Abstract: The experiment was conducted to evaluate ten hull-less barley (Hordeum vulgare L.) genotypes (line-1 to line-7, Giza 129, Giza 130 and Giza 131) for high yield potential and stable performance under two irrigation treatments (normal and stress). Plant height, spike length, spikes No. m-2, grains number/spike, 1000-grain weight, biological yield/plot and grain yield/plot were evaluated during two successive seasons 2010/2011 and 2011/2012 at Sakha Agricultural Research Station (ARC), Egypt. Results revealed that negative significant effects observed for water stress in both growing seasons. Line-3, line-4 and Giza 130 which had the highest biological yield and grain yield especially under stress condiotion. Drought Susceptibility Index (DSI) over both conditions indicated that line-2, line-7, Giza 130 and Giza 131 were tolerant for most traits, indicating the importance of these parents in this regard. The correlation analysis showed that highly significant positive correlations between yield components and grain yield under the two conditions were detected.