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IITA's research in breeding cassava and sweet potato for resistance to pests and diseases of major economic importance in Africa is discussed under the headings: breeding cassava for resistance to pests (cassava green spider mite (Mononychellus progresivus and M. tanajoa) and cassava mealybug (Ph...


Hahn, S.K.Caveness, F.E.Lema, K.M.Theberge, R.L.[Breeding cassava and sweet potato for pest and disease resistance in Africa]Breeding cassava and sweet potato for pest and disease resistance in Africa

Sweetpotato, the seventh most important food crop worldwide, is valued for combating hunger, malnutrition, and poverty because of its hardy nature, wide adaptability, and tolerance to abiotic stresses. Cultivated sweetpotato is hexaploid (2n = 6x = 90) and due to the complexity of its genome, it ...


Khan, A.David, M.Simon, R.Díaz, F.Eyzaguirre, R.Wolfgang, G.[23. International Plant & Animal Genome Conference. San Diego, California (USA). 10-14 Jan 2015.][GBS for Ipomoea trifida: A next generation marker system for sweetpotatoes]GBS for Ipomoea trifida: A next generation marker system for sweetpotatoes

The breeding objectives in the Root and Tuber Improvement Programme of the International Institute of Tropical Agriculture (IITA) were laid down. Basic considerations in cassava breeding were reviewed and discussed. The paper attempts to produce a cassava breeding system applicable on a world-wid...

Expose des objectifs du Programme de Selection et d'Amelioration des Plantes a Racine et a Tubercule a I'lnstitut International d'Agriculture Tropicale (IITA). Examen critique des problemes fondamentaux de la selection et de I'amelioration du manioc et tentative de formulation d'un systeme de sel...

Se establecieron los objetivos de hibridacion del Programa de Mejoramiemo de Raices y Tuberculos del Instituto de Agricultura Tropical (IITA). Se discutieron las consideraciones basicas del mejoramiento genthico en yuca. EI reporte intenta producir un sistema de hibridacion que sea aplicable sobr...


Hahn, S.K.Howland, A.K.Terry, Eugene R.[Cassava breeding at IITA: Conference Proceedings of the Third Symposium of the International Society for Tropical Root Crops held at IITA, Ibadan, Nigeria, 29 December, 1973]Cassava breeding at IITA: Conference Proceedings of the Third Symposium of the International Society for Tropical Root Crops held at IITA, Ibadan, Nigeria, 29 December, 1973

The constraint to the production of the root and tuber crops, cassava, yams and sweet potato in Nigeria and Africa were stated. Breeding methods most appropriate to these crops were discussed in terms of mating systems, creation of source populations, selection, and use of selections. Intervariet...


Hahn, S.K.Howland, A.K.Wilson, J.E.[Breeding of root and tuber crops]Breeding of root and tuber crops

Commonly used innovation adoption models indirectly assume homogenous information flow across farmers, which is often not the case. For new and or not well known technologies such as Orange-fleshed sweetpotato (OFSP) varieties, awareness exposure plays an important role in farmers’ decision to ad...


Adekambi, S.Abidin, P.E.Okello, J.J.Carey, E.E.[Awareness exposure and technology adoption: the case of orange-fleshed sweetpotato in West Africa.]Awareness exposure and technology adoption: the case of orange-fleshed sweetpotato in West Africa.

Biofortification of crops as part of the effort to combat micronutrient deficiencies especially in developing countries gaining global recognition. Recent award of world food price to biofortification of staple crops has further energized efforts to promote the cultivation and consumption of biof...


Okello, J.J.Muoki, P.Kwikiriza, N.Wambaya, J.Heck, S.[Effect of agriculture-nutrition education and extension services on early adoption and diffusion of biofortfied crops: The case of orange-fleshed sweetpotato in Kenya]Effect of agriculture-nutrition education and extension services on early adoption and diffusion of biofortfied crops: The case of orange-fleshed sweetpotato in Kenya

A major objective of breeding at the Sweetpotato Support Platform for West Africa in Ghana, is the development of non-sweet cultivars suitable for use as staple foods, or in fried and other processed products. This priority was set during stakeholder consultations when establishing the program, a...


Carey, E.E.Swanckaert, J.Dery, E.K.Akansake, D.Saaka, J.Abidin, P.E.Adofo, K.Baafi, E.Muzhingi, T.David, M.Low, J.W.Gruneberg, W.J.[Developing and deploying non- and low-sweet sweetpotato cultivars for expanding markets.]Developing and deploying non- and low-sweet sweetpotato cultivars for expanding markets.

Sweetpotato is grown during the rainyand during the dry season in Mozambique (the rainy season is very unstable). In total 58 clones were evaluated across three years during the dry season and with two treatments (with and without irrigation during the initial growing stages). Three check clones ...


Andrade, M.I.Ricardo, J.Gruneberg, W.J.[Genotype x environment interactions for a diverse set of sweetpotato clones evaluation across drought prone environment of Mozambique.]Genotype x environment interactions for a diverse set of sweetpotato clones evaluation across drought prone environment of Mozambique.

Mwanga, R.O.M.Tumwegamire, SilverGruneberg, W.J.Agili, S.Ssemakula, G.N.[Breeding orange-fleshed sweetpotato varieties for East Africa.]Breeding orange-fleshed sweetpotato varieties for East Africa.

Claessens, LievenStoorvogel, J.J.Antle, John M.Thornton, Philip K.Herrero, Mario T.[Sweet potato for adapting to climate change in the mixed croplivestock systems of East Africa.]Sweet potato for adapting to climate change in the mixed croplivestock systems of East Africa.

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