重金属Zn^(2+)胁迫对萝卜种子萌发及幼苗生长和叶绿素合成的影响  

Effects of Zn^(2+) Stress on Radish(Raphanus sativus L.) Seeds Germination,Seedlings Growth and Chlorophyll Content

作　　者：何九军[1] 王瀚[1] 杨小录[1] 

机构地区：[1]陇南师范高等专科学校生物与化学系,陇南甘肃742500

出　　处：《安徽农业科学》2011年第33期20348-20350,共3页Journal of Anhui Agricultural Sciences

基　　金：陇南师范高等专科学校校级重点科研项目(2009LSZK06001)

摘　　要：[目的]研究Zn2+胁迫对萝卜(Raphanus sativus L.)种子萌发及幼苗生长和叶绿素含量的影响,从而更好地认识重金属Zn2+对绿色植物生长发育的胁迫作用。[方法]萝卜种子为宝萝一号。Zn2+浓度梯度为12.5、25.0、50.0、100.0 mg/ml,以去离子水为对照。[结果]Zn2+浓度变化并不影响萝卜种子萌发率,但随着浓度的增加,对萝卜幼苗形态、根长、根毛的产生及叶绿素的含量均有一定程度的抑制作用。[结论]该研究可以为进一步进行土壤修复提供科学依据。[Objective] The research aimed to study the effects of Zn2＋ stress on radish seeds germination,seedling growth and chlorophyll content,to better know the stressing effects of heavy metal Zn2＋ on growth and development of green plant.[Method] The radish seed was Baoluo1hao.Zn2＋ concentration was 12.5,25.0,50.0 and 100.0 mg/ml,respectively.Take deionized water as control.[Result] The results showed that Zn2＋ concentration changes could not affect seeds germination of radish.While with the increasing of it,the morphology,root length,form of root hair and the content of chlorophyll of radish seedlings were inhibited extensively.[Conclusion] The study provides a scientific basis for further carrying out soil remediation.

关 键 词：Zn2+ 萝卜种子 种子萌发 幼苗生长 叶绿素含量 

分 类 号：S631.1[农业科学—蔬菜学]