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Rare virulences of barley powdery mildew found in aerial populations in the Czech Republic from 2009 to 2014

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  • Antonín DREISEITL

    (Agrotest Fyto Ltd., Kroměříž, Czech Republic)

Abstract

In breeding plants for resistance to disease pathogens major genes are often used. They mostly confer a resistance, which can be overcome by a corresponding pathogen virulence specific to the resistance conferred by that gene. Therefore, monitoring of new virulences in the pathogen population is an integral part of both the study of resistance and practical breeding. The aim of this paper is to present the detection of rare virulences that have been found in aerial populations of Blumeria graminis f.sp. hordei collected in the Czech Republic during the last six years. In total, 822 random isolates originating from cultivated spring and winter barley fields were evaluated on 37 differential varieties and 12 isolates carrying rare virulences were found. At least four virulences to resistances in Laverda, Psaknon, Venezia and SJ048311 were novel. In contrast, four rare isolates avirulent to the resistance Ha were also found. No isolate avirulent to resistances Ra, HH (a8) and Lo was detected. Monitoring of new virulences allows the selection of resistant donors for breeding new varieties and the identification of new resistances.

Suggested Citation

  • Antonín DREISEITL, 2015. "Rare virulences of barley powdery mildew found in aerial populations in the Czech Republic from 2009 to 2014," Czech Journal of Genetics and Plant Breeding, Czech Academy of Agricultural Sciences, vol. 51(1), pages 1-8.
    • Handle: RePEc:caa:jnlcjg:v:51:y:2015:i:1:id:254-2014-cjgpb
    DOI: 10.17221/254/2014-CJGPB
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    References listed on IDEAS

    as
    1. Antonín Dreiseitl, 2004. "Virulence frequencies to powdery mildew resistance genes of winter barley cultivars," Plant Protection Science, Czech Academy of Agricultural Sciences, vol. 40(4), pages 135-140.
    2. Antonín DREISEITL, 2008. "Virulence frequency to powdery mildew resistances in winter barley cultivars," Czech Journal of Genetics and Plant Breeding, Czech Academy of Agricultural Sciences, vol. 44(4), pages 160-166.
    Full references (including those not matched with items on IDEAS)

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    1. Antonín DREISEITL, 2011. "Changes in the population of Blumeria graminis f.sp. hordei in the Czech Republic from 2009 to 2010," Plant Protection Science, Czech Academy of Agricultural Sciences, vol. 47(2), pages 43-51.
    2. Antonín Dreiseitl, 2006. "Powdery Mildew Resistance of Winter Barley Varieties in Czech Official Trials," Czech Journal of Genetics and Plant Breeding, Czech Academy of Agricultural Sciences, vol. 42(2), pages 38-43.
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    4. Antonín Dreiseitl, 2007. "Variety resistance of winter barley to powdery mildew in the field in 1976-2005," Czech Journal of Genetics and Plant Breeding, Czech Academy of Agricultural Sciences, vol. 43(3), pages 87-96.
    5. Antonín DREISEITL, 2012. "Frequency of powdery mildew resistances in spring barley cultivars in Czech variety trials," Plant Protection Science, Czech Academy of Agricultural Sciences, vol. 48(1), pages 17-20.
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