ACC1 mutations in wheat for quizalofop-p-ethyl resistance: An expansion and their incorporation into Chinese breeding lines

Key Points

• The aim is to investigate how ACC1 mutations contribute to herbicide resistance in wheat and their potential for breeding.
• Identified the G2084S substitution in ACC1 gene related to herbicide sensitivity.
• Studied the effect of stacking the G2084S allele across different subgenomes of wheat.
• Assessed the efficacy of low-dose quizalofop-p-ethyl on weed control without impacting yield.
• The G2084S substitution significantly increased resistance to quizalofop-p-ethyl.
• Stacking the G2084S allele across subgenomes resulted in enhanced resistance compared to non-mutated lines.
• A low dose of quizalofop-p-ethyl effectively controlled weeds without reducing wheat yield.