Turkish Journal of Agriculture and Forestry

Heterosis in Bread Wheat




Values of heterosis and combining ability for seven traits were estimated in a 6 x 6 diallel population by using Method 4 of Griffing type analysis. High heterosis was found for the harvest index and yield in the cross Orsa x Ak 702, which had the best specific combining ability. In crosses involving Orso and Ak 702, Orso reduced the plant height while Ak 702 increased it. For Harvest index, plot yield, and thousand kernel weight, Genaro and Marmara 86 were the best general combiners, while Gerek 79 and Ak 702 had the best general combining ability for plant height and number of tillers, respectively.

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