Vol. 7, Issue 1 (2019)
Analysis of variance for combining ability and gene action studies for morphological traits on the basis of F1 and F2 generation of crosses in winter x spring wheat derivatives
Author(s): AA Shah, BA Bhat, RA Bhat and SK Mondal
Abstract: Globally, almost 50% of wheat cultivated in the developing world, including India (50 million ha), is sown under rainfed conditions, which receive less than 600mm of rain per annum. The problem of drought is in the soil with low water holding capacity especially in the rain fed areas of mountainous and sub-mountainous regions. The present investigation was carried out at the research farm of the Division of Plant Breeding & Genetics, SKUAST –Jammu, Chatha, during rabi 2104-15, rabi 2015-16 and rabi 2016-17. Observation were recorded on 50% flowering(no), days to maturity (no), flag leaf area (cm2), plant height (cm).In line x tester analysis, mean squares of treatment combinations (parents, crosses and interactions) significant in both the generations. The mean squares for comparisons of parents’ vs crosses were also significant. This revealed that significant magnitude of variability was present in the parental material (line and tester) and on their crossing in F1 and F2 generation population. Combining ability analysis carried over F1 and F2 generation revealed that variance for crosses, testers and partly in lines was significant for almost all the traits. The gca effects was greater than sca effects for most of the traits. The compassion of relative magnitude of gca and sca variances indicated greater magnitude of gca variance than sca variance for morphological traits indicating the presence of additive gene action for the inheritance of these traits.
Pages: 647-651 | 403 Views 72 Downloads
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How to cite this article:
AA Shah, BA Bhat, RA Bhat, SK Mondal. Analysis of variance for combining ability and gene action studies for morphological traits on the basis of F1 and F2 generation of crosses in winter x spring wheat derivatives. Int J Chem Stud 2019;7(1):647-651.
