Genetic architecture of polyphenol oxidase activity in wheat flour by genome‐wide association study

The primary cause of time‐dependent discoloration in wheat ( Triticum aestivum L.)‐based products is polyphenol oxidase (PPO) activity. A comprehensive genetic characterization of PPO activity in wheat could expedite the development of wheat varieties with low PPO activity. To dissect the genetic architecture of PPO activity in wheat flour, a panel of 166 diverse bread wheat cultivars was phenotyped in four different environments and genotyped...