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Journal Article 2000

Autor: Dansi, A. Mignouna, H. Zoundjihékpon, J. Sangare, A. Asiedu, Robert Ahoussou, N.

Four hundred and sixty-seven accessions of cultivated Guinea yam (Dioscorea cayenensis/Dioscorea rotundatacomplex) collected from different localities of Benin Republic were analysed to study isoenzymatic variability in seven enzyme systems: aspartate aminotransferase (AAT), esterase (EST), gluco...

Enlace original: https://cgspace.cgiar.org/handle/10568/92616

Investigación en Agricultura
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Dansi, A. ,  Mignouna, H. ,  Zoundjihékpon, J. ,  Sangare, A. ,  Asiedu, Robert ,  Ahoussou, N. ,  [Using isozyme polymorphism to assess genetic variation within cultivated yams (Dioscorea cayenensis/Dioscorea rotundata complex) of the Republic of Benin] ,  Using isozyme polymorphism to assess genetic variation within cultivated yams (Dioscorea cayenensis/Dioscorea rotundata complex) of the Republic of Benin
Journal Article 2002

Autor: Mignouna, H. Mank, R. Ellis, T. Bosch, N. van den Asiedu, Robert Ng, S. Peleman, J.

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...

Enlace original: https://cgspace.cgiar.org/handle/10568/92765

Investigación en Agricultura
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Mignouna, H. ,  Mank, R. ,  Ellis, T. ,  Bosch, N. van den ,  Asiedu, Robert ,  Ng, S. ,  Peleman, J. ,  [A genetic linkage map of guinea yam (Dioscorea rotundata Poir.) based on AFLP markers] ,  A genetic linkage map of guinea yam (Dioscorea rotundata Poir.) based on AFLP markers
Journal Article 2001

Autor: Mignouna, H. Njukeng, P. Abang, Mathew M. Asiedu, Robert

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...

Enlace original: https://cgspace.cgiar.org/handle/10568/92713

Investigación en Agricultura
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Mignouna, H. ,  Njukeng, P. ,  Abang, Mathew M. ,  Asiedu, Robert ,  [Inheritance of resistance to yam mosaic virus, genus Potyvirus, in white yam (Dioscorea rotundata)] ,  Inheritance of resistance to yam mosaic virus, genus Potyvirus, in white yam (Dioscorea rotundata)
Journal Article 2002

Autor: Asiedu, Robert Akoroda, M.O. Aighewi, B.A.

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...

Enlace original: https://cgspace.cgiar.org/handle/10568/92729

Investigación en Agricultura
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Asiedu, Robert ,  Akoroda, M.O. ,  Aighewi, B.A. ,  [Seed yam (Dioscorea rotundata Poir) production, storage, and quality in selected yam zones of Nigeria] ,  Seed yam (Dioscorea rotundata Poir) production, storage, and quality in selected yam zones of Nigeria
Conference Proceedings 2012-02

Autor: Sartie, A.M. Asiedu, Robert

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 ...

Enlace original: https://cgspace.cgiar.org/handle/10568/81303

Investigación en Agricultura
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Sartie, A.M. ,  Asiedu, Robert ,  [Development of mapping populations for genetic analysis in yams (D. rotundata and D. alata)] ,  Development of mapping populations for genetic analysis in yams (D. rotundata and D. alata)
Journal Article 2002

Autor: Aighewi, B.A. Asiedu, Robert Akoroda, M.O.

Tuber of most varieties of white Guinea yam, Dioscorea rotundata Poir., produce a single sprout in the proximal region after the break dormancy. The location and pattern of sprout formation on intact tubers of a multiple sprouting variety, Pepa were studied. Only 0.4% of the tubers had a single s...

Enlace original: https://cgspace.cgiar.org/handle/10568/92730

Investigación en Agricultura
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Aighewi, B.A. ,  Asiedu, Robert ,  Akoroda, M.O. ,  [Patterns and locations of sprouts on intact tubers of a multiple sprouting Dioscorea rotundata poir. variety, Pepa] ,  Patterns and locations of sprouts on intact tubers of a multiple sprouting Dioscorea rotundata poir. variety, Pepa
Journal Article 2002

Autor: Shiwachi, H. Ayankanmi, T.G. Asiedu, Robert

Sixty-day-old plants of white Guinea yam (Dioscorea rotundata), water yam (D. alata) and yellow Guinea yam (D. cayenensis) were exposed to 10 h day lengths (short days) for 15 and 30 days. Short-day treatment applied at the early growth stage of yams promoted the enlargment of tubers, but the res...

Enlace original: https://cgspace.cgiar.org/handle/10568/103630

Investigación en Agricultura
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Shiwachi, H. ,  Ayankanmi, T.G. ,  Asiedu, Robert ,  [Effect of day length on the development of tubers in yams (Dioscorea spp.)] ,  Effect of day length on the development of tubers in yams (Dioscorea spp.)
Journal Article 2016-06-22

Autor: Saini, H. Kashihara, Y. López Montes, A. Asiedu, Robert

In the present study, in vitro ovule culture technique was used to obtain interspecific cross combination of Dioscorea rotundata ufenyi and Dioscorea bulbifera wild. Ten days after pollination, ovules were excised and cultured onto 1/2 strength Murashige and Skoog (MS) medium (Basal salt mixture ...

Enlace original: https://cgspace.cgiar.org/handle/10568/76358

Investigación en Agricultura
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Saini, H. ,  Kashihara, Y. ,  López Montes, A. ,  Asiedu, Robert ,  [Interspecific crossing between yam species (Dioscorea rotundata and Dioscorea bulbifera) through in vitro ovule culture] ,  Interspecific crossing between yam species (Dioscorea rotundata and Dioscorea bulbifera) through in vitro ovule culture
Journal Article 2004-04

Autor: Odu, B.O. Hughes, J.D.A. Asiedu, Robert Ng, N.Q. Shoyinka, S.A. Oladiran, O.A.

The responses of 24 white yam (Dioscorea rotundata) cultivars to mechanical and vector transmission with each of three viruses infecting yams were assessed through enzyme-linked immunosorbent assay (ELISA) and symptom development. The viruses were Dioscorea alata virus (DAV), genus Potyvirus; Dio...

Enlace original: https://cgspace.cgiar.org/handle/10568/96405

Investigación en Agricultura
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Odu, B.O. ,  Hughes, J.D.A. ,  Asiedu, Robert ,  Ng, N.Q. ,  Shoyinka, S.A. ,  Oladiran, O.A. ,  [Responses of white yam (Dioscorea rotundata) cultivars to inoculation with three viruses] ,  Responses of white yam (Dioscorea rotundata) cultivars to inoculation with three viruses
Journal Article 1996

Autor: Osai, E.O. Ikotun, T. Asiedu, Robert Hahn, S.K.

The response of yam (Dioscorea) cultivars to artificial and natural infections with minisett rot pathogens was investigated. None of the 20 yam cultivars were resistant to Sclerotium rolfsii [Corticium rolfsii] or Trichoderma longibrachyatum. Cultivars TDa 84/093, 85/236, 85/257, TDr 608, 745, 81...

Enlace original: https://cgspace.cgiar.org/handle/10568/101009

Investigación en Agricultura
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Osai, E.O. ,  Ikotun, T. ,  Asiedu, Robert ,  Hahn, S.K. ,  [Susceptibility of yam cultivars to minisett rot pathogens] ,  Susceptibility of yam cultivars to minisett rot pathogens

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