CAJ | 학술논문

2011年、2012年从河北省、河南省、安徽省、湖北省、江苏省、山东省、四川省7个省市采集65个？草种群，喷施甲基二磺隆20ga．i．／hm2进行单剂量甄别抗性试验。结果表明：在上述选择压下，23个菵草种群能够存活；甲基二磺隆疑似抗性种群主要分布于安徽省、江苏省，而河北省、河南省、湖北省、山东省、四川省未发现疑似抗性种群；整株测定结果显示，WC11－17、WC12－10、WC12－25种群的抗性指数分别为9．12、40．59、12．91，表明部分种群对甲基二磺隆表现出较高抗性；菵草对甲基二磺隆的抗性有发展趋势，即同一地点翌年采集的种群较上年度采集的种群抗性程度有所增加。
2011년、2012년종하북성、하남성、안휘성、호북성、강소성、산동성、사천성7개성시채집65개？초충군，분시갑기이광륭20ga．i．／hm2진행단제량견별항성시험。결과표명：재상술선택압하，23개망초충군능구존활；갑기이광륭의사항성충군주요분포우안휘성、강소성，이하북성、하남성、호북성、산동성、사천성미발현의사항성충군；정주측정결과현시，WC11－17、WC12－10、WC12－25충군적항성지수분별위9．12、40．59、12．91，표명부분충군대갑기이광륭표현출교고항성；망초대갑기이광륭적항성유발전추세，즉동일지점익년채집적충군교상년도채집적충군항성정도유소증가。
Between 201 1 and 201 2,65 populations of Beckmannia syzigachne (Steud.)Fernald were collected in seven Chinese provinces (Hebei,Henan,Anhui,Hubei,Jiangsu,Shandong,and Sichuan)to determine their possible resistance to mesosulfuron -methyl sprayed at 20 g a.i./hm2 .Twenty -three B.syzigachne populations survived the application of mesosulfuron -methyl.The suspected resistant populations mainly distributed in Anhui and Jiangsu Provinces,whereas there were no suspected resistant populations the provinces of Hebei,Henan,Hubei,Shandong and Sichuan.Whole -plant dose -response experiments determined that resistant populations WC1 1 -1 7,WC1 2 -1 0 and WC1 2 -25 collected in Anhui and Jiangsu Provinces had resistance indexes of 9.1 ,40.6 and 1 2.5 for mesosulfuron -methyl,respectively. Additionally,it appeared that the resistance level of B.syzigachne to mesosulfuron -methyl increased in 201 2 compared to that found in 201 1 among populations collected at the same location.