IMPACT OF INFECTIONS WITH Trichoderma pleurotum AND Trichoderma pleuroticola ISOLATES ON YIELDING OF WILD STRAINS OF Pleurotus ostreatus (Fr.) Kumm. OBTAINED FROM NATURAL SITES

Krzysztof Sobieralski

Poznań University of Life Sciences

Marek Siwulski

Poznań University of Life Sciences

Lidia Błaszczyk

Institute of Plant Genetics, Polish Academy of Science in Poznań

Barbara Frąszczak

Poznań University of Life Sciences

Iwona Sas-Golak

Poznań University of Life Sciences



Abstract

Green moulds of Trichoderma genus cause high losses in oyster mushroom cultivations in many countries. Recently two new species i.e. T. pleurotum and T. pleuroticola have been identified. In the experiment yielding levels of Pleurotus ostreatus growing on substrates infected with Trichoderma isolates were investigated. The following Trichoderma isolates were used: T. pleurotum designated as KWK/17 and T. pleuroticola designated as KMS/21 as well as three wild strains and one cultivated strain of P. ostreatus. It was found that the substrate infections with T. pleurotum and T. pleuroticola isolates caused significant yield reductions of the examined strains of oyster mushrooms. The infection with the T. pleuroticola KMS/21 isolate caused a significantly higher yield drops than the infection with the T. pleurotum KWK/17 isolate in comparison with yields recorded from uninfected substrates.

Keywords:

green moulds, molecular identification, substrate, oyster mushroom, yield reduction

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Published
2012-02-29



Krzysztof Sobieralski 
Poznań University of Life Sciences
Marek Siwulski 
Poznań University of Life Sciences
Lidia Błaszczyk 
Institute of Plant Genetics, Polish Academy of Science in Poznań
Barbara Frąszczak 
Poznań University of Life Sciences
Iwona Sas-Golak 
Poznań University of Life Sciences



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