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Powdery Mildew Resistance of Winter Barley Varieties in Czech Official Trials

Author

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  • Antonín Dreiseitl

    (Agrotest fyto, Ltd., Kroměříž, Czech Republic)

Abstract

In 1996-2005, resistance to powdery mildew was studied in 167 winter barley varieties (of them 83 two-rowed and 84 six-rowed, 45 Czech and 122 foreign ones) included in the Czech Official Trials in that period. Seventeen known resistances to powdery mildew were identified (Ar, Bw, Di, Dr, Dt, Ha, HH, Ch, IM9, La, Lu, Ly, Ra, Ru, Sp, St and We). Unknown resistances were found in 25 varieties, in six of which (= 3.6% of all the examined set) they were effective to all used pathotypes of the pathogen. Six varieties exhibited heterogeneity in the examined trait, i.e. they are composed of lines with different resistances to powdery mildew. The most frequent resistances in the set were Ra, which was detected in 89 varieties (= 53%), and Bw was found in 30 varieties (18%). The resistances Sp, Ly, Ha, HH and Ch were also frequent. However, the frequency of the last three resistances cannot be quantified since we were not able to identify these resistances during the whole examined period.

Suggested Citation

  • 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.
    • Handle: RePEc:caa:jnlcjg:v:42:y:2006:i:2:id:3652-cjgpb
    DOI: 10.17221/3652-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 & Daniel Jurečka, 2003. "Severity of powdery mildew on spring barley in the Czech Republicin 1971-2000," Plant Protection Science, Czech Academy of Agricultural Sciences, vol. 39(2), pages 39-51.
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    Cited by:

    1. Antonín DREISEITL, 2011. "Presence of the newly designated powdery mildew resistance Landi in some winter barley cultivars," Czech Journal of Genetics and Plant Breeding, Czech Academy of Agricultural Sciences, vol. 47(2), pages 64-68.
    2. 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.
    3. Antonín Dreiseitl, 2007. "Severity of powdery mildew on winter barley in the Czech Republic in 1976-2005," Plant Protection Science, Czech Academy of Agricultural Sciences, vol. 43(3), pages 77-85.

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