Evolved resistance to glyphosate in rigid ryegrass (Lolium rigidum) in Australia
Evolved resistance to glyphosate in rigid ryegrass (Lolium rigidum) in Australia
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DOI：
10.1017/s0043174500091165
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发表时间：
1998-09-01
期刊：
影响因子：
2.5
通讯作者：
Preston, C
中科院分区：
文献类型：
--
作者：
Powles, SB;Lorraine-Colwill, DF;Preston, C
经过15年的成功使用，草甘膦未能控制澳大利亚广泛分布的杂草硬草。在户外进行的盆栽剂量反应实验中，该种群被证明对草甘膦具有抗性，与易感种群相比，表现出7至11倍的抗性。还观察到对禾草灵的一些交叉抗性（约2.5倍）。相似的水平。在施用多效唑、绿磺隆、精吡氟禾草灵、百草枯、稀禾定、西玛津和三唑草酮后，抗性和敏感种群的防治效果均达到90%。草甘膦抗性在一种主要杂草物种中的存在表明需要改变草甘膦的使用模式。
Following 15 yr of successful use, glyphosate failed to control a population of the widespread grass weed rigid ryegrass in Australia. This population proved to be resistant to glyphosate in pot dose-response experiments conducted outdoors, exhibiting 7- to 11-fold resistance when compared to a susceptible population. Some cross-resistance to diclofop-methyl (about 2.5-fold) was also observed. Similar levels. of control of the resistant and susceptible populations were obtained following application of amitrole, chlorsulfuron, fluazifop-P-butyl, paraquat, sethoxydim, simazine, or tralkoxydim. The presence of glyphosate resistance in a major weed species indicates a need for changes in glyphosate use patterns.