喷施水杨酸对2种草坪草抗盐性的影响  

Effect of Spraying Salicylic Acid on Salt Resistance in Two Kinds of Turf Grasses

作　　者：杜红豆[1] 付丽娟[1] 孟雪娇[1] 池春玉[1] 丁国华[1] 

机构地区：[1]哈尔滨师范大学生命科学与生物技术学院,哈尔滨150025

出　　处：《中国农学通报》2011年第10期157-160,共4页Chinese Agricultural Science Bulletin

基　　金：黑龙江省自然基金项目资助(C200844);黑龙江省教育厅科研项目(10555032)

摘　　要：本研究以紫羊茅和黑麦草为试材,研究喷施100、200和300mg/L3种浓度外源水杨酸(SA)后紫羊茅和黑麦草在1%盐胁迫下的细胞膜透性、脯氨酸含量、可溶性糖含量、丙二醛含量的变化以及超氧化物歧化酶、过氧化物酶和过氧化氢酶活性的变化。结果表明,喷施SA能够提高2种草坪草的脯氨酸含量和可溶性糖的含量,降低2种草坪草的电解质渗透率,降低细胞丙二醛含量,提高细胞SOD、POD、CAT的抗氧化酶活性,因此喷施SA能够提高草坪草抗盐性。最佳有效的SA处理浓度为200mg/L。In this study,red fescue（Festuca rubra L.）and ryegrass（Lolium perenne L.）were used as materials to study the change of the cell membrane permeability,proline content,MDA content as well as the changes of activities of superoxide dismutase,peroxidase and catalase after the treatment of exogenous SA under the 1% salt stress.The results showed that spraying salicylic acid was able to increase the content of proline and soluble sugar and to reduce the penetration rate of the electrolyte and the MDA content,and enhance the enzyme activity of the SOD,POD,and CAT.The best effective concentration of salicylic acid was 200 mg/L.

关 键 词：水杨酸 盐胁迫 草坪草 黑麦草 紫羊茅 

分 类 号：Q945.78[生物学—植物学]