不同生境下朱砂根形态、光合及叶绿素荧光特性分析  

Morphology,photosynthetic and chlorophyll fluorescence characteristics of Ardisia crenata in different habitats

作　　者：胡菊 莫金凤 荣志能 梁振生 邓宏杰 莫云 梁芳[1] HU Ju;MO Jinfeng;RONG Zhineng;LIANG Zhensheng;DENG Hongjie;MO Yun;LIANG Fang(College of Smart Agriculture,Yulin Normal University,Yulin 537000,China;College of Forestry and Landscape Architecture,South China Agricultural University,Guangzhou 510642,China;Sanjiang Forestry Workstation,Liuzhou 545500,China)

机构地区：[1]玉林师范学院智慧农业学院,广西玉林537000 [2]华南农业大学林学与风景园林学院,广东广州510642 [3]三江侗族自治县丹洲镇林业工作站,广西柳州545500

出　　处：《四川林业科技》2025年第1期97-104,共8页Journal of Sichuan Forestry Science and Technology

基　　金：广西自然科学基金项目(2022GXNSFBA035540);广西高校中青年教师基础能力提升项目(2022KY0583)。

摘　　要：朱砂根兼具观赏和药用价值,市场应用前景广阔。以林下、温室、露天三种不同生境下朱砂根植株为研究对象,测定并分析形态结构、光合及叶绿素荧光特性,为其栽培及推广应用提供参考。结果表明:(1)林下生境中朱砂根的株高、第一分枝高度、最长枝长度、冠幅、单枝径、叶宽、地径、最长枝叶片数、分枝数显著高于温室及露天生境,叶长显著高于露天且略高于温室生境,而叶片厚度则显著低于露天且略低于温室生境;(2)林下生境中朱砂根的胞间CO_(2)浓度(Ci)显著低于其他两种生境,净光合速率(Pn)和蒸腾速率(Tr)则显著高于其他两种生境,气孔导度(Gs)略低于温室生境而显著低于露天生境;(3)林下生境中朱砂根的最小荧光(Fo)显著低于其他两种生境,最大荧光(Fm)则显著高于其他两种生境,光化学效率(Fv/Fm)和实际光化学效率(ΦPSⅡ)与其他两种生境无显著差异,光化学淬灭系数(qP)略低于温室生境且显著低于露天生境,非光化学淬灭系数(qN)略高于温室生境且显著高于露天生境。林下生境中朱砂根的形态结构发育最优、光合利用效率最高,因此林下生境是朱砂根生长的最佳生境。Ardisia crenata has broad potential commercial application with both ornamental and medicinal value.The morphological structure,photosynthetic and chlorophyll fluorescence characteristics of A.crenata in three different habitats,namely in forest understory,greenhouse,and open air,were measured and analyzed to provide reference for cultivation and popularizaiton of A.crenata.The results showed that:(1)The plant height,first branch height,longest branch length,canopy width,branch diameter,leaf width,stem diameter at ground level,leaf number on the longest branch,and branch number of A.crenata in the forest understory were significantly higher than those in the greenhouse and open air habitats.The leaf length was significantly higher than that in the open air habitat and slightly higher than that in the greenhouse habitat.The leaf thickness was significantly lower than that in the open air habitat and slightly lower than that in the greenhouse habitat;(2)The intercellular CO_(2)concentration(Ci)of A.crenata in the forest understory were significantly lower than those in the greenhouse and open air habitats,while the net photosynthetic rate(Pn)and transpiration rate(Tr)were significantly higher than those in the greenhouse and open air habitats.The canopy stomatal conductance(Gs)were slightly lower than those in the greenhouse habitat and significantly lower than those in the open air habitat;(3)The initial fluorescence(Fo)of A.crenata in the forest understory was significantly lower than those in the greenhouse and open air habitats,while the maximum fluorescence(Fm)was significantly higher than those in the greenhouse and open air habitats.No significant differences in the maximum PSII light energy conversion efficiency(Fv/Fm)and actual photochemical efficiency of PSII(ΦPSII)of A.crenata among the forest,greenhouse and open air habitats.The photochemical quenching(qP)in the forest was slightly lower than that in the greenhouse habitat and significantly lower than that in the open air habitat.Non-photochemical quen

关 键 词：朱砂根 不同生境 形态结构 光合特性 叶绿素荧光特性 

分 类 号：S686[农业科学—观赏园艺]