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Study the Changes of Chlorophyll Fluorescence Parameters of Schisandra chinensis in Predormancy

XU Pei-lei, JIAO Zhu-qing, WANG Zhen-xing, ZHANG Qing-tian, LI Xiao-hong, LIU Ying-xue, ZHAO Ying, YANG Yi-ming   

  1. Laboratory of Special Wild Plant Physiology,Institute of Special Wild Economic Animal and Plant Science,Chinese Academy of Agricultural Sciences,Changchun 130122,China
  • Received:2012-03-05 Published:2012-12-31

Abstract: Use of chlorophyll fluorescence parameters to indicate the status of predormancy for dormant plants,and provide convenient and effective indicators for the regulation of plant dormancy. A study was carried out on 1 -year-old of Schisandra chinensis ( Turcz) Baill to investigate the chlorophyll fluorescence characteristics of leaves inthe predormancy through IMAGING-PAM. The results showed that veins in the pictures of Fv /Fm, qP and NPQ werebecame prominent; Compare with non-dormant, the Fo, qP, Y( NO) were significantly higher and the Fm, Fv /Fm,NPQ and Y( NPQ) were much lower than Schisandra chinensis in the state of dormant. It indicated that dormant decreased the efficiency of primary conversion of light energy of PSⅡ , made the reaction center damage and inactivation, disrupted electron transport severely and the excess light energy couldn't dissipated through heat, so the photodamage were higher and the photo-protection were much lower. In summary, Fv /Fm, Y( NPQ) and Y( NO) may beused to indicate the photosynthetic structural damage of Schisandra chinensis in the predormant process.

Key words: Schisandra chinensis (Turcz) Baill, Chlorophyll fluorescence, Predormancy, Photosynthetic structures

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Cite this article

XU Pei-lei, JIAO Zhu-qing, WANG Zhen-xing, ZHANG Qing-tian, LI Xiao-hong, LIU Ying-xue, ZHAO Ying, YANG Yi-ming. Study the Changes of Chlorophyll Fluorescence Parameters of Schisandra chinensis in Predormancy[J]. ACTA AGRICULTURAE BOREALI-SINICA, doi: 10.3969/j.issn.1000-7091.2012.z1.042.