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BACKGROUND
Exploring the mechanisms of herbicide resistance in weeds is an important part of designing resistance management strategies and rationalizing herbicide use. Beckmannia syzigachne is one of the most important agricultural weeds in China. Long‐term use of acetyl‐CoA carboxylase (ACCase)‐inhibiting herbicides has led to the evolution of herbicide resistance in B. syzigachne. ACCase‐inhibiting...
Background
Asia minor bluegrass (Polypogon fugax) is one of the main weeds invading Chinese canola fields. The P. fugax resistant population SC‐R, which survived quizalofop‐p‐ethyl at the field‐recommended rate (67.5 g ha−1), was collected from a canola field in Qingsheng County in China. The present study aimed to (1) characterize the SC‐R resistance pattern to acetyl‐CoA carboxylase (ACCase)‐inhibiting...
This study investigates mechanisms of multiple resistance to glyphosate, acetyl-coenzyme A carboxylase (ACCase) and acetolactate synthase (ALS)-inhibiting herbicides in two Lolium rigidum populations from Australia. When treated with glyphosate, susceptible (S) plants accumulated 4- to 6-fold more shikimic acid than resistant (R) plants. The resistant plants did not have the known glyphosate resistance...
Glyphosate is the world’s most widely used herbicide. A potential substitute for glyphosate in some use patterns is the herbicide paraquat. Following many years of successful use, neither glyphosate nor paraquat could control a biotype of the widespread annual ryegrass (Lolium rigidum), and here the world’s first case of multiple resistance to glyphosate and paraquat is confirmed. Dose–response experiments...
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