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Journal Article 2009

Autor: Egesi, Chiedozie N. Onyeka, T.J. Asiedu, Robert

Yam anthracnose and virus diseases are the most important biotic constraints affecting yam production in the world. Six Dioscorea alata genotypes were evaluated for their reaction to these diseases in four distinct agro-ecological zones in Nigeria for two years. Data obtained were subjected to li...

Enlace original: https://cgspace.cgiar.org/handle/10568/90215

Investigación en Agricultura
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Egesi, Chiedozie N. ,  Onyeka, T.J. ,  Asiedu, Robert ,  [Environmental stability of resistance to anthracnose and virus diseases of water yam (Dioscorea alata)] ,  Environmental stability of resistance to anthracnose and virus diseases of water yam (Dioscorea alata)
Journal Article 2009-01

Autor: Otoo, E. Asiedu, Robert

Twenty-two genotypes of D. rotundata cultivar Dorban consisting of 19 botanically developed seeds and 3 vegetative checks were evaluated in 15 environments from 2000 to 2004 using CRD to assess the effect of genotype and genotype x environment interaction on the tuber yield of 22 white yam (D. ro...

Enlace original: https://cgspace.cgiar.org/handle/10568/90214

Investigación en Agricultura
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Otoo, E. ,  Asiedu, Robert ,  [The performance profile of Dioscorea rotundata cultivar Dorban genotypes in Ghana using GGE biplot analysis] ,  The performance profile of Dioscorea rotundata cultivar Dorban genotypes in Ghana using GGE biplot analysis
Conference Paper 1994

Autor: Nweke, F. Dixon, A. Asiedu, Robert Folayan, S.A.

Manihot esculenta.This paper which is based on information collected as part of Collaborative Study of Cassava in Africa (COSCA) provides information on cassava genotypes cultivated in sub-Saharan Africa. It shows that there is a high degree of turnover in the cassava genotypes cultivated. Farmer...

Enlace original: https://cgspace.cgiar.org/handle/10568/100969

Investigación en Agricultura
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Nweke, F. ,  Dixon, A. ,  Asiedu, Robert ,  Folayan, S.A. ,  [Attributes of cassava varieties desired by farmers in subSaharan Africa] ,  Attributes of cassava varieties desired by farmers in subSaharan Africa
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
Conference Paper 1994

Autor: Asiedu, Robert Hahn, S.K. Bai, K.V. Dixon, A.

Most cassava (Manihot esculenta Crantz) improvement programs depend on the range of variability available within the cultigen for breeding varieties adapted to target environments. Efforts by some programs to introduce additional variability from wild Manihot species into cassava have led to impr...

Enlace original: https://cgspace.cgiar.org/handle/10568/101038

Investigación en Agricultura
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Asiedu, Robert ,  Hahn, S.K. ,  Bai, K.V. ,  Dixon, A. ,  [Interspecific hybridization in the genus Manihot progress and prospects] ,  Interspecific hybridization in the genus Manihot progress and prospects
Conference Paper 1994

Autor: Dixon, A. Asiedu, Robert Hahn, S.K.

Stable as well as adaptable genotypes of high-yielding cassava cultivars, should be developed and made available to farmers, to ensure increases in cassava production in a target region or country in sub-Saharan Africa. As farmer-to-farmer contact is the primary means of diffusion of new crop var...

Enlace original: https://cgspace.cgiar.org/handle/10568/101005

Investigación en Agricultura
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Dixon, A. ,  Asiedu, Robert ,  Hahn, S.K. ,  [Genotypic stability and adaptability: analytical methods and implications for cassava breeding for low input agriculture] ,  Genotypic stability and adaptability: analytical methods and implications for cassava breeding for low input agriculture
Conference Paper 1994

Autor: Thro, Ann Marie Roca, W. Asiedu, Robert

In modern biological research, cassava has been an orphan crop, because most advances have taken place in developed countries where cassava is not grown. In order for cassava to profit from biotechnology, efforts around the world must be pooled, integrating developing countries into the process. ...

Enlace original: https://cgspace.cgiar.org/handle/10568/101049

Investigación en Agricultura
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Thro, Ann Marie ,  Roca, W. ,  Asiedu, Robert ,  [The cassava biotechnology network and African agriculture research and development programmes] ,  The cassava biotechnology network and African agriculture research and development programmes
Conference Paper 1994

Autor: Otoo, J. Dixon, A. Asiedu, Robert Okeke, J.E. Maroya, N. Tougnon, K. Okoli, O. Tetteh, J.P. Hahn, S.K.

Multilocational trials were conducted in several agroecological zones in West Africa to assess the magnitude of genotype x environment (G x E) interaction and to identify stable varieties which could be used in breeding programs in the region. The reaction of the varieties to major cassava diseas...

Enlace original: https://cgspace.cgiar.org/handle/10568/101027

Investigación en Agricultura
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Otoo, J. ,  Dixon, A. ,  Asiedu, Robert ,  Okeke, J.E. ,  Maroya, N. ,  Tougnon, K. ,  Okoli, O. ,  Tetteh, J.P. ,  Hahn, S.K. ,  [Genotype environment interaction studies with cassava] ,  Genotype environment interaction studies with cassava
Book Chapter 1992

Autor: Hahn, S.K. Bai, K.V. Asiedu, Robert Dixon, Alfred G.O. Tavoletti, S. Mariani, A., Veronesi, F. Tuyl, J.M. van Creji, M.G.M. van Dien, M.P. van Kerckhoffs, D.M.F.Y Laublin, G. Brault, M. Cappadocia, M. Makoveychuk, A.

Plant reproduction is a core process in plant breeding. For decades, one can even say for centuries, plant reproductive biology has largely been a matter of observation, description, and philosophical speculation. Only in the last two decades has it entered the experimental phase, and it is in th...

Enlace original: https://cgspace.cgiar.org/handle/10568/101707

Investigación en Agricultura
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Hahn, S.K. ,  Bai, K.V. ,  Asiedu, Robert ,  Dixon, Alfred G.O. ,  Tavoletti, S. ,  Mariani, A., Veronesi, F. ,  Tuyl, J.M. van ,  Creji, M.G.M. van ,  Dien, M.P. van ,  Kerckhoffs, D.M.F.Y ,  Laublin, G. ,  Brault, M. ,  Cappadocia, M. ,  Makoveychuk, A. ,  [Biotechnology in reproductive biology] ,  Biotechnology in reproductive biology

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