玉米素对高羊茅和多年生黑麦草抗旱性影响的研究  

Effect of zeatin on drought resistance of tall fescue and perennial ryegrass

作　　者：李林洁[1] 郭蔚尔 常智慧[1] 

机构地区：[1]北京林业大学草坪研究所,北京100083

出　　处：《草原与草坪》2017年第1期61-66,共6页Grassland and Turf

基　　金：北京林业大学大学生科研训练计划项目(X201410022006)资助

摘　　要：为研究干旱胁迫下玉米素对高羊茅(Festuca arundinacea)和多年生黑麦草(Lolium perenne)抗旱性的影响,试验在土壤含水量分别为90%、60%、40%、25%的干旱胁迫和土壤含水量始终为90%的充分浇水条件下,设4个玉米素浓度处理(0,10,50,100μmol/L),测定了两种草坪草的坪观质量、叶片相对含水量、叶片萎焉、电导率、脯氨酸、丙二醛(MDA)和地下生物量等指标变化。结果表明:与不施加玉米素处理相比,干旱胁迫下,施加玉米素能显著提高两种草坪草的草坪质量和相对含水量(P<0.05),减轻草坪草叶片细胞电解质渗漏和萎蔫度(P<0.05),降低脯氨酸和丙二醛(MDA)含量(P<0.05),提高高羊茅和多年生黑麦草抗旱性。在干旱胁迫后期,高浓度玉米素处理(50μmol/L或100μmol/L)的高羊茅和多年生黑麦草各项指标均表现出更加显著的优势(P<0.05),表明高浓度玉米素对草坪草抵御干旱胁迫的作用更大。The effect of zeatin with 4concentrations（0,10,50 and 100μmol/L）on drought resistance of tall fescue and perennial ryegrass under 2drought tress treatments and full watering treatment.The turf appearance,leaf relative water content,leaf wilting,electric conductivity,proline,malondialdehyde and underground biomass were measured.The results showed that zeatin increased the turf quality and leaf relative water content,alleviated the leaf wilting and electric conductivity,and reduced the contents of proline and malondialdehyde of two turfgrasses compared to the controls under the drought stress.During late stress stage,the higher concentration of zeatin（50μmol/L or 100μmol/L）significantly promoted the drought resistant of two turfgrasses.In conclusion,the higher concentration of zeatin performed better on improving the drought resistance of tall fescue and perennial ryegrass.

关 键 词：玉米素 抗旱性 高羊茅 多年生黑麦草 

分 类 号：S688.4[农业科学—观赏园艺] Q945.28[农业科学—园艺学]