Plant Protect. Sci., 2002, 38(11):305-307 | DOI: 10.17221/10474-PPS

Trichoderma polysporum as possible weak pathogen of tulip bulbs and roots

A. Piwoni
Institute of Plant Protection & Quarantine, Agricultural University, Lublin, Poland

In the spring 2000, on tulip plantations in south-eastern Poland, spots of died-off plants were observed. The inhibited growth, wilting of leaves and yellowish necrosis on roots and scales surface occurred especially in low-lying areas. Mycological analysis indicated the presence of Trichoderma polysporum (Link ex Pers.) Rifai on the bulbs and roots of all tested plant samples. Pathogenicity test of 7 T. polysporum isolates was carried out on forced tulips cv. Merry Christmas in flower pots. After flowering, brownish necrosis (covering 5-30% of the surface) on the bulbs and roots were observed, as well as white-yellowish mycelium heaps of T. polysporum. Typical Trichoderma symptoms on above-ground plant parts like light-gray leaves tips were not observed.

Keywords: Trichoderma polysporum; tulip; pathogenicity

Published: December 31, 2002  Show citation

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Piwoni A. Trichoderma polysporum as possible weak pathogen of tulip bulbs and roots. Plant Protect. Sci. 2002;38(SI 2 - 6th Conf EFPP):305-307. doi: 10.17221/10474-PPS.
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