Seed-bioassay to detect grass weeds resistant to acetyl coenzyme A carboxylase inhibiting herbicides

被引:57
作者
Tal, A [1 ]
Kotoula-Syka, E
Rubin, B
机构
[1] Hebrew Univ Jerusalem, Fac Agr, Dept Field Crops Vegetables & Genet, IL-76100 Rehovot, Israel
[2] Natl Agr Res Fdn, Inst Plant Protect, Salonika, Greece
关键词
ACCase; graminicide; Graminea;
D O I
10.1016/S0261-2194(00)00041-7
中图分类号
S3 [农学(农艺学)];
学科分类号
0901 ;
摘要
A seed-bioassay was developed to identify grass weed populations resistant to acetyl coenzyme A carboxylase (ACCase)-inhibiting herbicides. Lolium rigidum. Phalaris minor and Alopecurus myosuroides resistant to diclofop, fenoxaprop-P and clodinafop, respectively, were tested using seed-bioassay and the results were compared with those obtained from the whole-plant trial and enzyme assay. A close association was found between the results from seed-bioassay and the other methods suggesting that it is a reliable, rapid, simple and cheap method for identifying populations of grass species resistant to ACCase-inhibiting herbicides. Furthermore, the method could detect effectively cross-resistance of grass weeds to other ACCase-inhibiting herbicides. According to the seed-bioassay the discriminating concentrations for R and S biotypes of L,. rigidum, P. minor and A. myosuroides were at 6.0, 8.0 and 0.06 mg/l, for diclofop, fenoxaprop-P and clodinafop, respectively. (C) 2000 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:467 / 472
页数:6
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