活性氧损伤对园林植物幼苗叶绿素的降解效应  

Degradation effects of active oxygen damage on garden plant seedling chlorophyll

作　　者：张杰[1] 李运生[1] 

机构地区：[1]河南工程学院,河南郑州451191

出　　处：《中南林业科技大学学报》2012年第9期73-77,共5页Journal of Central South University of Forestry & Technology

基　　金：河南省教育厅重点项目(12B220001);河南省教育厅项目(2011B220001)

摘　　要：以抗旱性较弱的河南海棠和抗旱性较强的山荆子的种子为试验材料,用20%聚乙二醇(PEG-6000)溶液模拟水分胁迫处理,探讨了水分胁迫下活性氧损伤对苹果幼苗叶绿素降解的效应。结果显示:(1)在水分胁迫下,O2-.、H2O2、MDA、PMP含量均随着处理时间的延长,呈现不同程度的提高。(2)水分胁迫下,对O2-.、H2O2、MDA、PMP的响应幅度为,河南海棠>山荆子。(3)O2-.、H2O2、MDA、PMP与叶绿素含量间均呈显著负相关。(4)水分胁迫下,两种试材幼苗叶绿素含量降低,与活性氧损伤密切相关。With the weak drought resistance Malus honanensis and strong drought resistance Malus baccata seeds as the test materials,using 20% polyethylene glycol（PEG-6000） solution to simulate water stress treatment,the degradation effects of active oxygen damage active oxygen damage on garden plant seedling chlorophyll have been studied.The results show that（1） under water stress,O2-·,H2O2,MDA,PMP content increased in varying degrees as the duration of treatment prolonged;（2） under water stress,the response amplitude of Henan begonia to O2-·,H2O2,MDA,PMP were larger than Malus baccata;（3） there were significant negative correlation between O2-·,H2O2,MDA,PMP and chlorophyll contents;（4） under water stress,the decrease of two kinds of test materials chlorophyll content was closely related to the active oxygen damage.

关 键 词：园林植物 水分胁迫 活性氧 叶绿素降解 

分 类 号：S718.43[农业科学—林学]