Mapping genes for deep-seeding tolerance in barley

Hidekazu Takahashi, Kazuhiro Sato, Kazuyoshi Takeda

    Research output: Contribution to journalArticlepeer-review

    22 Citations (Scopus)

    Abstract

    Deep-seeding tolerance, the emergence of seedlings from deep seeded conditions, is involved in stand establishment in semi-arid regions, where the soil surface is too dry for seed germination. Genes determining deep-seeding tolerance in barley were mapped using two doubled haploid populations derived from the following crosses: Harrington x TR306 (H/T) and Steptoe x Morex (S/M). Significant quantitative trait loci (QTLs) for deep-seeding tolerance were found in each population. Two QTLs explained 40% of the phenotypic variation in the H/T population and one QTL (S/M) 8% of the total phenotypic variance. Multiple QTLs accounting for coleoptile length and first internode length were detected in both populations. In the H/T population, there were coincident QTLs for deep-seeding tolerance, coleoptile length and first internode length on the long arm of chromosome 5H. These QTLs correspond with previously reported QTLs for abscisic acid and gibberellic acid response. QTL coincidence may be due to the pleiotropic effects of alleles at a single locus. This information may be useful for breeding programs manipulating morphological and physiological traits in order to develop varieties for semi-arid regions.

    Original languageEnglish
    Pages (from-to)37-43
    Number of pages7
    JournalEuphytica
    Volume122
    Issue number1
    DOIs
    Publication statusPublished - 2001

    Keywords

    • Barley
    • Deep-seeding tolerance
    • Inheritance
    • QTL

    ASJC Scopus subject areas

    • Agronomy and Crop Science
    • Genetics
    • Plant Science
    • Horticulture

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