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KMID : 0379120000280010046
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Korean Journal of Mycology
2000 Volume.28 No. 1 p.46 ~ p.48
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Gray Mold of Safflower Caused by Botrytis cinerea
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Abstract
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The gray mold disease was severely occurred on safflower grown in experimental farm of Kyong-sagnam-do Agricultural Research and Extension Services in 1999. At first, the infected leaves discolored gray or dark from the tip and gradually expanded to downword. The fungus also attacked stem, pod and calyx. The infected area became dark and dried, and frequently gray mold grown on the infected area. The causal organism was isolated and proved its pathogenicity according to Koch´s postulate. Conidia of the fungus in mass were hyaline or gray, 1-celled, mostly ellipsoid or ovoid and sized 7.4∼16.8×5.3∼10.4㎛. Conidiophores were observed with their wide size of 2.9∼15.5㎛. The temperature range for mycelial growth was between 5℃ and 30℃ with the optimum temperatures of 20℃ and 25℃. The causal organism was identified as Botrytis cinerea and based On mycological characteristics examined. This is the first report on gray mold of safflower caused by Botrytis cinerea in Korea.
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