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稻白叶枯病系统获得性抗性与非诱导部位活性氧及其清除系统的关系 被引量:1

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摘要 试验选用水稻品种湘早籼3号(湘3,抗病品种)和浙辐802(浙8,感病品种)为材料,至6叶期,分别用稻白叶枯病菌的弱毒株(75-1)和强毒株(76-25)在第5叶剪叶接种诱导;测定接种后12、24、48、72h第6叶的SOD活性、POD活性、MDA含量及超氧阴离子产生速率的动态变化;并于第6d在第6叶挑战接种76-25,挑战接种后15d测量病班长度。结果表明,2诱导因子均诱导2品种产生了系统获得性抗性(SAR),诱导效果浙8好于湘3,76-25好于75-1。诱导处理后,2品种上位叶中SOD活性及O·2产生速率有所降低,POD活性升高,MDA含量变化不明显,这些变化从诱导后24人开始,48h~72h的变化更大。
出处 《湘潭师范学院学报(社会科学版)》 1999年第3期91-95,共5页 Journal of Xiangtan Normal University(Social Science Edition)
基金 湖南省教委资助
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