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Investigation of biological peculiarities of Blumeriella jaapii

Author

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  • A. Valiushkaite

    (Plant Protection Laboratory, Lithuanian Institute of Horticulture, LT-4335 Babtai, Kaunas District, Lithuania)

Abstract

Leaf spot pathogen is characterized as a highly developed parasite after investigation of development peculiarities of the fungus in pure culture and natural conditions. The degree of correlation depended on the medium. Impact of incubation temperature on Blumeriella jaapii (Rehm) Arx growth was different. Fungi colonies formed more intensively and their diameter increased significantly under higher temperature. Optimal conditions for the disease prevalence are 15-20°C and moisture. Relative humidity and precipitation influenced maturation of ascomycetes and discharge of ascospores (r = +0.89). Microscopic analysis of leaves showed that during winter thaw, when the average temperature is about 0 ± 5°C and relative humidity is higher than 70%, was possible to detect mature ascomycetes and conidia. It is possible to affirm that lower temperature than it was assumed is sufficient for formation of ascomycetes.

Suggested Citation

  • A. Valiushkaite, 2002. "Investigation of biological peculiarities of Blumeriella jaapii," Plant Protection Science, Czech Academy of Agricultural Sciences, vol. 38(SI2-6thCo), pages 399-401.
    • Handle: RePEc:caa:jnlpps:v:38:y:2002:i:si2-6thconfefpp:id:10505-pps
    DOI: 10.17221/10505-PPS
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