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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Theoretical and applied genetics 85 (1992), S. 419-422 
    ISSN: 1432-2242
    Keywords: Hordeum vulgare ; Segregation distortion ; Esterase isozymes ; Geographic distribution
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary A distorted segregation of esterase alleles at the complex loci, Est1, Est2 and Est4, was found in an F2 population. This distortion is typical for cross combinations between the Ga2Ga2 and ga2ga2 genotypes responsible for segregation distortion, since the Ga2 locus is linked with the complex loci encoding the esterase isozymes. The segregation of esterase isozyme patterns in F2 populations between 473 varieties of barley and a tester of ga2ga2 genotype was examined, and the genotypes inducing segregation distortion were detected. Varieties with a ga2ga2 genotype are widely distributed throughout the world, whereas Ga2Ga2 varieties are found only in eastern and southern regions of Asia, from Japan to North India, with a low frequency. In varieties collected from these regions, some associations were detected between alleles at the Ga2 locus and esterase isozyme patterns. Additionally, most of the Ga2 barley varieties are naked and possess a BtBtbt2bt2 genotype for a non-brittle rachis.
    Type of Medium: Electronic Resource
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