草业科学2016，Vol.33Issue(5)：926-934,9.DOI:10.11829/j.issn.1001-0629.2015-0427
多效唑对不同生境多年生黑麦草抗旱性的影响
Effects of paclobutrazol on drought resistance of Lolium perenne ‘Bomber’ under different growing conditions
摘要
Abstract
Lolium perenne cv.‘Bomber’is widely applied as turf grass species in the garden lawn of north Chi-na.In the present study,the physiological characteristics of ‘Bomber’with different concentrations of PP333 treatments under drought stress in both greenhouse and the field were evaluated to provide reference for solving the practical water shortage problems in turfgrass management.The results revealed that the physiological indi-ces of ‘Bomber’leaves after PP333 application had no significant difference under short stress period (10 d), while had significant differences under moderate stress period (20 d)and long stress period (30 d).During drought stress,the leaf relative water content (RWC)declined,whereas the relative conductivity,malondial-dehyde (MDA)content and free proline content increased and super-oxide dismutase (SOD)activity fluctuantly changed.Based on these comprehensive responses of physiological indices,PP333 application with the concentra-tion of 200 mg . L-1 can improve the drought resistance of L.perenne.Under the same degree of drought stress,the seedling damage in the field was far less than those in the greenhouse,which indicated that the actu-al drought tolerance of turfgrass was stronger than the experimental results under the greenhouse drought con-dition.关键词
多效唑/干旱胁迫/多年生黑麦草/抗旱性Key words
paclobutrazol/drought stress/Lolium perenne/plant resistance分类
农业科技引用本文复制引用
王竞红,刘素欣,王非,多多,张秀梅,陈艾,李鹤,王璐瑶..多效唑对不同生境多年生黑麦草抗旱性的影响[J].草业科学,2016,33(5):926-934,9.基金项目
中央高校基本科研业务费专项资金项目(2572014CA27) （2572014CA27）
