مقایسه عملکرد لاین‌های امیدبخش جو در شرایط تنش شوری

In order to study the effect of salinity stress on yield and yield components of 20 cultivars and elite lines of barley, an experiment in completely randomized blocks with three replications over two years conducted in the Birjand Research Center of Agriculture from 2010-2011. 18 elite lines with Nosrat and line No.4 as checks were investigated. There was a significant difference between years in 1% probability level for days to heading and days to physiological maturity, spike length, plant height and 1000 seed weight. The difference between lines were significant in 5% probability level in aspects of peduncle length and number of seed per spike and in 1% probability level in aspects of plant height and 1000 seed weight. Traits such as days to heading and days to physiological maturity, spike length and seed yield hadn’t any significant differences. The interaction effect of line in year was not significant on any traits. Lines No. 16 and 18 with averages of 5.83 and 5.77 ton per hectare had the highest yield, respectively, which their difference were not significant with lines No. 4, 7, 9, 11,13 and 14. Lines with more grain yield have higher performance in terms of peduncle length, plant height, seed weight and grain per spike but trait grain per spike in all of these lines was common.