Combining Ability aAnd Genetic Variance Components of Yield and Yield Components in F1 And F2 Diallel Crosses of Soybean | ||
| Journal of Plant Production | ||
| Article 10, Volume 12, Issue 4, April 2021, Pages 435-446 PDF (1.37 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jpp.2021.169636 | ||
| Authors | ||
| F. A. Waly; R. A. Ibrahim | ||
| Food Legumes Research Department, Field Crops Research Institute, ARC, Giza, Egypt | ||
| Abstract | ||
| Combining ability and genetic components of six soybean parents and their F1 and F2 half-diallel crosses were measured in Etay El-Baroud Agriculture Research Station during 2017, 2018 and 2019. mean square due to genotypes; parents, crosses and parent vs. crosses were significant for all studied traits in both generations, except parent vs. crosses for protein and oil contents in F1 and both number of seeds/pod and 100-seed weight in F2. Mean squares due to general and specific combining ability were significant for all studied traits in F1 and F2, except SCA for number of seeds/pod in F2. The ratios of GCA/SCA were higher than the unit for all studied traits in both F1 and F2 generations. Mean squares due to additive (a) and dominance (b) components were significant for all studied traits in both F1 and F2. The two parents Dr101 and Giza111 and the three crosses Giza111 x Giza83, Dr101 x Giza83 and Dr101 x Giza111 gave the highest seed yield/plant. Dr101 expressed negative ĝi effect for maturity period and positive ĝi effect for most yield traits in both generations. The cross combinations of Giza111 and Dr101 with Giza83 had the significant positive Ŝij effect for seed yield/plant in both F1 and F2. The additive genetic variance (D), dominance genetic variations (H1) and (H2) were highly significant for all traits in both F1 and F2 hybrids except additive type for number of seeds/pod in F1. Pedigree method consider an excellent method to select superior lines in the early segregated. | ||
| Keywords | ||
| Combining ability; Genetic variation; Seed yield; Soybean | ||
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