高浓度Mn^2＋、Cu^2＋或Zn^2＋营养液对冷胁迫．黄瓜幼苗叶片SOD活性的影响  

Effects of High Concentrations of Cu^(2+),Zn^(2+) and Mn^(2+) in Nutrient Solution on SOD Activity in Cucumber Seedling Leaves under Chilling Stress

作　　者：李涛[1,2] 高俊杰[3] 于贤昌[1] 

机构地区：[1]山东农业大学园艺科学与工程学院／作物生物学国家重点实验室,山东泰安271018 [2]烟台市农业科学研究院,山东烟台265500 [3]泰安市农业局,山东泰安271000

出　　处：《西北农业学报》2009年第3期192-195,共4页Acta Agriculturae Boreali-occidentalis Sinica

基　　金：国家自然科学基金资助(30571271);山东省自然科学基金(Y2005D05)资助

摘　　要：以黄瓜幼苗为试材,研究了冷胁迫下高浓度Mn2+、Cu2+或Zn2+营养液对黄瓜幼苗叶片Mn、Cu和Zn含量、SOD及其同工酶活性、电解质渗漏率的影响。结果表明:低温胁迫下,分别单独提高营养液Mn2+、Cu2+或Zn2+浓度均可使黄瓜幼苗叶片SOD活性增加,电解质渗漏率减小,其中Mn2+的作用最大,Cu2+次之,Zn2+最小。The effects of Mn, Cu, Zn on SOD activity and cold tolerance of cucumber leaves through increasing the concentrations of Cu^2＋, Zn^2＋ or Mn^2＋ respectively in nutrient solutions on cucumber seedlings were investigated.. The results indicated that increasing the concentrations of Mn^2＋ , Cu^2＋ or Zn^2＋ in nutrient solutions respectively could enhance the SOD activity and reduce the electrolytic leak- age in cucumber seedling leaves, in the sequence of their functions was Mn^2＋〉Cu^2＋〉Zn^2＋.

关 键 词：黄瓜 微量元素 冷胁迫 SOD 电解质渗漏率 

分 类 号：S642.2[农业科学—蔬菜学]