期刊论文

中文

植物保护

0529-1542

2015

41

2

58-63

10.3969/j.issn.0529-1542.2015.02.010

公益性行业（农业）科研专项（201303031） 湖南省自然科学基金项目（14JJ3096）

本校为第一机构

采用整株法测定了湖南省部分地区棉田牛筋草(Eleusine indica)对精喹禾灵的抗性水平,还测定了精喹禾灵对牛筋草抗(R)、感(S)种群体内GSTs及SOD、POD、CAT影响的差异。整株法测定结果显示,相对于敏感的南县种群,其他地区棉田牛筋草对精喹禾灵的抗性指数在1.6~9.7之间,其中湘阴种群最高为9.7,澧县种群最低为1.6;精喹禾灵处理2d后,R种群GSTs活性急剧上升,在第3天达到最高,随后急剧下降,5d之后趋于平缓。S种群GSTs活性在施药后先上升后下降。药剂处理后,R种群的SOD和POD活性在中期显著低于S种群,R、S种群的CAT活性在药后第9天有明显差异。结果表明,R种群对精喹禾灵产生抗性的原因可能是GSTs对精喹禾...

In order to evaluate the resistance of Eleusine indica populations to quizalofop-P-ethyl,whole-plant bioassay was carried out and the differences in GSTs,SOD,POD and CAT of the resistant（R）and susceptible（S）populations to quizalofop-P-ethyl were preliminarily compared.The results of whole-plant bioassay showed that the populations of E.indica had different levels of resistance to quizalofop-P-ethyl,and the highest resistance index（RI）was 9.7,which was found in Xiangyin County.The activity of R population increased immediately,with a peak ...