山西省番茄早疫病菌对腈菌唑的抗药性监测  

The Resistance Monitoring of Tomato Alternaria solani to Myclobutanil

作　　者：史晓晶[1] 韩巨才[2] 

机构地区：[1]忻州师范学院生物系,山西忻州034000 [2]山西农业大学农学院,山西太谷030801

出　　处：《山西农业大学学报（自然科学版）》2012年第5期429-432,共4页Journal of Shanxi Agricultural University(Natural Science Edition)

基　　金：山西省留学基金项目资助基金(2011-052);山西省攻关项目(20110311013-1)

摘　　要：为了解山西省番茄早疫病菌的抗药性水平及抗性菌株分布情况,对其进行了抗药性监测,以便合理用药。从五寨县分离出的15株菌对腈菌唑的平均EC50值为0.52mg.L-1,最低抑制浓度为5.0mg.L-1,以此作为番茄早疫病菌对腈菌唑的相对敏感基线。所有菌株中有56.52%敏感菌株,40.87%低抗菌株和2.61%中抗菌株,表明低抗菌株和敏感菌株是山西省内的优势菌株,中抗菌株还未形成规模,因此可判定山西省番茄早疫病菌还未对腈菌唑产生严重的抗药性。In order to estimate the drug resistance level and the distribution of resistant isolates of Alternaria solani Sor- auer in Shanxi province, the drug resistance was monitored or the rational use of drugs. Fifteen sensitive A. solani iso- lates from Wuzhai county in Shanxi province were tested. The results showed that the mean of EC50 was 0.52 mg L-l and the minimum inhibitory concentration was 5.0 mg L-1. The mean of ECs0 was taken as the relative sensitive baseline of A. solani to myclobutanil. According to the EC50, the sensitive isolates from Datong, Changzhi, Qixian and Yuncheng were also tested. There were 56.52% sensitive isolates, 40.87% low resistant isolates and 2.61 % middle resistant isolates in all. Sensitive and low resistant isolates were predominant isolates. Middle resistant isolates were detected but there were only three isolates. The results showed that the resistance of A. solani to myclobutanil in Shanxi province has not developed severely.

关 键 词：番茄早疫病菌 腈菌唑 抗药性 抗性水平 

分 类 号：S481.4[农业科学—农药学]