wenty eight genotypes (seven parents and their 21 F1 crosses) were evaluated for days to heading, spike length, 1000-grain weight, number of grains/spike and grain yield/plant under three water regimes (35, 65 and 100 % from the field capacity of the soil) over two years. Variance analysis revealed that all
studied traits were significantly affected by soil moisture content. Moreover, genotypes x water regimes interaction was significant for all traits. The parents P3, P5 and P7 were moderately tolerant for drought stress. The crosses (P1 x P7), (P3 x P4), (P3 x P7) showed drought susceptibility index less than 0.5 and they were high tolerant to drought stress. Variance of general combining ability (GCA) and specific combining ability (SCA) were significant for all studied traits. The ratio GCA/SCA was more than one for all studied traits at each level of soil available water over two seasons and over all environments, indicating that additive gene effect was the most important in the inheritance of studied traits. The parents P3 and P5 were considered as good combiners for number of spikes/plant, 1000-grain weight and grain yield/plant, while parents P4 and P7 were considered as the best combiners for days to heading. The crosses (P1 x P4) and (P3 x P4) are considered as the best combinations for all studied traits under different levels of soil available water. Moreover, the crosses; (P1 x P4), (P2 x P6), (P3 x P4), (P4 x P5) and (P4 x P6) could be considered as the best combinations for number of spikes/plant, 1000-grain weight and grain yield/plant