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Journal Article 2005

Autor: Egesi, Chiedozie N. Ogunyemi, S. Asiedu, Robert

A randomised complete block experiment was conducted in the 1998 and 1999 cropping seasons in five major yam growing areas in the yam belt of Nigeria to evaluate the performance and yield stability of six genotypes of water yarn (Dioscorea alata L). Location, genotype and their interaction effect...

Enlace original: https://cgspace.cgiar.org/handle/10568/91791

Investigación en Agricultura
Enlace permanente
Egesi, Chiedozie N. ,  Ogunyemi, S. ,  Asiedu, Robert ,  [Genotype x environment interaction in water yam (Dioscorea alata) yield trials in five yamgrowing sites in Nigeria] ,  Genotype x environment interaction in water yam (Dioscorea alata) yield trials in five yamgrowing sites in Nigeria
Journal Article 2006

Autor: Egesi, Chiedozie N. Asiedu, Robert Ude, G. Ogunyemi, S. Egunjobi, J.K.

Amplified fragment length polymorphism (AFLP) markers were employed to assess intraspecific variability in water yam (Dioscorea alata L.). Fifty-three accessions of diverse geographic origins in West and Central Africa (Benin, Côte d'Ivoire, Ghana, Nigeria and Chad) and Puerto Rico were analysed ...

Enlace original: https://cgspace.cgiar.org/handle/10568/91764

Investigación en Agricultura
Enlace permanente
Egesi, Chiedozie N. ,  Asiedu, Robert ,  Ude, G. ,  Ogunyemi, S. ,  Egunjobi, J.K. ,  [AFLP marker diversity in water yam (Dioscorea alata L.)] ,  AFLP marker diversity in water yam (Dioscorea alata L.)
Journal Article 2002

Autor: Egesi, Chiedozie N. Pillay, M. Asiedu, A. Egunjobi, J.K.

Poor reproductive development in yams (Dioscorea spp.) has often been attributed to the polyploid nature of the crop. In this study, flow cytometry was used to determine the ploidy level of 53 accessions of Dioscorea alata, mostly from West African countries, Chad and Puerto Rico. Nuclei were iso...

Enlace original: https://cgspace.cgiar.org/handle/10568/99954

Investigación en Agricultura
Enlace permanente
Egesi, Chiedozie N. ,  Pillay, M. ,  Asiedu, A. ,  Egunjobi, J.K. ,  [Ploidy analysis in water yam, Dioscorea alata L., germplasm] ,  Ploidy analysis in water yam, Dioscorea alata L., germplasm
Conference Paper 2010

Autor: Ikeorgu, J.G. Egesi, Chiedozie N. Asiedu, Robert

The performance of 5 promising pre-release hybrid water yam (D. alata) varieties (TDa 98/01166; TDa 98/01176; TDa 98/01168; TDa 99/91169; and TDa 99/00240) evaluated for high and stable yields, pest and disease resistance and desirable food qualities, was determined in 2004 and 2005 in 6 location...

Enlace original: https://cgspace.cgiar.org/handle/10568/90578

Investigación en Agricultura
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Ikeorgu, J.G. ,  Egesi, Chiedozie N. ,  Asiedu, Robert ,  [Evaluation of the performance of five hybrid water yam clones in the yam belt of Nigeria] ,  Evaluation of the performance of five hybrid water yam clones in the yam belt of Nigeria
Journal Article 2002

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
Enlace permanente
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

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