Evaluate of Yield and Traits in Relation to Seed Yield in Barley Lines Under Drought Stress and Non-Stress Condition Using Factor Analysis

In order to understand the morphological basis of yield difference and hidden factors in barley lines under drought stress condition، an experiment was conducted for 72 double haploid lines with their parents and 7 local cultivars of barley using two 9×9 simple Lattice (stress and non-stress)، with two replications. The results of variance analysis showed that there are significant differences among all genotypes in studied traits. In non-stress condition factor analysis based on principal component extracted five factors that explained about 72 percent of the total variation and in stress condition six factors were extracted that explained about 78 percent of the total variation. Considering the traits affecting these factors، can be concluded to produce high yield barley in drought stress condition، plants with more flag leaf area، wide reproductive organs، long grain filling period and appropriate height should be selected.