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中国农学通报

中国农学通报 ›› 2009, Vol. 25 ›› Issue (16): 206-209.

所属专题： 生物技术； 园艺； 农业生态

• 植物保护 农药 • 上一篇    下一篇

甜瓜白粉病抗性反应中相关防御酶活性的变化

赵光伟,徐永阳,徐志红,张 健,孔维虎   

  • 收稿日期:2009-02-26 修回日期:2009-05-12 出版日期:2009-08-20 发布日期:2009-08-20

Changes of Related Defense Enzyme Activity in Resistance to Melon Powdery Mildew

Zhao Guangwei, Xu Yongyang, Xu Zhihong, Zhang Jian, Kong Weihu   

  • Received:2009-02-26 Revised:2009-05-12 Online:2009-08-20 Published:2009-08-20

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814

摘要： 在人工接种条件下，通过测定接种后过氧化物酶（POD）、过氧化氢酶（CAT）、多酚氧化酶（PPO）的活性，研究了甜瓜白粉病抗性反应中相关防御酶活性变化。结果表明，抗、感品种对照的POD、CAT、PPO酶活性无明显差异。接种后，它们的3种酶活性都比对照提高；抗性品种CAT活性高于感病品种；感病品种POD活性高于抗性品种；抗病品种PPO活性直到接种后5d才超过感病品种，并呈上升趋势。

关键词: 不同磷效率, 不同磷效率, 玉米基因型, 相对生物学指数, 相对生理特性

Abstract: The changes of related defense enzyme activity in the resistant reaction to melon powdery mildew were studied through determined the activity of POD, CAT, PPO after artificial inoculation. The results showed that activity of POD, CAT, PPO had no obvious difference between resitant and susceptible control.The three kind of enzyme activity all increased compared with their control after inoculation. CAT activity of resistant variety was higher than susceptible variety. POD activity is opposite. PPO activity of resistant variety was higher than susceptible variety until five days after inoculation.