PP_(333)对夏季草地早熟禾形态特征及生理特性的影响  

Effects of paclobutrazol on morphological and physiological characteristics of Kentucky Bluegrass in summer

作　　者：熊作明[1] 孙桂平 金飚[1] 周建东[1] 徐强[1] 

机构地区：[1]扬州大学农学院,江苏扬州225009 [2]扬州市城市绿化养护管理处,江苏扬州225009

出　　处：《江苏林业科技》2007年第1期19-22,共4页Journal of Jiangsu Forestry Science & Technology

基　　金：江苏省科技成果示范项目"草本植物容器育苗及配套栽培技术"(BC2006341)

摘　　要：用60 mg/m2PP333处理,能有效地抑制草地早熟禾的植株高度,促进分蘖,提高根冠比,减轻夏季高温后的枯黄程度;降低质膜差别透性(PMP),显著提高叶绿素、蛋白质含量和叶片相对含水量(RWC),并能增强草地早熟禾抗夏季高温胁迫的能力,改善坪用性状,是安全越夏的有效措施。The effect of paclobutrazol（ PP333 ）on some morphological and physiological characteristics of Kentucky Bluegrass （Poa pratensis L. ） was investigated in summer. Results showed that 60 mg/m^3 PP333 treatment reduced the grass height,increased the tiller number and the ratio of root/canopy, and alleviated the degree of scorch under heat stress. Furthermore, PP333 treatment also induced a significant decline of plasma-membrane permeability（PMP） and increased the content of chlorophyll and soluble proteins,and the relative water content （RWC） of Kentucky Bluegrass leaves in summer. The data above indicated that 60 mg/m^3 PP333 treatment is a good choice to enhance heat-tolerance and then improve turf quality and over-summering safety of Kentucky Bluegrass.

关 键 词：PP333 草地早熟禾 形态特征 生理特性 

分 类 号：S812.3[农业科学—草业科学]