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Different pathogenicity of ergot isolates (Claviceps purpurea [Fr.] Tul.) on Kentucky bluegrass (Poa pratensis L.)

Author

Listed:
  • Bohumír Cagaš

    (OSEVA PRO Ltd., Grassland Research Station Rožnov-Zubří, Czech Republic)

  • Radek Macháč

    (OSEVA PRO Ltd., Grassland Research Station Rožnov-Zubří, Czech Republic)

Abstract

Ergot, caused by the fungus Claviceps purpurea (Fr.) Tul., belongs to the main constraints in seed production of Kentucky bluegrass (Poa pratensis L.). The level of ergot occurrence depends on the weather conditions during the growing period, harvest year, storage conditions of seed, and post-harvest treatment. The degree of resistance of the grown cultivar plays an important role. Based on greenhouse trials with four different ergot populations (Zubří, Czech Republic; Leutewitz and Munich, Germany; Pullman, Washington, USA) during 3 years, we found pathogenicity to be one of the most important factors. There were significant differences in the amount of ergot bodies formed between the Central European populations (Zubří, Leutewitz) and the American one from Washington State. The degree of pathogenicity has a major impact on the occurrence of ergot sclerotia in seed of Poa pratensis.

Suggested Citation

  • Bohumír Cagaš & Radek Macháč, 2002. "Different pathogenicity of ergot isolates (Claviceps purpurea [Fr.] Tul.) on Kentucky bluegrass (Poa pratensis L.)," Plant Protection Science, Czech Academy of Agricultural Sciences, vol. 38(1), pages 18-22.
    • Handle: RePEc:caa:jnlpps:v:38:y:2002:i:1:id:4815-pps
    DOI: 10.17221/4815-PPS
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