A Preliminary Study on the Resistance to Different Fungicides in Phytophthora parasitica var. nicotianae  

烟草黑胫病菌对不同杀菌剂的抗药性初探（英文）

作　　者：杨天沛 付继刚 邹光进 王廷清 唐军 龙友华[2,3] 张继 

机构地区：[1]黔东南州烟草公司,贵州凯里556000 [2]贵州大学农学院,贵州贵阳550025 [3]贵州省烟草品质研究重点实验室,贵州贵阳550025

出　　处：《Agricultural Science & Technology》2015年第3期537-539,共3页农业科学与技术（英文版）

摘　　要：[Objective] This study aimed to investigate the resistance to different fungicides in Phytophthora parasitica var. nicotianae. [Method] Under indoor incubation conditions, the resistance to dimethomorph, metalaxyl-mancozeb, propamocarb and ovraclostrobin.dimethomorph in P. parasitica strain isolated from Zhenyuan County in Qiandongnan State was analyzed with colony growth measurement method. [Result] P. parasitica exhibited different levels of sensitivity to four fungicides. To be specific, P. parasitica exhibited the highest resistance to dimethomorph, and ECho reached 1.19 μg/ml. [Conclusion] In Zhenyuan tobacco-growing area, long-term single use of dimethomorph possesses certain resistance risk in prevention and control of black shank disease.为了解烟草黑胫病菌对不同杀菌剂产生的抗药性,在室内培养条件下,采用菌落生长测定法,对从黔东南州镇远县分离的烟草黑胫病菌进行了抗性测定。结果表明:烟草黑胫病菌对不同杀菌剂均存在不同程度的抗药性,其中对烯酰吗啉的抗药性最强,EC50值为1.19μg/ml。因此,在镇远烟区,长期单一使用烯酰吗啉防治黑胫病存在抗性风险。

关 键 词：Qiandongnan State Phytophthora parasitica var. nicotianae Drug resistance FUNGICIDE 

分 类 号：S435.72[农业科学—农业昆虫与害虫防治]