Abstract Winter annual grass species such as jointed goatgrass ( Aegilops cylindrica Host), downy brome Bromus tectorum L.), and feral rye Secale cereale L.) negatively affect winter wheat Triticum aestivum yields. To generate a novel in‐crop selective herbicide trait for control, mutagenesis was used to multiple lines resistant the acetyl co‐A carboxylase (ACCase) inhibitor quizalofop p‐ethyl ...