摘要： 分析了黄瓜不同抗性品种受枯萎病菌侵染后,叶片组织内过氧化物酶(POD)、多酚氧化酶(PPO)、苯丙氨酸解氨酶(PAL)和超氧化物歧化酶(SOD)活性的变化。结果表明,无论是抗病品种还是感病品种,在接种枯萎病菌后,随着接种天数的增加,4种酶活性与对照相比均有一定程度的升高,但抗病品种的酶活性增加幅度高于感病品种。说明这4种酶在黄瓜对枯萎病的抗性机制中起了重要作用。

关键词: 黄瓜, 镰刀菌枯萎病, 过氧化物酶, 多酚氧化酶, 苯丙氨酸解氨酶, 超氧化物歧化酶

Abstract: The dynamic changes in POD, PPO, PAL, SOD in leaves of different cucumber cult ivars were studied afterthey were infected by fusarium oxysporum at seeding stage.The results showed that the enzyme act ivities were raised fo-llowing the days past when they were infected by fusarium oxysporum. but POD, PPO, PAL, SOD enzyme activities of resistantvarieties was higher than the susceptible ones.These reactions illustrate the four enzymes play an important role afterthey were infected by fusarium oxysporum at seeding stage.

Key words: Cucumber, Fusarium oxysporum, POD, PPO, PAL, SOD

中图分类号: 

• S436.421