光强对珍稀濒危植物毛果木莲幼苗生长和叶绿素含量的影响  

Effect of Light Intensity on Growth and Chlorophyll Contents of Rare and Endangered Plant Manglietia ventii Seedlings

作　　者：张光飞[1] 杨波[1] 苏文华[1] 楚永兴 周睿 欧阳志勤[3] 

机构地区：[1]云南大学生态学与地植物学研究所,云南昆明650091 [2]云南省红河州林业科学研究所,云南蒙自661100 [3]云南省环境科学研究院,云南昆明650034

出　　处：《北方园艺》2014年第17期80-82,共3页Northern Horticulture

基　　金：云南省应用基础研究计划资助项目(2011FZ250);国家水体污染控制与治理科技重大专项资助项目(2012ZX07101-003-04-04)

摘　　要：以珍稀濒危植物毛果木莲幼苗为试材,在100%(RI100%)、35%(RI 35%)、7.5%(RI7.5%)3种不同光强下,测定并分析了株高、基茎、叶长、叶宽、比叶面积、平均叶面积和叶绿素、类胡萝卜素的含量以及类胡萝卜素/叶绿素(Car/Chl)的值。结果表明:随着光强的增加,毛果木莲幼苗基茎增加,而株高、叶长、叶宽、比叶面积和平均叶面积随光强的增加而减少;毛果木莲幼苗的总叶绿素和类胡萝卜素含量随着光强的增加而显著降低,而叶绿素a/b和类胡萝卜素/叶绿素(Car/Chl)随光强的增加而增大。Taking Manglietia ventii seedlings as experimental materials,under three different relative irradiance with7.5%,35%and 100%,the plant height,basic diameter,leaf length,leaf width,specific leaf area（SLA）,mean leaf area（MLA）,chlorophyll contents,chlorophyll a/b（Chl a/b）,carotenoid contents,and Car/Chl value were measured and analyzed.The results showed that the increase in relative irradiance resulted in an decreased significantly in seedlings plant height,leaf length,leaf width,SLA,MLA,total chlorophyll and carotenoid contents,while seedlings basic diameter,Chl a/b and Car/Chl ratio enhanced.

关 键 词：毛果木莲 生长光强 比叶面积 色素含量 

分 类 号：Q948.112[生物学—植物学]