polyphenol oxidase(PPO) , catalase(CAT) and the content of phenolic compound in the leaves of 3 cucumber cultivars with different resistance to Sphaerotheca fuliginea after inoculation were studied .

• 结果表明:黄瓜对白粉病的抗性与植株组织中的过氧化物酶、多酚氧化酶、过氧化氢酶活性以及酚类物质含量密切相关。