铅对玉米幼苗影响机制的初步研究  

A PRELIMINARY STUDY ON THE EFFECT OF LEAD ON CORN SEEDLING

作　　者：赵士禹 姚民昌[1] 赵树仁[1] 

机构地区：[1]大连市甘井子区环保局,辽宁师范大学生物系

出　　处：《辽宁师范大学学报（自然科学版）》1994年第3期238-241,共4页Journal of Liaoning Normal University:Natural Science Edition

摘　　要：通过栽培污灌试验，研究了玉米幼苗铅胁迫下的脂质过氧化、膜系统伤害、叶绿素含量的变化关系．试验结果表明：随铅处理强度的增加，过氧化物酶（ＰＯＤ）活性下降，脂质过氧化作用加强，膜透性增加，细胞内的电解质大量外渗，叶绿素含量下降．由此初步地揭示了铅对玉米幼苗危害与自由基代谢平衡的关系．he correlation among lipid peroxidation.destruction of membrane system and chlorophyll a changes during lead stress is sudied with corn seedlings.With the moresing intensity of lead stress,POD activity lowers MDA content in=creased obviously,electrolytes in cells leaked.These results indicate that the damage of membrane system might be as a result of the increase of membranelipid peroxidation.

关 键 词：玉米 脂质过氧化 膜伤害 

分 类 号：S513.01[农业科学—作物学]