A genetic linkage map of the tetraploid white yam (Dioscorea rotundata Poir.) was constructed based on 341 co-dominantly scored amplified fragment length polymorphism (AFLP) markers segregating in an intraspecific F1 cross. The F1 mapping population was produced by crossing a landrace cultivar TD...
Mignouna, H.
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Mank, R.
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Ellis, T.
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Bosch, N. van den
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Asiedu, Robert
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Ng, S.
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Peleman, J.
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[A genetic linkage map of guinea yam (Dioscorea rotundata Poir.) based on AFLP markers]
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A genetic linkage map of guinea yam (Dioscorea rotundata Poir.) based on AFLP markers
The tubers of yam, principally those of Dioscorea rotundata (white Guinea yam) and D. alata (water or greater yam), are important staple foods and sources of carbohydrate in West Africa. Yams are grown in diverse environments – from the high-rainfall forest zone on the coast to the seasonally ari...
Yam mosaic virus (YMV) causes the most-widespread and economically important viral disease affecting white yam (Dioscorea rotundata) in West Africa. The genetic basis of resistance in white yam to a Nigerian isolate of YMV was investigated in three tetraploid D. rotundata genotypes: TDr 93–1, TDr...
Mignouna, H.
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Njukeng, P.
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Abang, Mathew M.
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Asiedu, Robert
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[Inheritance of resistance to yam mosaic virus, genus Potyvirus, in white yam (Dioscorea rotundata)]
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Inheritance of resistance to yam mosaic virus, genus Potyvirus, in white yam (Dioscorea rotundata)
Sangoyomi, T.
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Ekpo, E.
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Asiedu, Robert
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[First report of Nattrassia mangiferae as a postharvest fungal pathogen of white yam (Dioscorea rotundata) in Nigeria]
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First report of Nattrassia mangiferae as a postharvest fungal pathogen of white yam (Dioscorea rotundata) in Nigeria
The unavailability of good quality seed yams (Dioscorea rotundata Poir) is frequently cited to be responsible for the slow rate of growth or decline in yam production. Current production and storage practices, as well as quality of seed yams in 35 villages of Oyo North, Asaba, Lokoja, and Lafia a...
Asiedu, Robert
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Akoroda, M.O.
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Aighewi, B.A.
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[Seed yam (Dioscorea rotundata Poir) production, storage, and quality in selected yam zones of Nigeria]
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Seed yam (Dioscorea rotundata Poir) production, storage, and quality in selected yam zones of Nigeria
Progress is being made at the International Institute of Tropical Agriculture to develop molecular tools for marker-assisted selection that would complement and expedite conventional breeding approaches for genetic improvement of yams (Dioscorea spp.). F mapping populations 1 were developed from ...
Sartie, A.M.
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Asiedu, Robert
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[Development of mapping populations for genetic analysis in yams (D. rotundata and D. alata)]
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Development of mapping populations for genetic analysis in yams (D. rotundata and D. alata)
Seed yams are an essential input into the Dioscorea yam economy of West Africa. Till date, the agronomic separation of seed yam production from that of ware tuber production for food has not been fully achieved. ‘Milking’ of food tubers to get seed yam continues as a dominant channel of seed yam ...
Akoroda, M.O.
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Cladius-Cole, B.
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Kikuno, H.
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Okonkwo, C.C.
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Aighewi, B.A.
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Acha, A.I.
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Asiedu, Robert
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[Enhancing seed yam supply systems in West Africa]
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Enhancing seed yam supply systems in West Africa
The performance of 5 promising pre-release hybrid water yam (D. alata) varieties (TDa 98/01166; TDa 98/01176; TDa 98/01168; TDa 99/91169; and TDa 99/00240) evaluated for high and stable yields, pest and disease resistance and desirable food qualities, was determined in 2004 and 2005 in 6 location...
Ikeorgu, J.G.
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Egesi, Chiedozie N.
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Asiedu, Robert
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[Evaluation of the performance of five hybrid water yam clones in the yam belt of Nigeria]
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Evaluation of the performance of five hybrid water yam clones in the yam belt of Nigeria