Research in Plant Disease 2003;9(3):149-152.
Published online September 30, 2003.
Fusarium moniliforme에 의한 덴파레 검은점무늬병
이동현, 허재선, 고영진
 
Black Leaf Spot of Dendrobium phalaenopsis Caused by Fusarium moniliforme
Dong Hyun Lee, Jae Seoun Hur, Young Jin Koh
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 yellowing 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 agar turned dark violet later and optimum temperature for the mycelial growth was 25℃. 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 as D. phalaenopsis by wound inoculation. This is the first report on black leaf spot of D. phalaenopsis caused by F. moniliforme in Korea.
Key Words: Black Leaf spot, Dendrobium phalaenopsis, Fusarium moniliforme


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