Evaluation and selection in bread wheat segregating populations for yield effective indices in dryland conditions
2007
Sheikh, Fatemeh
Evaluation and selection in segregations populations in the basic methods of wheat breading.Segregation of traits in hybrids of bread wheat begins from F2 population and continues until several generations later. At first, the best combinations of hybrids were selected and then from among of them base of traits: plant height, strong tillers, unity of tillers, spike form, resistance to shattering, suitable leaf angle, resistance to preharvest sprouting and were selected individual plant. In this study, in F2 generation 197 population of bread wheat evaluated in modified pedigree-bulk method. At first, from among of F2 generation were selected 1120 individual plant base of morphological traits in the field, then thrashing and discarding the shriveled seeds. The seeds remain from each number bulked together that they were 110 numbers for F3 generation.
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