| 시설하우스에서 Corynespora cassiicola에 의해 발생하는 오이 갈색무늬병 |
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권미경, 양광열, 조백호 |
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| A Target Leaf Spot Disease Caused by Corynespora cassiicola on Cucumber Cultivated in Green House |
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Mi Kyung Kwon, Kwang Yeol Yang, Baik Ho Cho |
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| Abstract |
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An epidemic of target leaf spot of cucumber (Cucumis sativus) occurred in commercial greenhouses in Korea in 2000/2001. The early symptoms on the leaves were small brown spots with yellow halos. These lesions became irregular enlarging in diameter and eventually defoliation resulted. The causal agent was a fungus with morphological characteristics matching Corynespora cassiicola. The sequence of the ITS region of C. cassiicola CM2000-1 was identical to that of an authentic strain of Corynespora cassiicola. Optimal germination of spores and mycelial growth on plate was at 30℃. A long dew period on the leaf surface and high temperatures were the main contributing factors for disease development and the greenhouse epidemic. Artificial inoculation of the Korean isolate of C. cassiicola revealed resistance in some Korean cucumber cultivars. |
| Key Words:
Corynespora cassiicola, Cucumber, Environmental factors for disease epidemic, Target Leaf spot disease |
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