Korean Journal Plant Pathology (한국식물병리학회지)
- Volume 11 Issue 4
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- Pages.380-382
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- 1995
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- 0256-8608(pISSN)
Occurrence of Powdery Mildew on Tomato Caused by Oidiopsis taurica (L v.) Arnaud (=Leveillula taurica) in Korea
Oidiopsis taurica (L v.) Arnaud (=Leveillula taurica)에 의한 토마토 흰가루병 발생
Abstract
Yellow spot or blotch symptoms on the upper surface of leaf, without the production of velvet-like fungi on the lower surface of leaf as in the gray mold of tomato caused by Cladosporium fulvum, were observed in tomato (cv. Seokwang) plants in May, 1995, in a vinyl-house of the experimental plot of Gyeongnam Provincial Rural Development Administration, Chinju, Gyeongnam, Korea. We identified this disease as powdery mildew of tomato caused by Oidiopsis taurica (L v.) Arnaud (=Leveillula taurica), which was new to Korea. Conidia of the fungus were borne on uni- or bi-septated conidiophores which were developed through the stomata of the tomato leaf. The conidia were slender, clavate and variable in size (31~111.6