我国主要水稻产区稻田稗草对氰氟草酯和噁唑酰草胺的抗性初步测定  

Preliminary determination of the resistance of Echinochloa spp.to cyhalofop-butyl and metamifop in main paddy fields in China

作　　者：孙腾 梅桂龙 张建萍[2] 孙进军 彭立存 沈晓霞 赵运 段桂芳 SUN Teng;MEI Guilong;ZHANG Jianping;SUN Jinjun;PENG Licun;SHEN Xiaoxia;ZHAO Yun;DUAN Guifang(GreenTech Laboratory,Shanghai 201612,China;State Key Laboratory of Rice Biological Breeding Biology,China Rice Research Institute,Hangzhou 310006,China;CAC Shanghai International Trading Co.,Ltd,Shanghai 200335,China)

机构地区：[1]上海晓明检测技术服务有限公司,上海201612 [2]中国水稻研究所水稻生物育种全国重点实验室,杭州310006 [3]上海泰禾国际贸易有限公司,上海200335

出　　处：《世界农药》2023年第10期50-56,共7页World Pesticide

摘　　要：明确上海、浙江、江苏、安徽、湖北、湖南、江西、黑龙江8个省市采集的56个稻田稗草种群对氰氟草酯和噁唑酰草胺的抗性情况。采用室内整株生物测定法,于稗草3~4叶期茎叶喷雾处理,氰氟草酯在150、600 g a.i./hm^(2)剂量下,噁唑酰草胺在105、420 g a.i./hm^(2)剂量下测定56个稗草种群对氰氟草酯和唑酰草胺的敏感性;选择2个相对敏感种群及在低剂量下防效低于60%的疑似抗性种群进行抗性水平测定。56个稗草种群中有5个(8.93%)种群对氰氟草酯敏感、26个(46.43%)种群对噁唑酰草胺敏感;有51个(91.07%)种群对氰氟草酯有抗性、30个(53.57%)种群对噁唑酰草胺有抗性。对氰氟草酯敏感的5个稗草种群对唑酰草胺也敏感,对噁唑酰草胺有抗性的30个稗草种群对氰氟草酯也有抗性。采自上海、浙江、江苏、安徽、湖北、湖南、江西、黑龙江水稻田稗草种群对氰氟草酯已产生不同程度抗性,对噁唑酰草胺的抗性频率低于氰氟草酯,部分稗草种群对氰氟草酯和噁唑酰草胺有交互抗性。To ditermine the resistance level of 56 populations of Echinoloa spp.in our laboratory,which were collected from paddy fields in eight provinces and cities including Shanghai,Zhejiang,Jiangsu,Anhui,Hubei,Hunan,Jiangxi and Heilongjiang,to cyhalofop-butyl and metamifop.The sensitivity of 56 barnyardgrass populations to cyhalofop-butyl and metamifop was determined by an indoor whole-plant bioassay by directive stem foliar spraying at 3-4 leaf stage of barnyardgrass at doses of 150 and 600 g a.i./ha of cyhalofop-butyl and 105 and 420 g a.i./ha of metamifop;two relatively sensitive populations and the suspected resistant populations that had a control effect of less than 60%at the low dose were selected for the resistance level testing.Among 56 barnyardgrass populations,5(8.93%)were sensitive to cyhalofop-butyl and 26(46.43%)were sensitive to metamifop;51(91.07%)were resistant to cyhalofop-butyl and 30(53.57%)were resistant to metamifop.The 5 populations sensitive to cyhalofop-butyl were also sensitive to metamifop,and the 30populations resistant to metamifop were also resistant to cyhalofop-butyl.[Conclusions]The barnyardgrass populations collected from rice fields in Shanghai,Zhejiang,Jiangsu,Anhui,Hubei,Hunan,Jiangxi and Heilongjiang had developed different degrees of resistance to cyhalofop-butyl.The resistant frequency of barnyardgrass populations to metamifop was lower than that to cyhalofop-butyl,and some barnyardgrass populations had cross-resistance to cyhalofop-butyl and metamifop.

关 键 词：稻田稗草 氰氟草酯 噁唑酰草胺 抗性 

分 类 号：TQ457[化学工程—农药化工]