INVESTIGATION OF GENOTYPES BY ENVIRONMENTINTERACTION USING GGE BIPLOT ANALYSIS IN BARLEY

Abstract

The aim of this study tp examine the effects of genotype x environment interaction (GEI) on grain yield, componenets and quality characteristics using genotype main effect (G) and Genotype x environment interaction by GGE biplot analysis. We observed signifigant differences among genotypes in grain yield, yield componenets and quality traits; the relationships between yield componenets were used to identify three groups. The GGE biplot indicated taht E4 (Diyarbakir 2009), E5 (Hani 2010/11) and E6 (Diyarbakir 2010/11) were ideal environments for all traits and E4 was a highly efficient model for grain yield. The biplot analysis showed that genotype 1 (G1) was the best genotype in terms of yield and other components and G11 was efficient for quality parameters only, thus, these two genotypes can be recomended to release in barley breeding program. Consequantly, the study showed that biplot analyses is a good analysis method and will be used to make specific selection for multi-factorial studies and specific conditions.