CO_2浓度升高对三种地被类观赏竹生理特性的影响  

Effects of elevated CO_2 concentration on physiological characters of three dwarf ornamental bamboo species

作　　者：庄明浩[1,2] 陈双林[1] 李迎春[1] 郭子武[1] 杨清平[1] 

机构地区：[1]中国林业科学研究院亚热带林业研究所,浙江富阳311400 [2]中国林业科学研究院亚热带林业实验中心,江西分宜336600

出　　处：《应用生态学报》2013年第9期2408-2414,共7页Chinese Journal of Applied Ecology

基　　金：国家公益性行业(林业)科研专项(201004008);中央级公益性科研院所基本科研业务费专项(RISF6915);浙江省省院合作项目(2010SY01);浙江省农业科技成果转化项目(2012T201-01)资助

摘　　要：运用开顶式气室(OTCs)模拟大气CO2浓度升高(500、700μmol·mol-1)情景,以环境背景大气为对照,研究CO2浓度升高对3种地被类观赏竹(美丽箬竹、黄条金刚竹和白缟椎谷笹竹)叶片的膜脂过氧化和抗氧化系统的影响及其种间差异.结果表明:试验进行103 d后,500μmol·mol-1CO2浓度下,3种地被类观赏竹的叶片超氧阴离子含量、丙二醛(MDA)含量、相对电导率和可溶性糖含量总体上没有发生明显的变化,但叶片超氧化物歧化酶(SOD)、过氧化物酶(POD)、过氧化氢酶(CAT)和抗坏血酸过氧化物酶(APX)活性有一定程度的改变;700μmol·mol-1CO2浓度下,3个竹种的叶片MDA含量和相对电导率没有发生明显变化,但对叶片超氧阴离子含量、可溶性糖含量和SOD、POD、CAT、APX活性的影响较为明显.不同竹种对CO2浓度升高环境的适应能力为美丽箬竹>黄条金刚竹>白缟椎谷笹竹.By using open-top chambers （OTCs） to simulate the scenes of elevated CO2 concentra- tions [ 500 μmol · mo1-1 （ T_1 ） and 700 μmol · mol-1 （ T_2 ） I, and taking ambient atmospheric CO2 concentration as the control （CK）, this paper studied the effects of elevated CO2 concentration on the lipid peroxidation and anti-oxidation enzyme system in Indocalamus decorus, Pleioblastus kon- gosanensis, and Sasa glabra leaves. After 103 days treatment, the 02 ： and MDA contents, relative electron conduction, and soluble sugar content in the three dwarf ornamental bamboo species leaves in T1 had no obvious change, but the activities of anti-oxidation enzymes （ SOD, POD, CAT, and APX） changed to a certain extent. In T2, the MDA content and relative electron conduction had no obvious change, but the 02 and soluble sugar contents and the anti-oxidation enzymes activities changed obviously. The adaptation capacity of the three bamboo species to elevated CO_2 concentra- tion was in the order of I. decorus 〉 P. kongosanensis 〉 S. glabra.

关 键 词：美丽箬竹 黄条金刚竹 白缟椎谷笹竹 CO_2浓度升高 膜质过氧化 抗氧化系统 

分 类 号：S688.4[农业科学—观赏园艺]