الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
To evaluate some barley (Hordeum Vulgare L.) varieties and lines for high yield potential and stable performance under two irrigation treatments (non-stressed and stressed),days to heading and maturity, plant height, spike length, number of grains per spike, number of spike/m2, 1000-grain weight, biological yield and grain yield in addition to stress tolerance index were evaluated during two successive seasons 2019/2020 and 2020/2021 at Sakha Res. Station. All the studied characteristics were significantly affected by water stress at both growing seasons. Mean squares due to seasons, water treatments and genotypes were significant or highly significant for all the studied characters, except season for grain yield. Variances of seasons, water treatments and genotypes interaction were significant for all characters, except the interaction of seasons x water treatments for days to heading, spike length, no. of grains/spike, 1000-grain weight and grain yield. The highest values of grain yield were detected by Line 4 under normal irrigation in the two seasons, Giza 2000 in the first season and Line 5 in the second season under stress condition. Giza 124, Giza 126, Giza 2000, Line 3 and Line 5 considered as the most tolerant genotypes where it had values less than the unity of SSI. In addition, Giza 2000 and Line 5 were the highest yielding genotypes under stress condition, so it can be used in improving barley productivity under water stress condition.