稻稗对噁唑酰草胺的非靶标抗药性和对氰氟草酯的交互抗药性  

Non-target Resistance to Metamifop and Cross-Resistance to Cyhalofop-Butyl in Echinochloa phyllopogon (Stapf) Koss.

作　　者：左平春 臧晓霞[1] 陈仕红[1] 纪明山[1] 

机构地区：[1]沈阳农业大学植物保护学院,辽宁沈阳110866

出　　处：《杂草学报》2016年第4期28-32,共5页Journal of Weed Science

基　　金：国家公益性行业(农业)科研专项(编号:201303031);辽宁省水稻产业体系专项资金(编号:辽农科[2013]271号)

摘　　要：为明确稻稗对噁唑酰草胺的非靶标抗药性和对氰氟草酯的交互抗药性水平,通过剂量反应试验测定辽宁新民(R_1)、黑龙江虎林(R_2)和黑龙江哈尔滨(R_3)3个稻稗种群对噁唑酰草胺的非靶标抗药性和对氰氟草酯的交互抗药性水平。结果显示,R_1、R_2、R_3在喷施细胞色素P450抑制剂杀草强后对噁唑酰草胺的抗性指数比分别为1.14、1.71、2.38,表明R_1对噁唑酰草胺的抗药性与非靶标P450的活性无关,R_2和R_3对噁唑酰草胺的抗药性可能是靶标与非靶标的共同作用。3个稻稗种群对氰氟草酯的抗性指数分别为25.73、12.79、10.29,表明3个稻稗种群都对氰氟草酯产生了交互抗药性。Non-target resistance to metamifop and cross-resistance to cyhalofop-butyl in Echinochloa phyllopogon was evaluated dose-response experiments using populations from Xinming in Liaoning Province( R_1),Hulin in Heilongjiang Province( R_2) and Haerbing in Heilongjiang Province( R_3). The resistance index to metamifop of R_1,R_2,R_3 decreased 1. 14,1. 71 and 2. 38 times,respectively after exposure to the cytochrome P450-inhibiting herbicide,amitrole,indicating that resistance of R_2 and R_3to metamifop is associated with the activity of P450 enzymes whereas that of R_1 is not. The resistance index to cyhalofop-butyl of R_1,R_2,R_3 populations was 25. 7,12. 8 and 10. 3,which indicates that all of the three populations had a cross-resistance to cyhalofop-butyl.

关 键 词：稻稗 噁唑酰草胺 氰氟草酯 P450 交互抗药性 

分 类 号：S451[农业科学—植物保护]