Inheritance of two components of early maturity in groundnut (Arachis hypogaea L.)

    Upadhyaya, H D and Nigam, S N (1994) Inheritance of two components of early maturity in groundnut (Arachis hypogaea L.). Euphytica, 78 (1-2). pp. 59-67. ISSN 1573-5060

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    Abstract

    Knowledge of inheritance of early maturity or its components is important to groundnut breeders in developing short-duration cultivars. This study was conducted to determine the inheritance of two components of early maturity: days to first flower from sowing, and days to accumulation of 25 flowers from the appearance of first flower, using three groundnut genotypes. Two early-maturing (Chico and Gangapuri) and one late-maturing (M 13) genotypes were crossed in all possible combinations, including reciprocals. The parents, F1, F2, F3, and backcross populations were evaluated for days to first flower from sowing, and for days to accumulation of 25 flowers. The data suggest that days to first flower in the crosses studied is governed by a single gene with additive gene action. Chico and Gangapuri possess the same allele for this component of earliness. Three independent genes with complete dominance at each locus appear to control the days to accumulation of 25 flowers. In crosses between late (M 13) and early (Chico or Gangapuri) parents, a segregation pattern suggesting dominant-recessive epistasis (13 late:3 early) was observed for this component. Segregation in the F2 generation (1 late:15 early) of both early parents (Chico x Gangapuri) indicated that the genes for early accumulation of flowers in these two parents are at different loci

    Item Type: Article
    Divisions: UNSPECIFIED
    CRP: UNSPECIFIED
    Uncontrolled Keywords: Arachis hypogaea, groundnut, additive gene action, earliness, epistasis, flowering
    Subjects: Mandate crops > Groundnut
    Depositing User: Ms K Syamalamba
    Date Deposited: 12 Sep 2011 10:04
    Last Modified: 22 Mar 2012 11:16
    URI: http://oar.icrisat.org/id/eprint/1383
    Official URL: http://dx.doi.org/10.1007/BF00021398
    Projects: UNSPECIFIED
    Funders: UNSPECIFIED
    Acknowledgement: UNSPECIFIED
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