期刊论文

中文

现代农药

1671-5284

2024

23

03

17-22

10.3969/j.issn.1671-5284.2024.03.004

本校为第一机构

为明确来自湖南和江西省稻田稗草种群对氰氟草酯的抗性水平和抗性机理，采用整株生物测定法、基因测序、代谢酶抑制剂联用试验进行了研究。结果显示：R1、R2、R3种群对氰氟草酯的抗性指数分别为3.08、2.19、3.83，均为中抗水平；R4种群抗性指数为1.45，为低抗水平。与敏感种群相比，R1种群存在Ile-2041-Val突变，R2种群中存在Ile-2041-Val、Asp-2078-Gly突变，且细胞色素P450酶抑制剂马拉硫磷和谷胱甘肽硫转移酶抑制剂NBD-Cl均能提高R1和R2种群对氰氟草酯的敏感性；R3种群中存在Trp-2027-Arg突变，且NBD-Cl可以提高其对氰氟草酯的敏感性；R4种群中存在Cys-2088-Tyr突变，马拉硫磷和NBD-Cl不能逆...

In order to clarify the resistance level and resistance mechanism to cyhalofop-butyl in Echinochloa crus-galli populations from Hunan and Jiangxi paddy fields,the experimental studies were carried out by whole-plant bioassay,gene sequencing,and metabolic enzyme inhibitor coupled with cyhalofop-butyl.The results showed that R1,R2 and R3 populations displayed medium level resistance to cyhalofop-butyl,with the resistance indexs of 3.08,2.19 and 3.83,respectively.R4 population displayed low level resistance to cyhalofop-butyl,with the resistance index of 1.45.The Ile-2041-Val mutation was present...