Resistance Level and Metabolism of Barnyard-Grass (Echinochloa crusgalli (L.) Beauv.) Populations to Quizalofop-p-ethyl in Heilongjiang Province, China
Zhi-bo HUAN , Hong-jun ZHANG , Zhen HOU , Shao-yi ZHANG , Yang ZHANG , Wei-tang LIU , Ya-ling BI , Jin-xin WANG
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引用次数: 23
Abstract
Eleven barnyardgrass populations were assayed. The highest resistant population was Geqiushan R with RI 125.45 resulted from the seed assay and 87.29 resulted from the whole plant bioassay followed by 853 R with RI 2.79 resulted from the seed assay and 6.04 resulted from the whole plant bioassay. The resistance level of other nine populations was low with RI 1.13-2.61 resulted from the seed assay and 1.48-3.63 resulted from the whole plant bioassay. The activity of an important metabolic enzyme glutathione S-transferases (GSTs) and three protective enzymes (SOD, POD, and CAT) were determined in vivo for Geqiushan R, 853 R, and Wudalianchi R. Compared with the S controls, the activities of POD in Geqiushan R, GSTs in 853 R, and Wudalianchi R were increased.
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