Characterization of a Common Ragweed (Ambrosia artemisiifolia) Population Resistant to ALS- and PPO-Inhibiting Herbicides

  title={Characterization of a Common Ragweed (Ambrosia artemisiifolia) Population Resistant to ALS- and PPO-Inhibiting Herbicides},
  author={Stephanie L. Rousonelos and Ryan M. Lee and Murilo S. Moreira and Mark J. VanGessel and Patrick J. Tranel},
  booktitle={Weed Science},
Abstract A population of common ragweed from Delaware was not controlled in the field by herbicides that inhibit acetolactate synthase (ALS) or protoporphyrinogen oxidase (PPO). Research was conducted to ascertain if this population was resistant to these herbicidal modes of action and, if so, to determine the resistance mechanism(s). Resistance was confirmed by dose-response studies on greenhouse-grown plants with multiple ALS- and PPO-inhibiting herbicides. DNA sequence data revealed that… 
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