C.* and Ibikunle, O., in: Proceedings of the 8th International Parasitic Weeds Symposium in collaboration with the 4th International Weed Science Congress, 24-25 June 2004, Durban, South Africa, 2004.
 
Utility of Ugandan genomic selection cassava breeding populations for prediction of cassava viral disease resistance and yield in West African clones, Ozimati, A.*, Ezuma, W.*, Manze, F.*, Iragaba, P.*, Kanaabi, M.*, Ano, C. U.*, Egesi, C. and Kawuki, R. S.*, in: Frontiers in Plant Science, volume 13, number -: 1018156, pages 1-12, ISSN 1664-462X, 2022. [DOI]
 
Resistance of F1 segregating populations derived from crosses between wild banana accessions Musa acuminata spp. burmannicoides 'Calcutta 4' and M. balbisiana 'Montpellier' to black leaf streak disease, Vroh Bi, I., Zandjanakou, M, Mbah, W., Tenkouano, A., Ojiambo, P. and Bandyopadhyay, R., in: Acta Horticulturae, volume 828, pages 353-357, ISSN 0567-7572, 2009.
 
Keywords:Banana and plantain; black Sigatoka; wild species; resistance breeding

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.

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.

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.

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.

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.

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.

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.