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Yam (Dioscorea spp), a multi-species, polyploid, and vegetatively propagated tuber crop, is cultivated widely in the tropics and subtropics. Over 95% of the world's yam production occurs in West and Central Africa where white yam (Dioscorea rotundata Poir.) is the most important among cultivated ...


Otoo, E.Akromah, R.Kolesnikova-Allen, M.Asiedu, Robert[Delineation of pona complex of yam in Ghana using SSR markers]Delineation of pona complex of yam in Ghana using SSR markers

Kikuno, H.Oladimeji, Z.Ebuehi, A.Shiwachi, H.Onjo, M.Asiedu, Robert[Effect of n-propyl dihydrojasmonate (PDJ) on in vitro growth of yam (Dioscorea spp.) explants]Effect of n-propyl dihydrojasmonate (PDJ) on in vitro growth of yam (Dioscorea spp.) explants

Anthracnose, caused by Colletotrichum gloeosporioides, is the most severe foliar disease of water yam (Dioscorea alata) worldwide. The tetraploid breeding line, TDa 95/00328, is a source of dominant genetic resistance to the moderately virulent fast growing salmon (FGS) strain of C. gloeosporioid...


Mignouna, H.D.Abang, Mathew M.Onasanya, A.Agindotan, A.Asiedu, Robert[Identification and potential application of RAPD markers for anthracnose resistance in water yam (Dioscorea alata)]Identification and potential application of RAPD markers for anthracnose resistance in water yam (Dioscorea alata)

Resistance to Yam mosaic virus (YMV) in tetraploid white yam (Dioscorea rotundata) is inherited differentially as a dominant and recessive character. Elite D. rotundata breeding lines with durable resistance to YMV can be developed by pyramiding major dominant and recessive genes using marker ass...


Mignouna, H.D.Abang, Mathew M.Onasanya, A.Agindotan, B.Asiedu, Robert[Identification and potential use of RAPD markers linked to yam mosaic virus resistance in white yam (Dioscorea rotundata)]Identification and potential use of RAPD markers linked to yam mosaic virus resistance in white yam (Dioscorea rotundata)

Fifty-three cassava lines were selected from breeding populations at the International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria and screened in vitro for resistance to cassava anthracnose disease (CAD). The in vitro inoculation of stem cuttings with the fungus Colletotrichum gloe...


Fokunang, C.N.Dixon, Alfred G.O.Ikotun, T.Asiedu, RobertTembe-Fokunang, E.A.Akem, C.N.[In vitro, greenhouse, and field assessment of cassava lines for resistance to anthracnose disease caused by colletotrichum gloeosporiodes f. sp. Manihotis]In vitro, greenhouse, and field assessment of cassava lines for resistance to anthracnose disease caused by colletotrichum gloeosporiodes f. sp. Manihotis

A genetic linkage map of the tetraploid water yam (Dioscorea alata L.) genome was constructed based on 469 co-dominantly scored amplified fragment length polymorphism (AFLP) markers segregating in an intraspecific F1 cross. The F1 was obtained by crossing two improved breeding lines, TDa 95/00328...


Mignouna, H.D.Mank, R.A.Ellis, T.H.N.Bosch, N.V.D.Asiedu, RobertAbang, Mathew M.Peleman, J.[A genetic linkage map of water yam (Dioscorea alata L.) based on AFLP markers and QTL analysis for anthracnose resistance]A genetic linkage map of water yam (Dioscorea alata L.) based on AFLP markers and QTL analysis for anthracnose resistance

Breeding yams is a two-step process that combines sexual and asexual reproduction. Sexual reproduction involving a transfer of pollen from male to female genotype reproductive organ is a key step to generate variability in yam improvement. The efficacy of genetic improvement therefore depends on ...


Norman, P.E.Asfaw, A.Tongoona, P.B.Danquah, A.O.Danquah, E.Y.Koeyer, D. deAsiedu, Robert[Pollination success in some white yam genotypes under polycross and nested mating designs]Pollination success in some white yam genotypes under polycross and nested mating designs

Tamiru, M.Natsume, S.Takagi, H.White, B.Yaegashi, H.Shimizu, M.Yoshida, K.Uemura, A.Oikawa, K.Abe, A.Urasaki, N.Matsumura, HBabil, P.Yamanaka, S.Matsumoto, R.Muranaka, S.Girma, G.López Montes, A.Gedil, M.Bhattacharjee, R.Abberton, M.T.Kumar, P.L.Rabbi, Ismail Y.Tsujimura, M.Terachi, T.Haerty, W.Corpas, M.Kamoun, S.Kahl, G.Takagi, H.Asiedu, RobertTerauchi, R.[Genome sequencing of the staple food crop white Guinea yam enables the development of a molecular marker for sex determination]Genome sequencing of the staple food crop white Guinea yam enables the development of a molecular marker for sex determination

Background: Anthracnose (Colletotrichum gloeosporioides) is a major limiting factor in the production of yam (Dioscorea spp.) worldwide. Availability of high quality sequence information is necessary for designing molecular markers associated with resistance. However, very limited sequence inform...


Narina, S.S.Buyyarapu, R.Kottapalli, K.R.Sartie, A.M.Ali, M.I.Asiedu, RobertHodeba, M.Sayre, B.L.Scheffler, B.E.[Generation and analysis of expressed sequence tags (ESTs) for marker development in yam (Dioscorea alata L.)]Generation and analysis of expressed sequence tags (ESTs) for marker development in yam (Dioscorea alata L.)

The overall goal of the five year project “Yam Improvement for Income and Food Security in West Africa” (YIIFSWA) funded by the Bill and Melinda Gates Foundation and led by the International Institute of Tropical Agriculture, Ibadan, Nigeria was to: (a) increase yam productivity by 40% for 2,00,0...


Maroya, N.Asiedu, RobertMignouna, Djana B.López Montes, A.Kleih, U.K.Phillips, D.Ndiame, F.Ikeorgu, J.Otoo, E.[Yam improvement for income and food security in west Africa: effectiveness of a multidisciplinary and multiinstitutional teamwork]Yam improvement for income and food security in west Africa: effectiveness of a multidisciplinary and multiinstitutional teamwork

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