Genetic analysis of agronomic characters in chickpea. II. Estimates of genetic variances from line × tester mating designs

    Singh, Onkar and Gowda, C L L and Sethi, S C and Dasgupta, T and Kumar, J and Smithson, J B (1993) Genetic analysis of agronomic characters in chickpea. II. Estimates of genetic variances from line × tester mating designs. TAG Theoretical and Applied Genetics, 85 (8). pp. 1010-1016. ISSN 1432-2242

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    Abstract

    30 line x tester experiments involving diverse chickpea (Cicer arietinum L.) germplasm were conducted over 8 years and 3 locations to determine the nature of the genetic variance for grain yield and related characters, and the effects of generation and environment on these genetic parameters. Days-to-flowering, 100-seed mass, and seeds per pod were predominantly under the control of additive genetic variance, while both additive and non-additive genetic components of variance were important for days-to-maturity, plant height, primary and secondary branches, pods per plant, and seed yield. The F(1) and F(2) generations were found equally useful in estimating the genetic variances for different characters because the generation did not significantly interact with genetic parameters in the majority of cases. Sites or seasons, on the other hand, showed significant interaction with genetic components of variances; additive variance showed a larger interaction with environments than non-additive variance. This indicated the importance of more than 1 site and/or season for unbiased estimation of the genetic components of variance. The results were compared with previous findings from diallel analyses.

    Item Type: Article
    Divisions: UNSPECIFIED
    CRP: UNSPECIFIED
    Uncontrolled Keywords: Chickpea, Combining ability, Line x tester Genetic variances, Yield and yield components
    Subjects: Mandate crops > Chickpea
    Depositing User: Mr Charan Sai Ch
    Date Deposited: 21 Oct 2011 05:30
    Last Modified: 02 Nov 2011 03:36
    URI: http://oar.icrisat.org/id/eprint/2986
    Official URL: http://dx.doi.org/10.1007/BF00215041
    Projects: UNSPECIFIED
    Funders: UNSPECIFIED
    Acknowledgement: UNSPECIFIED
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