摘要
为了解烟草黑胫病菌对甲霜灵产生的抗药性,采用菌落生长测定法,对从贵州省毕节地区5个县分离的9株烟草黑胫病菌进行了抗性测定。结果表明:烟草黑胫病菌菌丝生长对甲霜灵均存在不同程度的敏感性,EC50值平均为0.7 158μg/mL,其中,CGch-2的耐药性最强,EC50值为1.225 3μg/mL。毕节地区的烟草黑胫病菌已经对甲霜灵产生了抗性。
The drug resistance of metalaxyl to nine tobacco black shank strains isolated from five counties in Bijie prefecture was determined by colonial growth rate method.The results showed that the mycelium growth of tobacco black shank was sensitive to metalaxyl to varying degrees,the mean EC50 value of metalaxyl to nine tobacco black shank strains was 0.715 8 μg/mL,the EC50 value of metalaxyl to CGch-2 strain reached 1.225 3 μg/mL,which indicates that tobacco black shank pathogenic fungus is of drug resistance to metalaxyl.
出处
《贵州农业科学》
CAS
北大核心
2011年第4期90-92,共3页
Guizhou Agricultural Sciences
基金
铜仁地区烟草公司项目"武陵山区特色优质烟叶研究与开发"[贵铜烟(2009)10]
关键词
烟草黑胫病菌
甲霜灵
抗药性
tobacco black shank
metalaxyl
drug resistance
