Pb^(2+)对蚕豆幼苗生长的影响  

Effect of Pb^(2+)on the Growth of Broad Bean Seedlings

作　　者：李三相[1] 李勃[1] 王弋博[1] 王燕芳[1] 

机构地区：[1]天水师范学院生命科学与化学学院,甘肃天水741001

出　　处：《天水师范学院学报》2011年第5期46-49,共4页Journal of Tianshui Normal University

基　　金：甘肃省自然基金(3ZS051-A25-026)"陆生蓝藻地木耳提取物对花卉的生物促长作用及相关研究"阶段性成果

摘　　要：采用沙培法,研究了不同浓度(0mg/L,10mg/L,30mg/L,50mg/L,80mg/l)的乙酸铅对蚕豆幼苗生理指标的影响.结果表明,一定浓度的乙酸铅对蚕豆幼苗的生长具有促进作用,浓度为10mg/L的乙酸铅是蚕豆幼苗生长的最适浓度,与对照相比较,该浓度使得蚕豆幼苗的叶绿素含量增加了,保护酶系统中过氧化物酶(POD)活性升高了,但随着浓度的增大,膜相对透性、Pro含量、膜脂过氧化产物丙二醛(MDA)含量升高了,说明高浓度破坏了细胞膜的完整性,增加了膜的透性.Effects of the different concertration(CH_3COO)_2Pb(0mg/L,10mg/L,30mg/L,50mg/L,80mg/l) on main physiological indexes of broads bean seedlings were studied by the pot sand culturing.The results showed that certain concentration of(CH_3COO)_2Pb could promote the growth of the broad bean seedings and the optimum concentration of (CH_3COO)_2Pb was lOmg/L.Compared with the control sample,the chlorophyll content of broad bean seedlings increased and the peroxidase enzyme(POD) activity rised.However,the membrane permeability,the Pro content and the malondialdehyde(MDA) content of membrane lipid peroxidation increased respectively,which indicated that high lead density destroyed the integrality of cell membrane and improved cytomembrane penetrability.

关 键 词：蚕豆幼苗 乙酸铅 生长 

分 类 号：S643[农业科学—蔬菜学]