Effect of Drought Stress on Morphological Traits of Different Barley Varieties

Ten barley cultivars base a Randomized Complete Block design with three replications in normal and drought conditions investigated in 2014-15. Grain yield, harvest index, plant height spike length, spike weight, awn length, thousand grain weight, stem diameter, seed length, seed diameter, peduncle length, day to heading and day to physiological maturity were measured. Results of variance analysis showed that in normal conditions of moisture between the varieties in terms of grain yield, harvest index, spike length, spike weight, awn length, stem diameter, seed length, seed diameter, peduncle length, days to heading and days to physiological maturity and In stress condition the varieties in grain yield, harvest index, plant height, spike length, spike weight, awn length, stem diameter, seed length, seed length and peduncle length showed significant difference. Path analysis indicated that in normal conditions, direct effect, harvest index, plant height and peduncle length on yield is positive and high. in stress condition, harvest index, positive and direct effect and days to heading negative and direct effect on grain yield were that positive effects of increased correlation of with grain yield and, negative effects of reduce the correlation between grain yield and selected attributes will be followed by regression. Results from this study showed that Characteristics such as harvest index, plant height, peduncle length, awn length, and thousand grain can be as indicators for selecting cultivars with high yield in stress and non-stress condition can be recommended.