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作 者 ：惠俊爱^1,2;叶庆生¹

期 刊 ：应用生态学报 2007年 18卷 05期 页码：1003-1008

关键词：凤梨；

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.

Abstract: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 (P_n) of Guzmania‘Luna’ in treatments T₁ and T₂ was decreased by 7.41% and 13.33%, respectively. The P_n of Guzmania‘Denise’ in T₁ 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.

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