Duplicate polyphenol oxidase genes on barley chromosome 2H and their functional differentiation in the phenol reaction of spikes and grains

Shin Taketa, Kanako Matsuki, Satoko Amano, Daisuke Saisho, Eiko Himi, Naoki Shitsukawa, Takahisa Yuo, Kazuhiko Noda, Kazuyoshi Takeda