广西林业科学2024，Vol.53Issue(6)：728-737,10.DOI:10.19692/j.issn.1006-1126.20240606
4个奇楠沉香品系苗期不同光处理阶段生理特性和叶片结构比较
Comparison on Physiological Characteristics and Leaf Structures of Four Aquilaria sinensis'Chi-Nan'Strains at Different Light Treatment Stages during Seedling Stage
摘要
Abstract
To explore growth adaptability changes of different Aquilaria sinensis'Chi-Nan'strains under early-stage shading and late-stage natural light condition at seedling stage and to provide scientific basis and guid-ance for cultivation and popularization of high-quality seedlings of A.sinensis'Chi-Nan',four A.sinensis'Chi-Nan'strains,including TJ(GLX01),JSY(GLX02),GX(GLX03)and XGY(GLX11),were used as experimental materials to observe growth status from 90 to 240 days after grafting.Differences in leaf physiological character-istics and anatomical structures were compared after 150 days of shading treatment and 90 days of natural light recovery.Results showed that seedlings of four strains of A.sinensis'Chi-Nan'grew slowly from 90 to 150 days after grafting.From 150 to 240 days after grafting,plant height,ground diameter,graft union diameter,leaf thickness,upper epidermal thickness,lower epidermal thickness,spongy tissue thickness and main vein thick-ness as well as net photosynthetic rate and water use efficiency of four A.sinensis'Chi-Nan'strains increased,and intercellular carbon dixode concentration and SPAD decreased.GLX01 and GLX03 had thicker upper epi-dermis,which was conducive to improve photosynthetic efficiency.Net photosynthetic rates and stomatal con-ductances of GLX01 and GLX03 increased significantly under natural light environment.Chlorophyll synthesis regulation mechanism of GLX03 was more effective.GLX02 and GLX11 were sensitive to light changes,and light conditions need to be finely regulated during seedling raising.关键词
叶片解剖结构/光合生理特性/光照/奇楠沉香Key words
leaf anatomical structure/photosynthetic physiological characteristic/lighting/Aquilaria sinensis'Chi-Nan'分类
资源环境引用本文复制引用
潘彩玲,邓福春,官秀芳,梁家铭,郝静伟,刘莉,竺永金,李开祥,叶绍明..4个奇楠沉香品系苗期不同光处理阶段生理特性和叶片结构比较[J].广西林业科学,2024,53(6):728-737,10.基金项目
广西重点研发计划项目(桂科AB22080082) （桂科AB22080082）
广西林业科技项目(桂林科研[2022ZC]第72号) （桂林科研[2022ZC]第72号）
广西重点实验室项目(JA-23-02-02) （JA-23-02-02）
