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高浓度二氧化碳处理后凤梨光合作用的恢复

惠俊爱1,2;叶庆生1   

  1. 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,广州 510631;2长江大学园艺园林学院, 湖北荆州 434025
  • 收稿日期:2006-05-19 修回日期:1900-01-01 出版日期:2007-05-15 发布日期:2007-05-15

Recovery of bromeliad photosynthesis after exposed to elevated CO2.

HUI Jun-ai; YE Qing-sheng   

  1. 1Key Laboratory of Biotechnology for Plant Development of Guangdong Province, College of Life Science, South China Normal University, Guangzhou 510631, China;2College of Gardening and Horticulture, Yangtze University,Jingzhou 434025, Hubei, China
  • Received:2006-05-19 Revised:1900-01-01 Online:2007-05-15 Published:2007-05-15

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.

关键词: 作物缺水指数, 干旱, 遥感, 监测

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

Key words: Crop water shortage index, Drought, Remote sensing, Monitoring