Journal of Guangxi Normal University(Natural Science Edition) ›› 2017, Vol. 35 ›› Issue (2): 133-141.doi: 10.16088/j.issn.1001-6600.2017.02.020

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The Physiological and Ecological Responses of Leaves ofIsoetes sinensis under Different pH Treatments

ZHUANG Fenghong1, MA Jiangming1,2,3*, CHEN Liting1,SU Jing1, ZHANG Yajun1, YU Fangming2,4   

  1. 1. College of Life Sciences, Guangxi Normal University, Guilin Guangxi 541006, China;
    2. Key Laboratory of Ecology ofRare and Endangered Species and Environmental Protection, Ministry of Education, Guilin Guangxi 541004, China;
    3. Key Laboratory of Karst Ecosystem and Rocky Desertification Control, Ministry of Land and Resources, Guilin Guangxi541004, China;
    4. College of Environment and Resource, Guangxi Normal University, Guilin Guangxi 541006, China
  • Online:2017-07-25 Published:2018-07-25

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Abstract: Hydroponic culture was conducted to study the effect of different pH values(6.4-7.2) on the growth of Isoetes sinensis, the paper examined the changing rule of physiological and biochemical characteristics and photosynthetic fluorescence characteristics. The chlorophyll content, Pm, α, Ik, Fv/Fm, Yield and qP showed a single-peak curve, first increasing and then decreasing during the experimental period. As a result, the highest chlorophyll content, Pm, α, Ik, Fv/Fm, Yield and qP were detected in the leaves of plants in the pH=6.6 treatment. The soluble sugar content, MDA content, PRO content, CAT activities, POD activities and qN decreased at the beginning then increased as pH values increased. And the lowest soluble sugar content, MDA content, PRO content, CAT activities, POD activities and qN were detected in the pH=6.6 treatment. The results show that the partial acid water is more suitable for the growth of Isoetes sinensis.

Key words: Isoetes sinensis, pH, physiological and biochemical characteristics, photosynthetic fluorescence characteristics

CLC Number: 

  • R446.6
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