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BACKGROUND
Beckmannia syzigachne (Steud.) Fernald has evolved herbicide resistance due to the long‐term sole use of herbicides and has become a dominant weed in wheat fields in the middle and lower reaches of the Yangtze River in China. In addition to the selection pressure imposed by herbicides, pollen‐mediated gene flow (PMGF) has been reported to cause the spread of herbicide resistance between...
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