摘要
[目的]测定我国牛筋草种群对草甘膦的敏感性基线,同时监测了多年使用草甘膦的牛筋草种群的抗性情况。[方法]通过室内整株生测方法确定12个未使用草甘膦的牛筋草种群和9个使用过草甘膦的牛筋草种群对草甘膦的ED50值。[结果]未使用过草甘膦的牛筋草对草甘膦的敏感性基线为(312.15±40.94)g a.i./hm2,多年使用草甘膦的9个牛筋草种群ED50平均值为(301.65±70.75)g a.i./hm2。[结论]试验结果表明在北京、山东和广西等地多年使用草甘膦后,牛筋草种群对该药没有产生抗性。
[Aims] The sensitivity baseline of weed species Eleusine indica and its resistant status to glyphosate were determined in this study. [Methods] Twelve populations from glyphoste-untreated locations were collected and nine populations from glyphosate-treated locations. Their ED50 values were determined by whole plant bioassay method in greenhouse. [Results] The findings from this study showed that the sensitivity baseline was ED50 （312.15±40.94） g a.i./ha. The average ED50 value was （301.65±70.75） g a.i./ha among nine biotypes treated with glyphosate for more than five years. [Conclusions] This result indicated that E. indica was not resistant on glyphosate in Beijng, Shangdong and Guangxi where the herbicide was used for several years.
出处
《农药》
CAS
北大核心
2012年第1期71-72,74,共3页
Agrochemicals
基金
转基因生物新品种培育重大专项--抗草甘膦转基因玉米抗性稳定性及其对杂草群落结构影响的研究(2009ZX0811-021B)
关键词
草甘膦
牛筋草
敏感性
glyphosate
Eleusine indica
sensibility
