La对Pb伤害大豆幼苗的影响  

EFFECT OF LA ON GLYCINE MAX SEEDLING UNDER PB STRESS

作　　者：周青[1] 黄晓华[1] 黄纲业 张剑华 彭方晴 屠昆岗 

机构地区：[1]苏州铁道师范学院生物学系

出　　处：《应用与环境生物学报》1999年第1期22-25,共4页Chinese Journal of Applied and Environmental Biology

基　　金：铁道部;国家计委二项基金

摘　　要：以盆载法研究了Ｐｂ对大豆幼苗的伤害及Ｌａ对Ｐｂ伤害的生态生理效应．结果显示，１０００ｍｇＬ－１ＰｂＡｃ２能严重抑制大豆幼苗代谢与生长，叶面喷布３０ｍｇＬ－１ＬａＣｌ３１次，能减轻Ｐｂ造成的毒害．实验证明，此与Ｌａ能增加大豆幼苗光合速率，提高叶绿素含量与硝酸还原酶活性，降低细胞质膜透性与体内Ｐｂ含量。Ecophysiological effect of La on Glycine max seedling under Pb stress was studied through pot culture experiment. The results showed that the growth and metabolism of Glycine max seedling were inhibited by 1000 mg/L PbAc 2. When 30 mg/L LaCl 3 was used to spray Glycine max seedling once, the damage effect of Pb was reduced. The experiment proved this effect was related to that La could raise photosynthetic rate, chlorophyll content and activity of nitrate reductase, reduce cell membrane permeability and Pb contents, keep TTC reduction ability of Glycine max seedling.

关 键 词：LA PB 大豆幼苗 Pb伤害 La生态生理效应 

分 类 号：X503.231[环境科学与工程—环境工程]