高浓度二氧化碳处理后凤梨光合作用的恢复  

Recovery of bromeliad photosynthesis after exposed to elevated CO_2.

作　　者：惠俊爱[1] 叶庆生[1] 

机构地区：[1]华南师范大学生命科学学院广东省植物发育生物工程重点实验室

出　　处：《应用生态学报》2007年第5期1003-1008,共6页Chinese Journal of Applied Ecology

基　　金：广东省自然科学基金重点项目(04105806);广东省科技计划项目(2006B20301006);广东省重大科技专项资助项目(2006A20101007).

摘　　要：对紫星凤梨和丹尼斯凤梨在高CO2浓度[T1(600±40)μmol.mol-1,T2(900±40)μmol.mol-1]下处理150 d后转移到大气环境中30 d内的光合作用、光合关键酶活性等的恢复情况进行了研究.在大气环境中紫星凤梨T1、T2处理的净光合速率分别比对照低7.41%和13.33%,丹尼斯凤梨T1处理净光合速率接近于对照,而T2处理略高于对照;两种凤梨T1、T2处理叶片中淀粉与可溶性糖的积累在恢复30 d时接近对照组的水平,Rubisco与乙醇酸氧化酶活性与对照的差别减小,但仍低于对照.After exposed to elevated CO2[ T1： （600 ±40） μmol · mol^-1 and T2：（900 ±40） μmol·mol^-1] for 150 days, Guzmania ‘ Luna＇ and Guzmania ‘ Denise＇ were transferred to ambient CO2 for 30 days to investigate the recovery of their photosynthesis and their key photosynthetic enzyme activities. The results showed that compared with that in CK, the net photosynthetic rate （Pn） of Guzmania ‘ Luna＇ in treatments Tl and T2 was decreased by 7.41% and 13.33% , respectively. The Pn of Gu.zmania ＇ Denise＇ in Tl was approached to CK, and that in T2 was higher than CK. After 30 days recovery, the accumulation of soluble sugar and starch in test bromeliads leaves decreased obviously, with the contents being close to those of CK. The rubisco and glycolate oxidase activities in treatments T1 and T2 had a decreased difference with CK, but were still lower than those of CK.

关 键 词：紫星凤梨 丹尼斯凤梨 CO2浓度升高 光合作用 光合恢复 

分 类 号：S668.3[农业科学—果树学]