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期 刊 ：植物保护学报 1999年

关键词：持续低温；稻瘟病；水稻；抗病性；免疫；

Keywords:low temperature, rice blast, peroxidase and phenylalanine ammonia lyase activities, total phenol,

摘 要 ：研究了在持续低温作用下，具有不同抗性的品种汕优多系１号和汕优６３对稻瘟病菌的抗性变化。结果表明：（１）持续低温处理比未经处理的对照稻瘟病病斑要早出现２－３ｄ；低温处理３－５ｄ出现病斑数目最多，对病害发生最为有利；但处理时间过长，则不利于病害；（２）持续低温处理３－５ｄ对病斑扩展的影响显著。

Abstract:Two rice cultivars, Shanyou duoxi 1, resistant, and Shanyou 63, susceptible to rice blast were used to analyze the variation of the resistance to Pyricularia grisea under low temperatures, <20 C that is. The results showed that lesion appeared two or thre

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