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作 者 ：张荣平 王振镒

期 刊 ：西北植物学报 1994年 3期

关键词：光；膜脂过氧化；脂氧合酶；小麦；

Keywords:Light, young wheat leaves, LOX, Lipid-peroxidation, photo inhibition, photo pro-tection,

摘 要 ：选用抗旱型小麦品种陕合６号和水分敏感型小麦品种郑引１号的黄化幼苗为材料，研究了光处理对小麦幼叶脂氧合酶活性和膜脂氧化作用的影响。结果表明：光处理后黄叶变绿，叶片中的ＬＯＸ活性降低，丙二醛含量和叶绿素含量增加，膜透性升高，ＩＵＦＡ升高。ＬＯＸ活性与光抑制过程的恢复，光保护过程及膜脂过氧化作用有关。光诱导产生的膜脂过氧化作用是一种“准膜脂过氧化作用”。

Abstract:Light was used to treat the etiolated younng wheat seedlings. The results showed that afterthe treatment of Light,the etiolated leaf turned to green,the LOX activity in it decreased dramat-ically,meamwhile,the MDA content. chlorophyll content and the me

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