Erfelijkheid van klaverrot resistentie (Sclerotinia spp.) in rode klaver (Trifolium pratense) populaties

Tim Vleugels, Erik Van Bockstaele

    Onderzoeksoutput: Hoofdstuk in Boek/Rapport/CongresprocedureC1: Artikels in proceedings van wetenschappelijke congressen, die niet inbegrepen zijn in A1, A2, A3 of P1

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    European red clover (Trifolium pratense) crops are susceptible to clover rot, a destructive disease caused by Sclerotinia trifoliorum or S. sclerotiorum. The lack of knowledge on the heritability of clover rot resistance is, among other reasons, responsible for the slow progress of resistance breeding. In this paper, we acquired insight in the heritability of clover rot resistance through divergent selection by our high-throughput bio-test on an experimental diploid population. The disease susceptibility indices of the first generation after selection for susceptibility and the first and the second generation after selection for resistance were compared with the susceptibility of the original population. The susceptible population (79.2%), the original population (70.5%) and the first generation resistant population (62.3%) differed significantly in susceptibility (p < 0.001). The first (62.3%) and second generation resistant population (60.0%) did not differ significantly in susceptibility. The heritability (h2) of clover rot resistance was low: 0.34 and 0.07 in the first and second cycle of selection respectively. This indicates that mass selection is not suitable to improve clover rot resistance. Family selection may allow a sustained increase in resistance for multiple generations.
    TaalEngels
    TitelCommunications in Agricultural and Applied Biological Sciences
    Aantal pagina's4
    Volume79
    Plaats productieGent
    Datum2014
    Uitgave2
    Pagina's459-462
    StatusGepubliceerd - 2014
    Evenement66th ISCP - Gent, Gent, België
    Duur: 20-mei-2014 → …

    Trefwoorden

    • B390-fytopathologie
    • B390-veredeling

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