Genotype x Environment Interaction Effects on Yield of Barley Genotypes in India

Eleven barley (Hordeum vulgare L.) genotypes including four varieties as checks were tested over ten locations in different zones of India. Grain yield data were subjected to the additive main effects and multiplicative interaction (AMMI) analyses. Results indicated a significant genotype x environment interaction (GEI) that influences the relative ranking of genotypes across the environments. It was evident from AMMI analysis that genotype, environment and the first principal component of interaction effect accounted for 96.23% of treatment sum of squares and the first four principal components of interaction effect were found significant. As per AMMI model, two genotypes (RD 2624 and K 675) were identified as having general adaptability. Further, three locations i.e. Rewa, Hardoi and Bawal were found ideal for stable performance of the genotypes.