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Liu Wen-Xin, Wan Xian-Chong. Responses of different photosynthetic physiological processes in Populus alba×P. glandulosa to drought and rehydration[J]. Plant Science Journal, 2019, 37(4): 530-539. DOI: 10.11913/PSJ.2095-0837.2019.40530
Citation: Liu Wen-Xin, Wan Xian-Chong. Responses of different photosynthetic physiological processes in Populus alba×P. glandulosa to drought and rehydration[J]. Plant Science Journal, 2019, 37(4): 530-539. DOI: 10.11913/PSJ.2095-0837.2019.40530

Responses of different photosynthetic physiological processes in Populus alba×P. glandulosa to drought and rehydration

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This work was supported by grants from the Basic Research Foundation from the Institute of New Forestry Technology from Chinese Academy of Forestry (CAFYBB2018SZ019) and National Natural Science Foundation of China (31270648).

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  • Received Date: December 12, 2018
  • Revised Date: January 20, 2019
  • Available Online: October 31, 2022
  • Published Date: August 27, 2019
  • Populus alba×P. glandulosa (‘84K’) was used to study changes in photosynthetic physiological characteristics after drought stress and rehydration. Results showed that the main photosynthetic processes of ‘84K’ were not synchronous during drought stress and rehydration. During drought, the carboxylation rate, stomatal conductance (Gs), and mesophyll conductance (Gm) of ‘84K’ declined significantly, but the former decreased less than the latter two. Thus, at this time, photosynthesis was mainly restricted by Gs and Gm. After rehydration, Gm recovered rapidly; however, the photochemical quenching process and carboxylation rate did not recover to the control level, which may restrict the carbon fixation and photosynthesis of ‘84K’.
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