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來源資料
頁籤選單縮合
題 名 | 瓜類黑點根腐病菌之殘存=Survival of Monosporascus Cannonballus in the Field Soil |
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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 | 8:3 1999.09[民88.09] |
頁 次 | 頁121-124 |
分類號 | 435.26 |
關鍵詞 | 瓜類; 黑點根腐病菌; Monosporascus cannonballus; Muskmelon; Root rot; Vine decline disease; Ascospore germination; Survival; |
語 文 | 中文(Chinese) |
英文摘要 | Monosporascus cannonbullus produces a single ascospore per ascus, but no conidial stage has been observed. Thick and short hyphal cells were found in vegetative mycelia grown on PDA for one month. It was rare to see ascospore germination of M. caimonballus. The percentage of ascospore germination of the isolate MC-E3 was lower than 0.59%. The pathogen was grown on a sand-rice chaff medium for 30 days which was used as an inoculim (160 ascospores/g medium) in the following experiments. Inoculum mixed with soil was put on the outdoors. The survival ability off the pathogen was evaluated bimonthly in the greenhouse by direct seeding the muskmelon seeds into the artificial infested soil. M. cannonballus could cause root rot on muskmelon seedlings within 10 months after the infested soil incubated at outdoor. Re- isolation of the pathogen from diseased roots also showed that the inoculum could survive in the infested soil for 10 months. Diseased roots of dry and undecomposed muskmelon caused by the fungus was collected from the field. It was found that M. cannonballus could be isolated from diseased tissues after 1.5 months incubation. The ability of vegetative mycelium on diseased roots to act as inoculum was lower than ascospores. |
本系統中英文摘要資訊取自各篇刊載內容。