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霜疫霉菌侵染对荔枝氧化作用的影响
屈红霞;孙谷畴;蒋跃明
1.中国科学院华南植物研究所;2.中国科学院华南植物研究所 广东广州510650;3.广东广州510650
摘要:
淮枝、桂味和糯米糍 3种荔枝经接种霜疫霉菌后 ,果皮超氧化物歧化酶 (SOD)和过氧化氢酶 (CAT)活性下降 ;而过氧化氢 (H2 O2 )含量升高 ,超氧阴离子自由基 (O2 .)产生速率增加 ,丙二醛 (MDA)积累增多 ,与果实感病指数增加相一致 ,表明霜疫霉菌侵染加速荔枝氧化作用的进程。实验还表明不同荔枝品种对霜疫霉菌抵抗力与其自由基清除能力有关
关键词:  荔枝    霜疫霉菌    氧化作用
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