Three field experiments at a randomized complete block design with three replications in two successive seasons of 2009/2010 and 2010/2011 at the Agricultural Research and Experimental Station of the Fac. of Agric., Moshtohor, Benha Univeristy.  The first was nitrogen fertilization at rate of 25 Kg N/fed., the second was at 50 Kg N/fed and the third experiment was at 75 Kg N/fed with ten genotypes five lines produced by using pedigree method (Line No. 1, 5, 7, 8 and 10) and three lines produced by Single Seed Descent SSD (Line No. 2, 4 and 9) and one produced by Bulk method (line No. 6) as well as cultivar Giza 168 were evaluated. Ten genotypes, environments and their interaction were evaluated on grain yield (ard/fed), number of spikes/m², number of grains/spike and 1000-kernel weight. The aim of this study also, to estimate of phenotypic and genotypic stability parameters. The studied traits were number of spikes/m², number of grains/spike and 1000-kernel weight and grain yield (ard/fed). The obtained results could be summarized as follows: 1- Significant mean squares due to environments (two seasons and three nitrogen   fertilizer rates), genotypes and genotypes x environment interaction were detected for the four studied traits. The environment No. 6 (N75 kg N/fed in the second season 2010/2011) gave the highest mean for all traits. However, the Environments No. 1 and No. 4 expressed the lowest values for the studied traits. 2- The line No. 6 (M37Bulk) gave significant highest No. of spikes/m², 1000-kernel weight and grain yield ard/fed followed by genotype No. 3 (G.168) for No. of spikes/m² and grain yield ard/fed. 3- The significance of genotype-environment (Linear) mean squares was detected for all traits except 1000-kernel weight. 4- For grain yield (ard/fed), the genotypes No. 3, 5 and 6 gave mean values above grand mean and their regression coefficients (b_i) did not differ significantly from unity. Also, minimum deviation mean squares S²d_i were detected, revealing that these genotypes were more phenotypic stable than others under the environmental studies for this trait. The lines No. 2, 9 and 6 showed average genetically stable for grain yield. Line number 6 was promising genotype, where gave superior yield and some of its components. This promising genotype No. 6 is likely to be candidate to replace the present alterative varieties whereas gave superior grain yield ard/fed_.