Journal
AGRICULTURAL SCIENCES IN CHINA
Volume 10, Issue 12, Pages 1914-1922Publisher
ELSEVIER SCI LTD
DOI: 10.1016/S1671-2927(11)60192-2
Keywords
barnyard-grass; Echinochloa crusgalli; quizalofop-p-ethyl; resistance level; metabolism
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Funding
- Ph D Programs Foundation of Ministry of Education of China [20093702110003]
- National Key Technology R&D Program of China [2006BAD08A09]
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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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