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http://dx.doi.org/10.5423/RPD.2003.9.3.149

Black Leaf Spot of Dendrobium phalaenopsis Caused by Fusarium moniliforme  

Lee, Dong-Hyun (Department of Applied Biology and Sunchon National University)
Hur, Jae-Seoun (Department of Environmental Education, Sunchon National University)
Koh, Young-Jin (Department of Applied Biology and Sunchon National University)
Publication Information
Research in Plant Disease / v.9, no.3, 2003 , pp. 149-152 More about this Journal
Abstract
Black leaf spot disease occurred on Dendrobium phalaenopsis grown in farmer's fields located in Bonggangmyon, Gwangyang-eup, Jeonnam, Korea. Black small spots occurred on leaves at initial stage of infection and the infected leaves turned yellow from the tip. The yellow leaves were falled, resulting in stem blighting or eventual death of the entire plant. White mycelial colony of the causal fungus grown on potato dextrose agarturned dark violet later and optimum temperature for the mycelial growth was $25^{\circ}C$. The causal fungus isolated from the black leaf spot on D. phalaenopsis was identified as Fusarium moniliforme based on the mycological characteristics and pathogenicity. The fungus also caused same symptoms on leaves of Phalaenopsis sp. and Cymbidium sp. as well sa D. phalaenopsis by wound inoculation. This is the first report on black leaf spot of D. phalaenopsis caused by F.moniliforme in Korea.
Keywords
Black leaf spot; Dendrobium phalaenopsis; Fusarium moniliforme;
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