Vol. 7, Issue 4 (2019)
Combining ability and gene action analysis for certain quantitative traits in rice (Oryza sativa L.) under sodic soil condition
Author(s): Soni Singh, PK Singh, Kanhaiya Lal, Sarvesh Kumar Maurya and Harikant Yadav
Abstract: Twenty-one hybrids generated from crossing between seven lines and three testers were studied along with their parents and one check variety for combining ability and gene action involved in the expression of various characters in rice. The gca and sca effects were significant for majority of the traits. The magnitude of sca variance was higher than the gca variance for all the characters revealed the predominance of non-additive gene action in the inheritance of the characters under study. Among parents IR 870, NDRK 5001, IR11T205, IR14T104, IR11T189 and IR11T197 were the average general combiners for grain yield and the contributing traits. Three crosses, IR12T193 x Narendra Usar 2009, IR11T205 x CSR 10 and NDRK 5001 x CSR 10 showed significant and positive sca effects for grain yield per plant as well as some other yield components. The cross, IR12T193 x Narendra Usar 2009 having highest positive and significant sca effects for grain yield per plant also recorded significant sca effects in desirable direction for days to 50% flowering, flag leaf area, grain per panicle and biological yield per plant. The second ranking cross, IR11T205 x CSR 10 for higher positive and significant sca effect for grain yield per plant showed significant and desirable sca effects for days to 50% flowering, plant height, grains per panicle and 1000-grain weight. The third ranking cross for significant and positive sca effects for grain yield per plant was NDRK 5001 x CSR 10 which exhibited significant and positive sca effects for flag leaf area.
Pages: 1590-1594 | 249 Views 36 Downloads
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How to cite this article:
Soni Singh, PK Singh, Kanhaiya Lal, Sarvesh Kumar Maurya, Harikant Yadav. Combining ability and gene action analysis for certain quantitative traits in rice (Oryza sativa L.) under sodic soil condition. Int J Chem Stud 2019;7(4):1590-1594.
