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題名 | 臺灣發生之冬瓜萎凋病=Occurrence of Fusarium Wilt of Wax Gourd (Benincasa Hispida) in Taiwan |
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作者 | 蔡竹固; 陳瑞祥; 童伯開; | 書刊名 | 植物病理學會刊 |
卷期 | 7:4 1998.12[民87.12] |
頁次 | 頁205-208 |
分類號 | 435.265 |
關鍵詞 | 臺灣; 冬瓜; 萎凋病; Fusarium wilt of wax gourd; Fusarium oxysporum f.sp.benicasae; |
語文 | 中文(Chinese) |
英文摘要 | In Feb. 1997, Fusarium wilt of wax gourd (Benincasa hispida) was found for first time in Taiwan. The pathogen produces three types of spores. Microconidia are singled celled, elliptical to allantoid, 5-12.5x2.5μm. Macroconidia are slightly sickle-shaped, mostly 3-5 septate, 20-45x2.5-5μm. Chlamydospores formed mostly in hyphae, 6.25-15x5-15μm. The optimum temperatures for conidial germination, mycelial growth, and sporulation were from 25 to 30 C. In pathogenicity study, and isolate (FOB-6) of the fungus attacked five cultivars of B. hispida, but not muskmelon (Cucumis melo, Reticulatus Group), squash ( Cucurbita moschata), cucumber (Cucumis sativus), and oriental pickling melon ( Cucumis melo, Conomon Group). Pathogenicity tests and isolations from inoculated plants confirmed that Fusarium oxysporum Schl. f. sp. benincasae Gerlagh & Easter was the pathogen. When five economic cultivars of wax gourd from Know-You Seed Co. in Taiwan were inoculated with conidial suspension (10�� spores/ml) of the isolate FOB-6, result showed that cultivars Tai-Ping and Thin-Longer were more susceptible to the pathogen than cultivar Green Tiger. |
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