Powdery Mildew Resistance in 268 Entries of Hordeum vulgare

W.M. Jiang, Jørgen Helms Jørgensen, J Torp

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    Abstract

    A collection of 24 'Spontaneum' barley [H. vulgare ssp. spontaneum] entries and one comprising 244 Ethiopian barleys [H. vulgare ssp. vulgare] were tested for resistance to 4 powdery mildew [used by Erysiphe graminis f. sp. hordei] cultures that carried genes for virulence corresponding to most of the known powdery mildew resistance genes. The infection types and spectra of resistance were compared to those of 31 test lines with 35 known resistance genes to find possible new resistance genes and to reveal known resistance genes. The collections may possess some new and some known resistance genes, but most were not effective against all 4 pathogen cultures. Five 'Spontaneum' barley entries were resistant with the same low infection type of all 4 cultures and appear to have an effective resistance that may be useful for resistance breeding.
    Original languageEnglish
    JournalActa Agriculturae Scandinavica, Section A - Animal Science
    Volume34
    Issue number4
    Pages (from-to)480-484
    ISSN0906-4702
    Publication statusPublished - 1984

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