ISSN 2167-0447
International Journal of Agricultural Sciences ISSN: 2167-0447 Vol. 4 (4), pp. 157-165, April, 2014. © International Scholars Journals
Full Length Research Paper
Adaptability and Stability studies of introduced Kenaf cultivars for fiber yield using GGE biplots in different environments of Ethiopia
Mulugeta Atnaf1, Tizazu Degu1, Netsanet Abera1 and Zeru Yimer1
1Pawe Research Center, Ethiopian Institute of Agricultural Research, P. O. Box, 25, Pawe, Ethiopia.
*Corresponding author. E-mail: [email protected] Tel. +251 919 157054;
Accepted 01 November, 2013
Abstract
An experiment to study adaptability and stability of introduced kenaf (Hibiscus cannabinus) cultivars for fiber yield was undertaken at different environments of Ethiopia in the 2011 main cropping season. Seven kenaf commercial cultivars introduced from Israeli and USA along with one local check were grown in randomized complete block design with four replicates. The combined analysis of variance over environments showed kenaf fiber yield was significantly affected by environments (E), genotypes (G) and genotype x environment (GE) interactions. The first two principal components (PC1 and PC2) of the GGE explained 88.3% of the sum of squares using environment standardized model. GG-2 from Israeli and the local check had the highest mean fiber yield in that order. However, the local check was relatively most unstable compared with the rest of the genotypes. GG-2 showed both highest kenaf fiber mean yield and stability performance and also was the winner in four of the five test environments. Hence, it could be considered as most adaptable and stable cultivar. Test environments, Pawe and Awassa were the most discriminating of the genotypes and representative of all other test environments.
Key words: Fiber yield, GGE biplot, Hibiscus cannabinus, stability, Ethiopia.