中国生物防治学报2023，Vol.39Issue(6)：1361-1372,12.DOI:10.16409/j.cnki.2095-039x.2022.11.026
玉米田四种禾本科杂草对草甘膦的敏感性测定
Determination of the Sensitivity of Four Maize Field Grassy Weeds to Glyphosate
摘要
Abstract
Four species of grassy weeds,Digitaria sanguinalis,Eleusine indica,Setaria viridis,and Chloris virgata,are the main grassy weeds in the northern maize region and Huang-Huai-Hai maize region in our country affecting maize yield and quality.In our study,the whole plant bioassay was used to determine the sensitivity baseline of these four species of weeds to glyphosate,which may provide support for future weed control in fields planted with transgenic glyphosate-tolerant maize in China.The results showed that GR50 values of 55 populations of D.sanguinalis ranged from 13.36 to 550.28 g a.i./ha,with an average of 120.02 g a.i./ha.The GR50 values of 69 populations of S.viridis ranged from 7.22 to 201.96 g a.i./ha,with an average of 50.45 g a.i./ha.The range of GR50 values in 50 populations of E.indica was 25.19-808.54 g a.i./ha,with an average of 218.78 g a.i./ha.All the GR50 values of D.sanguinalis,E.indica,and S.viridis were below 900 g a.i./ha(the recommended medium dose in the field),indicating that these 3 weed species were sensitive to glyphosate.The GR50 values of 34 populations of C.virgata ranged from 37.79-1309.21 g a.i./ha,with an average of 358.33 g a.i./ha.There was only one population of C.virgata with GR50 value over 900 g a.i./ha,indicating that 97％of C.virgata populations were sensitive to glyphosate and only a few population were tolerant to glyphosate.关键词
草甘膦/禾本科杂草/敏感性Key words
glyphosate/grassy weeds/sensitivity分类
农业科技引用本文复制引用
马振杰,谢家建,李香菊,于惠林..玉米田四种禾本科杂草对草甘膦的敏感性测定[J].中国生物防治学报,2023,39(6):1361-1372,12.基金项目
农业生物育种重大项目(2022ZD04021) （2022ZD04021）
