新型苯并咪唑类化合物对棉花枯萎病菌的毒力测定  

Toxicity Test of Novel Benzimidazole Derivatives to Fusarium Oxysporum

作　　者：高文章 韩新才 代文哲 巨修炼 Gao Wenzhang;Han Xincai;Dai Wenzhe;Ju Xiulian(School of Environmental Ecology and Bioengineering,Wuhan Institute of Technology.,Wuhan,Hubei 430205,China)

机构地区：[1]武汉工程大学环境生态与生物工程学院,湖北武汉430205

出　　处：《棉花科学》2020年第4期40-44,共5页Cotton Sciences

基　　金：武汉工程大学研究生创新基金项目(CX2019204)。

摘　　要：采用菌落直径法,测定了12种新型苯并咪唑类化合物对棉花枯萎病菌的抑菌活性。结果表明:在测定浓度为200μg/mL的情况下,12种新型苯并咪唑类化合物对棉花枯萎病菌的抑菌率达32.5%~89.45%。其中,化合物N-(3-甲基苄基)-1H-苯并咪唑、N-(3-氯苄基)-1H-苯并咪唑、N-(3-溴苄基)-1H-苯并咪唑对棉花枯萎病菌的抑菌率较高,分别为80.1%、89.45%、80.3%,它们对棉花枯萎病菌的EC50值分别为66.1μg/mL、38.1μg/mL、86.3μg/mL,具有良好的抑菌活性;其他9种化合物抑菌活性均低于80%。The inhibiting activity of twelve kinds of novel benzimidazole derivatives against Fusarium oxysporum was investigated by method of colony diameter.The results showed that the inhibition rate of 12 benzimidazoles to Fusarium oxysporum was 32.5%~89.45%in the concentration of 200μg/mL.Among them,N-(3-methylbenzyl)-1H-benzimidazole,N-(3-chlorobenzyl)-1H-benzimidazole,N-(3-bromobenzyl)-1H-benzimi-dazoe had higher inhibiting activity rates against Fusarium oxysporum(80.1%,89.45%and 80.3%,respectively).The EC50 values of them against Fusarium oxysporum were 66.1μg/mL,38.1μg/mL and 86.3μg/mL,respectively,showing good inhibiting activity.The inhibiting activity of the other 9 compounds was lower than 80%.

关 键 词：苯并咪唑 棉花 枯萎病菌 毒力测定 

分 类 号：S481.9[农业科学—农药学]