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Journal Article 2008-04

Autor: Adeniyi, O.J. Adetimirin, V.O. Ingelbrecht, I.L. Asiedu, Robert

In vitro culture media capable of regenerating moderate to high shoots and/or plantlets from meristems of two yam species – Dioscorea rotundata and Dioscorea alata within comparable duration of 10 weeks as commonly obtained in other monocots and root and tuber crops were investigated. The study c...

Enlace original: https://cgspace.cgiar.org/handle/10568/90907

Investigación en Agricultura
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Adeniyi, O.J. ,  Adetimirin, V.O. ,  Ingelbrecht, I.L. ,  Asiedu, Robert ,  [Shoot and plantlet regeneration from meristems of Dioscorea rotundata poir and Dioscorea alata L.] ,  Shoot and plantlet regeneration from meristems of Dioscorea rotundata poir and Dioscorea alata L.
Journal Article 2009

Autor: Obidiegwu, J.E. Rodríguez, E. Ene-Obong, E.E. Loureiro, J. Muoneke, C. Santos, C. Kolesnikova-Allen, M. Asiedu, Robert

Dioscorea alata L. is a highly important crop, widely distributed in the humid and semi-humid tropics. Flow cytometry was used to determine the ploidy levels of 74 D. alata genotypes collected mainly from West African countries. Sixty three of the genotypes were found to be tetraploid, one was he...

Enlace original: https://cgspace.cgiar.org/handle/10568/90196

Investigación en Agricultura
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Obidiegwu, J.E. ,  Rodríguez, E. ,  Ene-Obong, E.E. ,  Loureiro, J. ,  Muoneke, C. ,  Santos, C. ,  Kolesnikova-Allen, M. ,  Asiedu, Robert ,  [Ploidy levels of Dioscorea alata L. germplasm determined by flow cytometry] ,  Ploidy levels of Dioscorea alata L. germplasm determined by flow cytometry
Journal Article 2008

Autor: Otoo, E. Anchirinah, V.M. Ennin, S.A. Asiedu, Robert

A trial was conducted on-station with farmer participation at Fumesua (Forest zone), Wenchi (Forest-Savannah transition zone) and Bodwease (Coastal Savannah zone) from 2000 to 2003 and on-farm during 2002-2003. Two factors, staking and species, with two levels each were assessed using the Augment...

Enlace original: https://cgspace.cgiar.org/handle/10568/90919

Investigación en Agricultura
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Otoo, E. ,  Anchirinah, V.M. ,  Ennin, S.A. ,  Asiedu, Robert ,  [Sustainable yam production in Ghana The nonstaking option] ,  Sustainable yam production in Ghana The nonstaking option
Journal Article 2008

Autor: Asadu, C.L.A. Egbobe, O.B. Asiedu, Robert

A major constraint facing yam producers in southeastern Nigeria is poor storage of the tubers. Farmers in the area also opine that yams grown with mineral fertilizers tend to have shorter shelf life than those grown without mineral fertilizers. This study was undertaken to evaluate the effect of ...

Enlace original: https://cgspace.cgiar.org/handle/10568/90913

Investigación en Agricultura
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Asadu, C.L.A. ,  Egbobe, O.B. ,  Asiedu, Robert ,  [Storage life of eleven cultivars of white yam (Dioscorea rotundata) grown with or without NPK fertilizer and the relationship with residual soil NPK] ,  Storage life of eleven cultivars of white yam (Dioscorea rotundata) grown with or without NPK fertilizer and the relationship with residual soil NPK
Journal Article 2009

Autor: Hamadina, E.I. Craufurd, Peter Q. Asiedu, Robert

White or Guinea yam (Dioscorea rotundata), grown for its underground tubers, is an important food in West Africa. Progress in yam breeding is constrained by variable flowering behaviour, making hybridization difficult. Yam clones may be dioecious, monoecious or hermaphrodite with variable sex rat...

