Research in Plant Disease 2010;16(3):320-322.
Published online December 30, 2010.
Sclerotium rolfsii에 의한 소엽풍란 흰비단병
한경숙, 이성찬, 한유경, 김수, 김동휘
Sclerotium blight of Neofinetia falcata Caused by Sclerotium rolfsii in Korea
Kyung Sook Han, Seong Chan Lee, You Kyoung Han, Su Kim, Dong Hwi Kim
The Sclerotium blight was found on Neofinetia falcata at Yong-in city, Gyenggi-do, Korea. The symptom occurred low leaves yellowish and wilt of a whole plant. Severely infected plants were blighted and dies eventually. White mycelial mats appeared on the surface of basal stem and bulbs and the sclerotia were formed on stems, roots, and sphagnum moss. The sclerotia were spherical in shape, 1~3 mm in size and white to brown in color. The optimum temperature for the growth and sclerotia formation was 25~30oC on PDA. On the pathogenicity test, the first symptom was appeared 5 days after inoculation and development to severe stem rot and blight. The causal fungus was identified as Sclerotium rolfsii and we suggested to call that the new Sclerotium blight on Neofinetia falcata caused by Sclerotium rolfsii in Korea.
Key Words: Neofinetia falcata, Orchid, Sclerotium rolfsii, Sclerotium blight

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