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Journal Article 2002

Analysis of yam yields using the additive main effects and multiplicative interaction (AMMI) model

Autor: Egesi, Chiedozie N. Asiedu, Robert

The AMMI model combines regular analysis of variance for additive main effects with principal component analysis for multiplicative structure within the interaction. It also improves the accuracy of crop yield estimates and selects genotypes with highest yields. Despite knowledge of the model, po...

Le modèle AMMI combine l’analyse régulière de la variance pour les principaux effets additifs avec une analyse des composantes principales avec une structure d’intéraction multiplicative. Il améliore aussi l’estimation des rendements et la sélection des génotypes à haut rendement. En dépit de la ...

Enlace original: https://cgspace.cgiar.org/handle/10568/92753

Investigación en Agricultura

DIOSCOREA ALATA

G X E

MULTILOCATIONAL TRIALS

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Egesi, Chiedozie N. , Asiedu, Robert , [Analysis of yam yields using the additive main effects and multiplicative interaction (AMMI) model] , Analysis of yam yields using the additive main effects and multiplicative interaction (AMMI) model

Journal Article 1996

Susceptibility of yam cultivars to minisett rot pathogens

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

ASPERGILLUS NIGER

DIOSCOREA

DIOSCOREA ALATA

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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

Journal Article 2010-10

Genetic characterization of some water yam (Dioscorea alata L.) in West Africa with simple sequence repeats

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

A collection of 89 water yam (Dioscorea alata L.) accessions from Benin, Congo, Côte d’Ivoire, Equatorial Guinea, Gabon, Ghana, Nigeria, Sierra Leone and Togo was assessed for genetic diversity using thirteen microsatellite loci. These 89 are some of the D. alata accessions conserved by the Inte...

Enlace original: https://cgspace.cgiar.org/handle/10568/90348

Investigación en Agricultura

CORE GERMPLASM

DIOSCOREA ALATA

GENETIC VARIATION

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Obidiegwu, J.E. , Asiedu, Robert , Ene-Obong, E.E. , Muoneke, C.O. , Kolesnikova-Allen, M. , [Genetic characterization of some water yam (Dioscorea alata L.) in West Africa with simple sequence repeats] , Genetic characterization of some water yam (Dioscorea alata L.) in West Africa with simple sequence repeats

Journal Article 2005

Sprouting and yield of yam (Diocorea spp.) minisetts in relation to sett size, soil moisture and agroecology

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

Seed tuber production of Dioscorea rotundata using the minisett technique was tested on-farm and on-station in different agro-ecological zones in Nigeria. A lower sprouting rate of minisetts was observed in the southern Guinea savanna than in the tropical forest zone. Sprouting and tuber yield in...

Enlace original: https://cgspace.cgiar.org/handle/10568/91890

Investigación en Agricultura

DIOSCOREA ROTUNDATA

SPROUTING

TUBER

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Ayankanmi, T.G. , Shiwachi, H. , Asiedu, Robert , [Sprouting and yield of yam (Diocorea spp.) minisetts in relation to sett size, soil moisture and agroecology] , Sprouting and yield of yam (Diocorea spp.) minisetts in relation to sett size, soil moisture and agroecology

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Resultados de búsqueda

Analysis of yam yields using the additive main effects and multiplicative interaction (AMMI) model

Susceptibility of yam cultivars to minisett rot pathogens

Genetic characterization of some water yam (Dioscorea alata L.) in West Africa with simple sequence repeats

Sprouting and yield of yam (Diocorea spp.) minisetts in relation to sett size, soil moisture and agroecology