Comparative photosynthesis characteristics of <Emphasis Type="Italic">Calycanthus chinensis</Emphasis> and <Emphasis Type="Italic">Chimonanthus praecox</Emphasis> |
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| Authors: | L Z Mao H F Lu Q Wang M M Cai |
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| Institution: | (1) College of Chemistry and Life Science, Zhejiang Normal University, Jinhua, Zhejiang, 321004, China |
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| Abstract: | Calycanthus chinensis is an endangered plant of the national second-grade protection of China restricted in a small area in Zhejiang Province.
We studied parameters of photosynthesis, chlorophyll (Chl) contents, and Chl fluorescence (minimum fluorescence, F0, maximum fluorescence, Fm, variable fluorescence, Fv, and Fv/Fm) of C. chinensis and Chimonanthus praecox. C. chinensis had lower compensation irradiance but higher saturation irradiance than C. praecox. Hence C. chinensis has more advantage in obtaining and utilizing photon energy and higher Chl content, and is more adaptive to higher temperature
and propitious to thermal dissipation than C. praecox. In addition, C. chinensis produces abundant, well-preserved seed with a higher germination rate and a wider adaptability to temperature than C. praecox. Thus C. chinensis is prone to survival and viability, and gets rid of the endangered plant species of the national second-grade protection
of China. |
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| Keywords: | biodiversity chlorophyll content and fluorescence endangered plant irradiance net photosynthetic rate species differences temperature transpiration |
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