pH对浮萍生长及其保护酶活性的影响  

Effects of pH on growth and protective enzyme activity of duckweeds

作　　者：黄荣松[1] 陈侠桦 郭利利[1] 苏瑞芳[2] 沈健英[1] 

机构地区：[1]上海交通大学农业与生物学院,上海200240 [2]上海市奉贤区农业技术推广中心,上海201400

出　　处：《上海农业学报》2014年第5期90-94,共5页Acta Agriculturae Shanghai

基　　金：国家科技部项目"农业面源污染防控关键技术研究与示范"(2012BAD15B00)

摘　　要：以上海地区常见的青萍(Lemna minor L.)、少根紫萍(Spirodela oligorrhiza Kurz.)和多根浮萍(Spirodela polyrrhiza L.)为研究对象,在以Hoagland’s E-Medium营养液进行实验室模拟培养的基础上,研究了pH对3种浮萍生长及其保护酶的影响。结果表明:在初始pH为4—11时,3种浮萍均能耐受,最适pH均为4—5;在pH为4—5和10—11时,浮萍体内3种保护酶——过氧化氢酶(CAT)、过氧化物酶(POD)和超氧化歧化酶(SOD)有更高的活性,对浮萍的生长有一定的促进作用。The common duckweeds in Shanghai area（Lemna minor, Spirodela oligorrhiza and Spirodela polyrrhiza）were used as test materials, and their cultural experiments with the Hoagland ;s E- Medium were carried out at different pH levels. The results indicated that all the 3 duckweed species could grow when the initial pH was 4--11 ,and the optimal pH was 4--5;At pH 4--5 or 10--11,the duckweeds＇ 3 protective enzymes--catalase （ CAT）, peroxidase （ POD）, superoxide dismutase （ SOD）- had a higher activity and a certain accelerating effect on duckweed growth.

关 键 词：浮萍 保护酶 生长率 生长特征 PH 

分 类 号：X17[环境科学与工程—环境科学]