铬胁迫对黄瓜种子萌发及某些生理生化指标的影响  

Effects of Chromium Stress on the Seed Germination,Physiological and Biochemistry Parameters

作　　者：陈庆华[1] 

机构地区：[1]永城职业学院,河南永城476600

出　　处：《湖北农业科学》2009年第6期1402-1405,共4页Hubei Agricultural Sciences

基　　金：永城市自然科学研究项目(200810306)

摘　　要：探讨了不同浓度铬(Cr6+)胁迫对黄瓜种子萌发、幼苗早期保护酶活性(SOD、POD、CAT)及膜脂过氧化(MDA含量)的影响。结果表明,在不同浓度Cr6+的胁迫下,黄瓜种子的发芽率随Cr6+浓度的增大而减小。黄瓜胚轴中SOD活性随Cr6+胁迫浓度的增加呈先升后降的趋势,而POD、CAT活性呈上升趋势;MDA含量则是持续上升。The effect of different Cr^6＋ concentrations on the seed germination, physiological and biochemistry parameters including SOD, POD, CAT and MDA was discussed. The results showed that, with the concentration of Cr^6＋ increasing, the germination rate of the seed was decreasing gradually, the activity of SOD was first up and then down, the activity of POD, CAT and the content of MDA were increasing continuously in hypocotyls.

关 键 词：铬(Cr6+)胁迫 黄瓜 萌发 生理生化指标 

分 类 号：O614.611[理学—无机化学] Q945.78[理学—化学]