Genetic Analysis for Yield and its Components in Soybean Hybrids [Glycine max (L.) Merr.].
2015
Ghrood Al-Aswd | Mahmud Sabbouh | Saoud Shehab | Samir Ali Al-Ahmad
The present study was undertaken at the first of May Station, General Commission for Scientific Agricultural Research (GCSAR), during 2008 and 2009 growing seasons to estimate General (GCA) and Specific (SCA) Combining Ability and heterosis for seed yield, number of pods and number of branches per plant, number of seeds / pod and plant height.The results showed that GCA and SCA mean squares were significant for all studied traits indicating that additive and non – additive gene actions were controlling inheritance of these traits. The ratios of GCA/SCA indicated that additive gene action was controlling inheritance of plant height while non-additive gene action was more important in inheritance of number of pods per plant. GCA effects showed that the genotype Sb235 and Sb308 were good combiner for seed yield trait. SCA effects showed that the hybrids (Sb181×Sb305) and (Sb235×Sb298) were the best F1 combination for seed yield. Many hybrids showed significant useful values of mid and better parent heterosis in most studied traits.
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