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Theoretical and Applied Genetics

, Volume 83, Issue 8, pp 956–962 | Cite as

Genetic analysis of agronomic characters in chickpea

I. Estimates of genetic variances from diallel mating designs
  • O. Singh
  • C. L. L. Gowda
  • S. C. Sethi
  • T. Dasgupta
  • J. B. Smithson
Originals

Summary

Twenty-eight diallel trials over 8 years and two locations were analysed to estimate genetic variances for agronomic characters of chickpea (Cicer arietinum L.). The data were analysed according to Method 4 and Model I of Griffing (1956). Days to flowering, plant height, and seed size were found to be predominantly under additive inheritance and were highly predictable. Both additive and non-additive genetic components were important for seed yield, number of branches, pods per plant, and seeds per pod. Although both general combining ability (gca) and specific combining ability (sca) varied significantly with generation, components of gca mean squares were invariably much larger than gca x generation interaction components, indicating that either the F1 or the F2 generation can be used to estimate the gca components effectively. Combined diallel analysis of F2s over locations revealed the importance of combining ability x location interactions and emphasized the need for testing over more than one location for the precise estimation of combining ability. The implications of these findings and those reported earlier in the literature on the breeding strategies/methods for the genetic improvement of agronomic characters in chickpea are discussed.

Key words

Chickpea Diallel analysis Yield and yield components Gene effects Genotype x environment interaction 

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Copyright information

© Springer-Verlag 1992

Authors and Affiliations

  • O. Singh
    • 1
  • C. L. L. Gowda
    • 1
  • S. C. Sethi
    • 1
  • T. Dasgupta
    • 1
  • J. B. Smithson
    • 1
  1. 1.Legumes ProgramInternational Crops Research Institute for the Semi-Arid Tropics (ICRISAT)Andhra PradehsIndia

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