摘要 : In an attempt to identify suitable malt barley genotypes for Tigray Region quantifying the magnitude of genotype by environment interaction and assessing the variability of the traits Is paramount importance for selecting and bree... 展开 In an attempt to identify suitable malt barley genotypes for Tigray Region quantifying the magnitude of genotype by environment interaction and assessing the variability of the traits Is paramount importance for selecting and breeding of malt barley genotypes. Eight malt barley genotypes were evaluated in a randomized complete block design using three replications at six locations of Tigray during 2013/2014 cropping season. The combined analysis of variance revealed significant differences (P<0.01) for genotype, location and genotype by location interaction for all response variables studied except the genotype were significant (P<0.05) for the response variables harvest index, number of tillers per plant and thousand seed weight. The eleven traitsstudied showed wider range of variability except the response variables spike length, number of effective tillers and protein content. The principal component analysis showed that the four principal components with Eigen value greater than 1 cumulativelycaptured 9.27% of the variability in the data set.The cluster analysis revealed three major clusters by which the first and third cluster holding three genotypes and the second cluster only with two genotypes. 收起