Genetic analysis of yield components, harvest index and biological yield in bread wheat under Mediterranean climatic conditions
1997
Ozkan, H. | Yagbasanlar, T. | Genc, I. (University of Cukurova, Adana (Turkey). Faculty of Agriculture)
A study was conducted to estimate heritability, genetic advance and correlation in bread wheat (Triticum aestivum L. subsp. aestivum) populations derived from an intercultivar cross. The F2 population showed trangressive segregation for number of grains per ear, grain weight per ear, biological yield per plant, grain yield per plant, and harvest index per plant. High heritability combined with considerable genetic advance in this cross indicated that additive gene effects were important for these traits. At the same time, all characters were generally correlated with grain yield in parents and the F2 population. Thus, to increase grain yield, selection in the F2 population should be for plants having more ears, more grains, high harvest index, and high biological yield. However, in a selection program, there is a need to study the corrections among traits, as an increase in one trait is negatively or positively affected by charges in other traits
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