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Updated: Jun 20, 2026

Evaluation of Photosynthetic Behaviors by Simultaneous Measurements of Leaf Reflectance and Chlorophyll Fluorescence Analyses
Published on: August 9, 2019
[Photosynthetic characteristics and chlorophy II fluorescence parameters of different populations of Pinellia
Yawen Xiao1, Kangcai Wang, Lei Yang
1Institute of Chinese Medicinal Materials, Nanjing Agricultural University, Nanjing 210095, China. xiaoyw2005@yahoo.com.cn
Objective:
To study the photosynthetic characteristics and chlorophyll fluorescence parameters of Pinellia ternate from different sources, in order to provide basis for cultivation and breeding.
Method:
Pigment contents were compared among different sources by the Lichtenthaler method. The light-response and diurnal photosynthesis course of P. ternata from different sources were analyzed by LI-6400 system, and chlorophll fluorescence parameters were analyzed by PAM-2100 system.
Result:
The difference of photosynthetic characteristics among the sources were remarkable. The light compensation point (LCP) of P. ternate from different sources were 11.57-17.88 micromol x m(-2) x s(-1), the light saturation point (LSP) were 1 000-1 300 micromol x m(-2) x (s-1). All the sources have obvious "midday depression". P. ternate cultivated in Xinjiang showed a higher light saturation point (LSP) and better chlorophyll fluorescence parameters.
Conclusion:
P. ternata cultivated in Xinjiang showed better photosynthetic characteristics and chlorophyll fluorescence parameters than the others.
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