ALA对红掌叶片光合作用及叶绿素荧光参数的影响  

Effects of ALA treatment on photosynthetic and chlorophyII fluorescence dynamics of Anthurium andraeanum

作　　者：康博文[1] 李文华[1] 刘建军[1] 撒文清[1] 

机构地区：[1]西北农林科技大学林学院,陕西杨凌712100

出　　处：《西北农林科技大学学报（自然科学版）》2009年第4期97-102,共6页Journal of Northwest A&F University(Natural Science Edition)

基　　金：日本COSMO公司资助项目(X14210335)

摘　　要：【目的】探讨叶面喷施5-氨基乙酰丙酸（ALA）对红掌光合作用及叶绿素荧光参数的影响,为花卉植物上合理施用ALA奠定基础。【方法】选择3组红掌,每组60株,自2007-07-15-10-30,每15 d每组叶面分别喷施1次0（清水）,200和400 mg/L的ALA,利用Li-6400光合测定系统和Li-6400-40荧光叶室分别测定不同质量浓度ALA处理对红掌叶片光合作用及叶绿素荧光参数指标的影响。【结果】与对照相比,200和400 mg/L ALA处理的红掌叶片叶绿素总量均极显著（P〈0.01）提高,提高幅度分别为6.7%和8.5%;1 d中（8：00-18：00）的光合速率显著提升,在较高光辐射强度下,光合速率的提高更为明显;初始荧光（Fo）极显著（P〈0.01）地降低,降低幅度分别为7.5%和10.4%;最大荧光（Fm）、可变荧光（Fv）、最大光化学效率（Fv/Fm）、潜在光化学效率（Fv/Fo）、光能获取能力（1/Fo-1/Fm）依次提高0.3%和0.7%,2.5%和3.8%,2.2%和3.1%,10.7%和15.8%,10.4%和15.0%,差异达极显著（P〈0.01）或显著（P〈0.05）水平;200和400 mg/L ALA处理对有效光化学速率（Fv′/Fm′）的影响不显著（P〉0.05）,但可使ФPSⅡ分别提高42.4%和66.7%,NPQ分别提高2.1%和3.3%,qP分别提高43.0%和67.7%,差异均达显著水平（P〈0.05）;可使PCR分别降低13.9%和40.0%,ETR分别提高37.1%和61.9%,差异均达极显著水平（P〈0.01）。【结论】喷施ALA可以提高红掌叶片的光化学效率,对降低不良环境的胁迫有积极作用,因而其可以在红掌上施用。[Objective] The paper studied the effect of 5-aminolevulinic acid （ALA） on chlorophyll a, photosynthetic rate and chlorophyll fluorescence dynamics of Anthurium andraeanum. [Method：] 3 Anthu- rium andraeanum groups including 180 plants were treated every 15 days with different content of ALA, 0, 200 and 400 mg/L, during 15 ,July to 30, October 2007. Photochemistry rate and chlorophyll fluorescence of its leaves were measured with Li-6400 photosynthetic measure system and Li-6400-40 chlorophyll fluorometer respectively. [Result] ALA application with 200 and 400 mg/L ALA, compared with the control （0 mg/L ALA）, decreased the minimal fluorescence （Fo） by 7. 5% and 10. 4%, the photochemistry rate （PCR） 13.9% and 40.0% ,increased the content of chlorophyll a by 6.7% and 8.5% ,photosynthetic rate by 11.8% and 18.4% ,the maximal fluorescence （Fro） 0.3% and 0.7%, the variable fluorescence （Fv） 2.5% and 3.8%, the PS Ⅱ maximal photochemical efficiency （Fv/Fm） 2. 2% and 3. 1%, the potential photochemical efficiency（Fv/Fo） 10. 7% and 15.8%, the ability of PS Ⅱ reaction center to trap energy from antenna pigment （1/Fo-1/Fm） 10.4% and 15.0% ,PSⅡ actual photochemical efficiency （Ph.iPS2） 42.4% and 66.7%, the electron transfer rate （ETR） 37.1% and 61.9%, the non-photochemical quench （NPQ） 2.1% and 3. 1%,photochemical quench （qP） 43.0% and 67.7% respectively. [Conclusion] The data presented in the paper suggested that ALA treatment might increase photosynthetic rate and enhance the ability to adapt to adverse environment for Anthurium andraeanum.

关 键 词：红掌 5-氨基乙酰丙酸(ALA) 光合速率 叶绿素荧光 

分 类 号：S682.301[农业科学—观赏园艺]