Hg对小麦种子萌发及幼苗生长的影响研究  

Effect of Soaking of Hg^(2+) on Wheat During its Germination and Seedling Growth

作　　者：靳萍[1] 马剑敏[1] 杨柯金[1] 张改娜[1] 王琳[1] 

机构地区：[1]河南师范大学生命科学学院,河南新乡453002

出　　处：《河南师范大学学报（自然科学版）》2002年第4期81-84,共4页Journal of Henan Normal University(Natural Science Edition)

摘　　要：本文用水培法研究Hg2 + 浸种对小麦种子萌发及幼苗生长情况的影响 ,结果显示 :种子萌发率、平均株高、日均增重、平均根长、叶子的叶绿素含量和可溶性蛋白含量随Hg2 + 浓度升高而呈下降趋势 ,但在低浓度时 (Hg2 +≤ 2 0mg/L)各指标的下降不明显 ,对小麦萌发及生长无明显抑制 ,种子萌发率还略有上升 ;叶子的SOD和POD活性变化趋势为随Hg2 +The experiment are carried out with water cultivation to study the effect of soaking of Hg 2+ on wheat during its germination and seedling growth. The results show that the rates of germination ,the average height of seedling , the average added weight per day and the average root length, the concentration of dissolved protein, the concentration of chlorophyll were getting down with the Hg 2+ concentration raising. But under the lower Hg 2+ concentration(≤20 mg/L)the indexes what mentioned above were not obviously dropping ,and the rates of germination were up a little. The activity of POD and SOD were up with the Hg 2+ concentration raising, but at Hg 2+ ≥50 mg/L the activity of POD began to drop, at Hg 2+ ≥70 mg/L the activity of SOD began to drop.

关 键 词：HG 小麦 种子萌发 幼苗生长 POD SOD 汞 水培法 萌发率 平均株高 日均增重 环境污染 

分 类 号：X503.231[环境科学与工程—环境工程]