摘要
为了明确湖南省油菜田菵草对精喹禾灵的抗药性情况，在采集各地油菜田菵草种子的基础上，采用室内生物测定法测定了其对精喹禾灵的抗药性水平，并比较了抗敏种群体内谷胱甘肽-S-转移酶（GST）活力的区别，初步揭示其抗性机理。试验结果表明：采自浏阳永安的菵草种群抗药性水平最高，达到了23.60，处于中等抗性水平；其他地区的菵草种群抗性倍数处于2.48~8.53，处于较低抗性水平。对抗敏菵草种群GST酶活的测定结果表明，抗性菵草种群体内GST的活力要明显高于敏感种群，这可能是其产生抗性的机理之一。
In order to determine resisitance level of Beckmannia syzigachne populations in primary rape planting areas in Hunan Province,bioassay method was employed to determine resistance level of Beckmannia syzigachne to Quizalofop-P,and activity of GST were determined.The results showed that relative resistance ratio of Yongan population was 23.60,indicating medium resistance level.Relative resistance ratio of other populations were between 2.48~8.53,indicating low resistance level.GST activity of resistant Beckmannia syzigachne population was significantly higher than sensitive Beckmannia syzigachne population,indicating it would be possible mechanism of resistance to Quizalofop-P.
出处
《现代农业科技》
2015年第3期122-122,124,共2页
Modern Agricultural Science and Technology
关键词
油菜田
菵草
精喹禾灵
生物测定
抗药性
rape fields
Beckmannia syzigachne
Quizalofop-P
bioassay determine
resistance
