高温胁迫下多效唑对多年生黑麦草耐热性的影响  

Effects of PP_(333) on heat tolerance of Lolium perenne under high temperature stress

作　　者：熊作明[1] 蔡汉[1] 冯文祥 孙桂平 徐强[1] 

机构地区：[1]扬州大学园艺与植物保护学院,江苏扬州225009 [2]江苏省扬州市城市绿化养护管理处,江苏扬州225009

出　　处：《扬州大学学报（农业与生命科学版）》2006年第4期98-100,103,共4页Journal of Yangzhou University：Agricultural and Life Science Edition

基　　金：江苏省科技成果示范项目(BC2006341)

摘　　要：以多年生黑麦草品种美达丽Ⅻ为供试草种,喷施不同剂量的多效唑,研究高温(35℃)胁迫下对多年生黑麦草耐热性的影响。结果表明:喷施多效唑可有效降低多年生黑麦草细胞质膜透性,减少丙二醛含量,增强超氧化物歧化酶、过氧化物酶和过氧化氢酶的活性,从而提高多年生黑麦草抗高温胁迫的能力。以60 mg·m^(-2)剂量的多效唑处理多年生黑麦草,其抗高温胁迫能力最佳。Heat tolerance of Lolium perenne L. Medalist Ⅻ, treated with high temperature （35 ℃） and different content of paclobutrazol, was studied. The results showed that after treatment of paclobutrazol, plasma permeability and malonaldehyde content of L. perenne decreased significantly, and the activity of superoxide dismutase, perocidase and catalase were enhanced greatly. L. perenne＇s heat tolerance could be enhanced when treated with paclobutrazol. Different content of paclobutrazol showed different effect on heat tolerance of L. perenne. Among all the treatments of paclobutrazol, 60 mg · m^-2 is best to enhance heat tolerance of L. perenne.

关 键 词：多年生黑麦草 高温胁迫 多效唑 耐热性 

分 类 号：S666.4[农业科学—果树学] S543.6[农业科学—园艺学]