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KMID : 0379119940220040355
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Korean Journal of Mycology
1994 Volume.22 No. 4 p.355 ~ p.365
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Isolation and Identification of Hyperparasites against Powdery Mildew Fungi in Korea
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Abstract
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An extensive survey was conducted on the occurrence of hyperparasites (HP) on powdery milew species in Korea during 1991-1994 seasons. As a result, a total of 1070 materials infected with powdery mildew fungi were collected. Of these, 92 ones were infected with the HP; b with the unidentified HP and the rest 8b with Ampelomyces quisqualis. This showed infection of powdery mildew species with HP was common phenomenon in nature and A. quisqualis was the most common HP in Korea. To prove the hyperparasitism of A. quisqualis, 24 isolates from 32 collections in 1992 year were successfully cultured. All isolates tested were hyperparasitic to cucumber powdery mildew, Sphaerotheca fusca.
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