| 外源水杨酸对杂交稻幼苗抗白叶枯病的效应 |
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| 引用本文： | 肖用森.外源水杨酸对杂交稻幼苗抗白叶枯病的效应[J].杂交水稻,1998(2). |
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| 作者姓名： | 肖用森 |
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| 作者单位： | 湖南省湘潭师范学院生物系 |
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| 摘 要： | 杂交水稻幼苗感染白叶枯病菌后，其叶片中ＳＯＤ和ＰＯＸ活性明显增强，ＭＤＡ含量和膜透性显著提高。经过一定浓度水杨酸（ＳＡ）浸种或３叶期幼苗根际预处理，ＳＯＤ和ＰＯＸ活性呈增长趋势，而膜脂过氧化作用受到不同程度的抑制。３叶期幼苗施用ＳＡ比浸种处理效果好。感病组合汕优６３的变化幅度大于抗病组合威优６号。可认为ＳＡ对杂交稻幼苗抗白叶枯病有一定效应。
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| 关 键 词： | 杂交水稻 白叶枯病 水杨酸 活性氧 膜脂过氧化 |
Effect of Salicylic Acid (SA) on Resistance to Bacterial Leaf Blight in Hybrid Rice |
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| Xiao Yongsen,Yang Yun.Effect of Salicylic Acid (SA) on Resistance to Bacterial Leaf Blight in Hybrid Rice[J].Hybrid Rice,1998(2). |
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| Authors: | Xiao Yongsen Yang Yun |
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| Abstract: | The results showed that the SOD and POX activity, permeability of plasma membrane and MDA content were markedly increased in the seedling leaves of hybrid rice after inoculation with Xanthomonas campestris pv.oryzae. Response of two combinations of hybrid rice, Shanyou 63 and Weiyou 6 to bacterial leaf blight was different. However, when seeds or seedlings were treated by soaking with salicylic acid (SA), the MDA content and permeability of plasma membrane in seedling leaves were decreased, but the SOD and POX activity were enhanced. Therefore, the exogenous SA may increase resistance in hybrid rice seedlings to Xanthomonas campestris pv.oryzae. |
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| Keywords: | hybrid rice bacterial leaf blight salicylic acid (SA) active oxygen membrane-lipid peroxidation |
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