Plant Protect. Sci., 2002, 38(11):531-532 | DOI: 10.17221/10546-PPS

Virulence complexity and its increasing in the Czech population of Blumeria graminis f.sp. hordei

A. Dreiseitl
Agricultural Research Institute Kroměříž Ltd., 767 01 Kroměříž, Czech Republic

The virulence frequency to 12 resistance genes present in the studied cultivars in the time before their first using in grown cultivars were estimated mainly based on the data of cultivar resistance in the field. The estimated virulence frequency is compared with results obtained from investigations of the air pathogen population in 2001. The comparison shows that virulence complexity increased from about 0.90 in 1971 to 8.73 in 2001. The increase in virulence complexity was caused by necessity of the pathogen to survive on cultivars possessing respective resistance genes, it means by direct selection [(Va1, Va6, Va7, Va9, Va13, Vat, Vk1, VLa, Vg and V(Kr)], indirect selection (Va12) and immigration (Va3).

Keywords: barley; Blumeria graminis f.sp. hordei; Erysiphe graminis f.sp. hordei; powdery mildew; resistance genes; virulence complexity; virulence frequency

Published: December 31, 2002  Show citation

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Dreiseitl A. Virulence complexity and its increasing in the Czech population of Blumeria graminis f.sp. hordei . Plant Protect. Sci. 2002;38(SI 2 - 6th Conf EFPP):531-532. doi: 10.17221/10546-PPS.
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    References

    1. BROWN J.K.M., JØRGENSEN J.H. (1991): A catalogue of mildew resistance genes in European barley varieties. In: JØRGENSEN J.H. (ed.): Integrated Control of Cereal Mildews: Virulence and Their Change. Risø National Laboratory, Roskilde: 263-286.
    2. B RÜCKNER F. (1965): Physiological races of powdery mildew (Erysiphe graminis DC.) on barley determined in Czechoslovakia in 1963 and the possibility of using them in breeding for resistance. In: Vědecké práce Výzkumného ústavu obilnářského, Kroměříž.
    3. DREISEITL A. (1997): Changes in the barley powdery mildew population in the Czech Republic (1993-1994). Ochr. Rostl., 33: 281-296.
    4. DREISEITL A. (2000a): Direct selection in the Blumeria graminis f.sp. hordei population in the Czech Republic. Acta Phytopath. Entomol. Hung., 35: 317-322.
    5. DREISEITL A. (2000b): Hitch-hiking in domestic population of Blumeria graminis f.sp. hordei. In: Proc. XVth Czech and Slovak Plant Protection Conf. Sept. 12-14, Brno, Czech Republic: 146-147.
    6. DREISEITL A. (2001): Migration and Czech population of Blumeria graminis f.sp. hordei. In: TVARŮŽEK L. (ed.): Healthy Cereals. Proc. Conf., July 2-61, Kroměříž: 167-169.
    7. DREISEITL A., JUREČKA D. (1996): Výskyt chorob ječmene jarního v České republice v letech 1989-1995. Ochr. Rostl., 32: 221-229.
    8. DREISEITL A., JØRGENSEN J.H. (2000): Powdery mildew resistance in Czech and Slovak barley cultivars. Plant Breeding, 119: 203-209. Go to original source...
    9. LIMPERT E., FISCHBECK G. (1987): Distribution of virulence and of fungicide resistance in the European barley mildew population. In: WOLFE M.S., LIMPERT E. (eds): Integrated Control of Cereal Mildews: Monitoring the Pathogen. Martinus Nijhoff Publ., Dordrecht, Boston, Lancaster: 9-30.

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