农业环境科学学报2012，Vol.31Issue(9)：1696-1701,6.
不同腐解方式下棉秆腐解液对棉花枯、黄萎病菌的化感效应
Allelopathy of Different Decomposed Liquids of Cotton Stalk on Fusarium oxysporum and Verticillium dahliae
摘要
Abstract
In this study, two patterns of decomposition, naturally decomposing and decomposition by inoculating special decomposing strain, were applied to decompose cotton stalk, and allelopathy of the decomposed liquids on Fusarium oxysporum and Verticillium dahliae were studied. The results revealed that both of the decomposed liquids strongly inhibited hypha growth, as well as spore germination of Fusarium oxysporum and Verticillium dahliae, and the inhibitory level increased with the increasing of the decomposed liquid concentrations. As for the effects of the cotton stalk natural decomposed liquids examined, the highest inhibition rates on hypha growth of Fusarium oxysporum and Verticillium dahliae were 58.17% and 48.16%, and the highest inhibition rates on spore germination of these two pathogens were 23.29% and 16.22%, while the median effect concentration(EC50) of toxicity to them were 33.20 g·L‐1 and 45.20 g·L‐1, respectively; as for the effects of the microbial decomposed liquids examined, the values for the above parameters to the same two pathogens were 71.63% and 79.04%; 35.45% and 42.74%; and 24.18 g·L‐1 and 20.75 g·L‐1 , respectively. It was indicated that decomposed cotton stalk possessed the potential to be botanical fungicide. Furthermore, in this case microbial decomposed cotton stalk could effectively enhance the inhibition of decomposed liquids on Fusarium oxysporum and Verticillium dahliae.关键词
棉秆/腐解液/腐解方式/化感效应/棉花枯萎菌/棉花黄萎菌Key words
cotton stalk/ decomposed liquids/ decomposing methods/ allelopathy/ Fusarium oxysporum/ Verticillium dahliae分类
资源环境引用本文复制引用
张琴,李艳宾,滕立平,岳静..不同腐解方式下棉秆腐解液对棉花枯、黄萎病菌的化感效应[J].农业环境科学学报,2012,31(9):1696-1701,6.基金项目
国家自然科学基金项目(30960071) （30960071）
