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A substantial impact on Africa agriculture can be made through research on crop improvement for the extensive inland valley agro-ecosystems (IVS) extending from the humid forest to the savanna zones in sub saharan Africa. Systematic surveys of farmers have shown that cassava is a favoured upland ...


Ekanayake, I.J.Dixon, A.Asiedu, RobertIzac, A.M.[Improved cassava for inland valley agroecosystems]Improved cassava for inland valley agroecosystems

Four hybrid water yam (Dioscorea alata) genotypes (TDa 00/00194, TDa 00/00103, TDa 00/00104, TDa 00/00363) with two superior landraces (TDa 92-2 and UM 680) were evaluated for high and stable yields, pest and disease resistance, and acceptable food and market qualities in 2006 using ...

Quatre hybrides génotypes d’igname, l’eau yam (Dioscorea alata) (TDa 00/00194, TDa 00/00103, TDa 00/00104, TDa 00/00363 avec deux variétés supérieurs de races- une variété qui tolère l’effort biotique et abiotique ayant pour le résultat la stabilité élevée de rendement (TDa 92-2 et U...


Ikeorgu, J.G.Oselebe, H.Oluwatayo, J.Ugwuoke, K.Ukpabi, U.J.Asiedu, Robert[Farmer participatory evaluation of four hybrid water yam clones in the yam belt of Nigeria]Farmer participatory evaluation of four hybrid water yam clones in the yam belt of Nigeria

Les donnees recueillies en 1990 et 1991 sur 200 petits elevages de chevres suivis dans le cadre du Projet caprin de Ngozi ont mis en evidence un pic de mortalite entre mars et juillet chez des chevreaux ages de moins de 6 mois. Afin de simuler la survie de cohortes de chevreaux independamment des...


Ba, Malick N.Rey, B.Shibre, M.[Mortalite des chevreaux croises Alpine au Burundi]Mortalite des chevreaux croises Alpine au Burundi

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 moist savannas of West and Central Africa have great potential for maize grain production due to high levels of radiation and reduced incidence of pests and diseases. However, soils in this zone are generally low in organic matter and cation exchange capacity in addition to land use intensifi...


Ajala, S.O.Menkir, A.Kamara, A.Y.Alabi, S.O.Abdulai, M.S.[Breeding strategies to improve maize for adaptation to low soil nitrogen in West and Central Africa]Breeding strategies to improve maize for adaptation to low soil nitrogen in West and Central Africa

Soybean is a relatively new crop to most African smallholder farming communities. Cultivation is expanding rapidly because of its perceived potential to enhance soil fertility through biological nitrogen fixation and its source as food and cash. High N2, fixation in promiscuous soybean genotypes ...

Le soia qui est relativement une nou,relle spdculation pour la plupartdes communautes des petits expioitants d'Afrique, se d6velopperapidernent il cause de son potentiel connu d'augmentation de lafertilit€ des sols par la fixation biologique d'azote, dans l'alimentationet comme culture de rente. ...


Abaidoo, R.C.Sanginga, NteranyaOkogun, J.A.Kolawole, G.O.Tossah, B.K.Diels, J.[Genotypic variation of soybean for phosphorus use efficiency and their contribution of N and P to subsequent maize crops in three ecological zones of West Africa]Genotypic variation of soybean for phosphorus use efficiency and their contribution of N and P to subsequent maize crops in three ecological zones of West Africa

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

Assessment of new yam varieties in Côte d'Ivoire : results of three experiments years with improved genotypes by IITA The most important food crop in the Ivory Coast, yam, is cultivated in a traditional system with low productivity. In order to suffice the needs of the growing population the intr...


Ettien, J.B.Tschannen, A.B.[Evaluation de nouvelles varieties digname en Cote dIvoire: bilan de trois annees dexperience avec des genotypes ameliores par lIITA]Evaluation de nouvelles varieties digname en Cote dIvoire: bilan de trois annees dexperience avec des genotypes ameliores par lIITA

Multilocation evaluation trials (MET) constitute an important step in the evaluation of breeding lines, in order to assess their adaptation and stability patterns across environments, and to ensure optimal targeting of the lines. Seven Musa genotypes comprising five plantain hybrids, one cooking ...


Tenkouano, A.Baiyeri, K.P.[Adaptation pattern and yield stability of banana and plantain genotypes grown in contrasting agro-ecologies in Nigeria]Adaptation pattern and yield stability of banana and plantain genotypes grown in contrasting agro-ecologies in Nigeria

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