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Yams (Dioscorea species of family Dioscoreaceae) are important for food, income, and sociocultural activities especially in West and Central Africa and account for about 93% of the world’s annual production of 38 million tonnes. Breeding of yams is focused primarily on the two dominant species, D...


Asiedu, RobertMignouna, H.Odu, B.Hughes, J.[Yam breeding]Yam breeding
Kanno, H.Dixon, A.Asiedu, RobertHahn, S.K.[Breeding for host plant resistance of cassava green spider mite (CGM) (Mononychellus tanajoa, Bondar) at IITA]Breeding for host plant resistance of cassava green spider mite (CGM) (Mononychellus tanajoa, Bondar) at IITA

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

This study was carried out in order to compare pasting behavior and functional characteristics of flours and starches from ten varieties of water yam (D. alata). Differences were established among the arieties in the functional and physical properties of the starches and flours, incl...

Cette étude a été effectuée afin de comparer le comportement de coller et les caractéristiques fonctionnelles des farines et des amidons de dix variétés d’igname (D. alata). Des différences ont été établies parmi les variétés examinées dans les propriétés fonctionnelles et physiques de leurs amid...


Oke, M.O.Awonorin, S.O.Asiedu, RobertMaziya-Dixon, B.B.Sanni, L.O.Akinwande, B.A.[Variation in pasting and functional properties of flours and starches from water yam (Dioscorea alata)]Variation in pasting and functional properties of flours and starches from water yam (Dioscorea alata)
Dixon, A.Asiedu, RobertNg, N.Q.[Introgression of African landraces and arborescent cassava in genetic improvement of cassava in SSA: problems, progress and prospects]Introgression of African landraces and arborescent cassava in genetic improvement of cassava in SSA: problems, progress and prospects
Dixon, A.Asiedu, RobertHahn, S.[Cassava germplasm enhancement at the International Institute of Tropical Agriculture (IITA)]Cassava germplasm enhancement at the International Institute of Tropical Agriculture (IITA)

Cassava (Manihot spp.) improvement strategies at the International Institute of Tropical Agriculture (IITA) are discussed here in relation to the main constraints, target ecologies and utilization of exotic germplasm. Germplasm generated from IITA populations and from other African or non-African...


Dixon, Alfred G.O.Asiedu, RobertHahn, S.K.[Cassava germplasm enhancement at the International Institute of Tropical Agriculture (IITA)]Cassava germplasm enhancement at the International Institute of Tropical Agriculture (IITA)
Park, B.Kikuno, H.Asiedu, RobertPark, C.H.[Studies on the antioxidant and whitening properties of extracts from tuber of yams (Dioscorea spp.)]Studies on the antioxidant and whitening properties of extracts from tuber of yams (Dioscorea spp.)

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