Characterzation and evaluation of some genotypes in bread wheat using SSR markers under different heat conditions [electronic resource].

Includes reference

Heterosis and specific combining ability analysis were studied in a half diallel set of bread wheat for number of spikes per plant. 1000- grain weight. number of kernels per spike, grain yield per plant, protein and carbohydrate percentages under Gemmeiza location (normal temperature ) and Mataana location (high temperature). Eight genotypes and the resultant twenty eight crosses mean squares were found to be highly significant for all studied traits at the two different locations and their combined data. Parents vs. crosses mean squares as an indication to average heterosis overall crosses, were found to be highly significant for protein and carbohydrate percentages at the two different locations and their combined data. For1000-grain weight and number of kernels per spike the estimated values of parents vs. crosses were highly significant at Gemmeiza location and their combined data. Specific combining ability was found to be highly significant for all studied characters under study at each location and the combined data. For grain yield per plant, three hybrid combinations Line 1 x Sids 1, Line 2 x Line 5 and Line 4 x Line 5 showed significant specific combining ability effects at the two different locations and their combined data.

Summary in arabic.

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