重金属污染对2种蔬菜种子萌发和总抗氧化活性的影响  

Effect of Zn^(2+),Cr^(2+) on Germination and Antioxidant Activity of Two Kinds of Vegetables Seeds

作　　者：高雪峰[1] 王铁娟[1] 

机构地区：[1]内蒙古师范大学生命科学与技术学院,呼和浩特010022

出　　处：《种子》2013年第2期32-35,共4页Seed

基　　金：内蒙古自然科学基金项目(编号:2011 MS 0524)资助

摘　　要：研究了不同浓度的重金属Zn2+、Cr6+对甘蓝、邢壮80天菜花2种种子的发芽势、发芽率和总抗氧化活性的影响。结果表明,Zn2+、Cr6+对菜花和甘蓝种子的萌发均有抑制作用,随着Zn2+、Cr6+浓度的增加,对菜花种子萌发的抑制作用也逐渐增加;且Cr6+的毒性较Zn2+大。不同浓度的Zn2+、Cr6+均使萌芽后甘蓝的幼芽的抗氧化活性降低,且浓度越大,降低程度也越大。而Cr6+为50 mg/L时,对菜花种子的抗氧化活性有一定的促进作用;达200 mg/L浓度时对菜花种子的抗氧化活性有抑制作用,且随浓度的增加,抑制作用越来越明显。In this paper, two kinds of vegetables seeds were used as experimental material to study the effects of different concentrations of Zn2^＋and Cr6^＋ on the germination rate, germination vigor, antioxidant activity of them. The results showed that Zn2^＋ and Cr6^＋on cauliflower cabbage seed germination was inhibited,with the increase of Zn2^＋ , Cr6^＋ concentration, the cauliflower seed germination inhibition had also gradually increased ; and the toxicity of Cr6^＋ was higher than Zn2^＋. Different concentrations of Zn2^＋ and Cr6^＋ made after budding cabbage sprouts antioxidant activity decreased,and more concentration,reduced the greater the degree. While Cr6^＋ is 50 mg/L,the cauliflower seed antioxidant activity had a certain role in promoting;up to 200 mg/L concentrations on cauliflower seed antioxidant activity was inhibited, and with the increase of concentration, inhibition effect was more and more obviously.

关 键 词：蔬菜种子 重金属 萌发 抗氧化活性 

分 类 号：Q945.78[生物学—植物学]