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[Photosynthetic characteristics of Drynaria fortunei and its relation to environmental factors]
Zhao-Yang Li1, Xi Zhou, Jun Chen
1College of Biology and Environmental Science, Jishou University, Jishou 416000, China. ligz0000@126.com
Objective:
To have a better utilization of diurnal photosynthetic variation of Drynaria fortunei in three light environments and provide theoretical basis for its artificial cultivation.
Methods:
Diurnal photosynthetic variation of Drynaria fortunei were determinated by portable photosynthesis analysis system (Li-6400), and correlation between physiological and environmental factors was further analysed.
Results:
The diurnal net photosynthetic rate (NPR) exhibited a single peak curve, with the peak value of NPR occurring at 15:30. The mean diurnal Pn of D. fortunei in three environments followed a tread of tree epiphytes > shine > shade. WUE had significantly positive correlation with NPR. Air temperature (Ta), ambient CO2 concentration (Ca) and relative humidity (RH) were the main environmental factors for NPR of D. fortunei.
Conclusion:
The optimum cultivation condition of D. fortunei is 32 degrees C, RH around 40%, and appropriate shade is recommended.
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