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題 名 | 土壤添加FBN-5A混合物防治蘿蔔黃葉病的效果與原理=Effect of Soil Amendment of FBN-5A Mixture on Control of Radish Yellows and Its Possible Mechanisms for Inhibition of the Pathogen |
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作 者 | 劉俊合; 黃振文; | 書刊名 | 植物保護學會會刊 |
卷 期 | 42:3 2000.09[民89.09] |
頁 次 | 頁169-182 |
分類號 | 435.214 |
關鍵詞 | 蘿蔔; 蘿蔔黃葉病; FBN-5A混合物; 生物防治菌; 土壤添加物; Radish; Radish yellows; FBN-5A mixture; Antagonists; Soil amendment; |
語 文 | 中文(Chinese) |
中文摘要 | 蘿蔔黃葉病為蘿蔔的重要病害之一,是由Fusarium oxysporum f. sp. raphani (Schl.) Kend. & Snyd. 所引起。在含有蘿蔔黃葉病菌的土壤中添加不同濃度的FBN-5A混合物,播種蘿蔔(夏豐二號)種子,結果發現添加1 %(w/w)FBN-5A混合物可使蘿蔔發病率由65 %降到0 %,防治效果最佳。隨後進行二次的田間微試區試驗,亦證明土壤添加FBN-5A混合物可顯著降低黃葉病的發生。將FBN-5A混合物的三個主要成份FBN-5、香菇太空包堆肥及丙烯醇分別拌入病菌土中,隨後利用病原菌纏據蘿蔔根段分析法檢測,發現僅丙烯醇具有顯著抑制病原菌感染蘿蔔根系的功效,惟丙烯醇對蘿蔔根系有毒害作用。土壤添加FBN-5A混合物,七天後,蘿蔔黃葉病菌的菌量顯著地由2’105cfu/g soil降至1×103cfu/g soil以下;至於其它土壤微生物如Trichoderma spp.、Bacillus spp. 及Streptomyces spp.等菌量卻有顯著增加的趨勢。將Gliocladium virens (isolate GV-601)、T. aureoviride (isolate TA-605)、Bacillus spp.(isolates PMB-223及207)、Streptomyces spp.(isolates PMS-702及SS-004)等拮抗菌菌株,分別配合0、0.25及0.75 %(w/w)FBN-5A混合物添加於病菌土中,發現0.25 %(w/w)FBN-5A混合物配合PMB-223、TA-605及GV-601的處理,較未配合添加微生物者更可顯著降低蘿蔔黃葉病菌的感染率。進一步試驗,發現0.25 %(w/w)FBN-5A混合物同時配合T. aureoviride TA-605和/或G. virens GV-601拌入病菌土中,均具有顯著抑制病原菌感染蘿蔔根系的功效。 |
英文摘要 | Radish yellows caused by Fusarium oxysporum (Schl.) f.sp. raphani Kend. & Snyd. has been becoming an important disease of radish (Raphanus sativus L.) in Taiwan. In order to reduce disease incidence of radish yellows, the authors developed a soil amendment called FBN-5A mixture which consisted of several agriculture wastes, fertilizers and allyl alcohol. When this soil amendment (FBN-5A mixture) was added one percent by weight to soils, more than 60% of radish yellows was controlled in greenhouse tests. Amendment of 1% (w/w) FBN-5A mixture in infested soil was significantly effective in controlling radish yellows and consequently promoting radish growth in twice microplot tests. Mechanisms of disease suppression of FBN-5A mixture and its individual components were investigated by the method of radish root colonization. Results indicated that allyl alcohol, the major component of FBN-5A mixture, showed strong inhibition to root colonization of radish seedlings by F. oxysporum f.sp. raphani. However, radish seedlings were injured by allyl alcohol at 250 ppm, but the seedling injury was not happened in treatment of FBN-5A mixture containing the same concentration of allyl alcohol. When 1% (w/w) FBN-5A mixture was applied in infested soils, population of F. oxysprum f. sp. raphani was rapidly reduced from 2╳105 cfu/g soil to less than 1╳103 cfu/g soil within 7 days. In the other hand, popuations of other microorganisms, such as Trichoderma spp. Bacillus spp. and Streptomyces spp. were signifivantly increased in the amended soils. Addition of antagonists including bacillus sp. isolate PMB-223, Gliocladium virens GV-601, Trichoderma aureoviride TA-605 to 0.25% (w/w) FBN-5A mixture-amended soil was able to increase the effect of 0.25% FBN-5A mixture in reducing radish root colonizatiion by the pathogen. However, antagonists alone were not effective in reducing the root colonization. |
本系統中英文摘要資訊取自各篇刊載內容。