Polyphenol oxidase ( ppo ) isozyme in 14 samples from 3 populations of lilium regale and 4 samples from 4 populations of l . sargentiae in the minjiang river valley was tested by polyacrylamide gel electrophoresis ( page ) 摘要应用聚丙烯酰胺凝胶垂直平板电泳技术,对岷江流域王百合3个采样点的14个样品和通江百合4个采样点的4个样品的多酚氧化酶( ppo )同功酶进行了研究。