Enlace original: https://cgspace.cgiar.org/handle/10568/90167

Investigación en Agricultura
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Hamadina, E.I. ,  Craufurd, Peter Q. ,  Asiedu, Robert ,  [Flowering intensity in white yam (Dioscorea rotundata)] ,  Flowering intensity in white yam (Dioscorea rotundata)
Journal Article 1993

Autor: Porto, M. Asiedu, Robert

Cassava is the major root crop in eastern and southern Africa. It is an important source of calories for the inhabitants of such countries as Uganda, Malawi, and Mozambique. It may also be the best alternative for overcoming the food scarcities caused by frequent droughts in the region.

Enlace original: https://cgspace.cgiar.org/handle/10568/97350

Investigación en Agricultura
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Porto, M. ,  Asiedu, Robert ,  [Cassava research and development in eastern and southern Africa] ,  Cassava research and development in eastern and southern Africa
Journal Article 2008

Autor: Aduramigba-Modupe, A.O. Asiedu, Robert Odebode, A.C.

Anthracnose disease, caused by the pathogen Collectotrichum gloeosporioides Penz., is a serious challenge to the cultivation of Dioscorea alata, a major source of food and income for millions of farm households in the tropics. Five breeder’s lines and eighteen landraces of D. alata from IITA’s ge...

Enlace original: https://cgspace.cgiar.org/handle/10568/92238

Investigación en Agricultura
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Aduramigba-Modupe, A.O. ,  Asiedu, Robert ,  Odebode, A.C. ,  [Reaction of Dioscorea alata (water yam) to anthracnose disease in Nigeria] ,  Reaction of Dioscorea alata (water yam) to anthracnose disease in Nigeria
Journal Article 1994

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

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/10568/97369

Investigación en Agricultura
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Otoo, J. ,  Dixon, A. ,  Asiedu, Robert ,  Okeke, J. ,  Maroya, N. ,  Tougnon, K. ,  Okoli, O. ,  Tetteh, J. ,  Hahn, S. ,  [Genotype x environment interaction studies with cassava] ,  Genotype x environment interaction studies with cassava
Journal Article 1994

Autor: Hahn, S. Bai, K. Chukwuma, E. Asiedu, Robert Dixon, A. Ng, S.

Spontaneous sexual and asexual polyploids occur in cassava. The cassava polyploid breeding strategies using these polyploidization processes are discussed. Sexual polyploidization has advantages over asexual polyploidization in terms of viability of gametes, heterosis, vigor, plant architecture, ...

Enlace original: https://cgspace.cgiar.org/handle/10568/97367

Investigación en Agricultura
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Hahn, S. ,  Bai, K. ,  Chukwuma, E. ,  Asiedu, Robert ,  Dixon, A. ,  Ng, S. ,  [Polyploid breeding of cassava] ,  Polyploid breeding of cassava
Journal Article 2008

Autor: Eni, A.O. Kumar, L. Asiedu, Robert Alabi, O.J. Naidu, R.A. Hughes, J.A. Rey, M.E.

Yam (Dioscorea spp., family Dioscoreaceae) is one of the most important food crops cultivated in the West African yam zone comprising the forest and savannah areas of Nigeria, Ghana, Côte d'Ivoire, Republic of Benin, and Togo, which account for more than 90% of the 4.59 million ha of yam cultivat...

Enlace original: https://cgspace.cgiar.org/handle/10568/90811

Investigación en Agricultura
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Eni, A.O. ,  Kumar, L. ,  Asiedu, Robert ,  Alabi, O.J. ,  Naidu, R.A. ,  Hughes, J.A. ,  Rey, M.E. ,  [First report of cucumber mosaic virus in yams (Dioscorea spp.) in Ghana, Togo and Republic of Benin in West Africa] ,  First report of cucumber mosaic virus in yams (Dioscorea spp.) in Ghana, Togo and Republic of Benin in West Africa

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