不同LED光质对两种冷季型草坪草生长及生理特性的影响  

Effect of different ratio of red and blue light emitting diodes on growth and physiological characteristics of two cool-season turfgrass

作　　者：陈地杰 韩烈保[1] 宋桂龙[1] 陈雨峰[1] CHEN Dijie;HAN Liebao;SONG Guilong;CHEN Yufeng(Turfgrass Research Institute,Beijing Forestry University,Beijing 100083,China)

机构地区：[1]北京林业大学草坪研究所

出　　处：《草业科学》2019年第11期2831-2837,共7页Pratacultural Science

基　　金：天然草坪足球场场地养护与管理技术规范(20181086)

摘　　要：为了解决运动场草坪遮阴问题,以冷季型草坪草多年生黑麦草(Lolium perenne)品种蒙特利3号和高羊茅(Festuca arundinacea)品种皇冠作为研究材料,探讨不同LED红/蓝光配比(3∶1、5∶1、7∶1、9∶1)对草坪草过氧化氢酶(CAT)、抗坏血酸过氧化物酶(APX)、过氧化物酶(POD)的活性以及分蘖、生长速率、细胞膜透性、丙二醛(MDA)含量、过氧化氢(H2O2)含量等生长及生理特性的影响。结果表明,过高的红光或蓝光比例均会对草坪草产生较大胁迫,红/蓝光配比为7∶1时,两种冷季型草坪草受到胁迫最小,其CAT和APX活性较高,分蘖数最多,蒙特利3号生长速率最高,细胞膜透性最低,MDA含量和过氧化氢含量最低,细胞健康,抗性较强。To solve the problem posed by shade in stadium,the objective of this study was to investigate the effect of the correct red/blue light emitting diodes(LED)light ratio on the of two cool-season turfgrasses(Lolium perenne‘Monterey No.3’and Festuca arundinacea‘Crown’).The amount of catalase(CAT),ascorbate peroxidase(APX),peroxidase(POD),malondialdehyde(MDA),and hydrogen peroxide(H2 O2),and membrane penetrability,tiller,and growth rate of the turfgrasses were measured.A completed randomized block design was adopted in this study,which included four red/blue light ratio treatments:3∶1,5∶1,7∶1,and 9∶1.The results of this study indicate that turfgrasses planted under 3∶1 and9∶1 treatments showed worse growth and physiological characteristics,which means excessive blue or red spectrum caused significant damage to turfgrasses.The 7∶1 ratio treatment showed the lowest stress as CAT and APX were more activated and the number of tiller and the growth rate were higher than those in other treatments.In addition,the content of MDA and H2 O2 and the membrane penetrability were lower compared to those in other treatments,and turfgrass were healthier in general in the 7∶1 treatment.

关 键 词：LED 红/蓝光配比 冷季型草坪草 生长及生理特性 

分 类 号：S688.4[农业科学—观赏园艺]