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Seasonal changes of photosynthetic characteristics of four evergreen plants

He Dongxiang, Shen Yungang

Shanghai Institute of Plant Physiology, Chinese Academy of Sciences. Shanghai 200032

Abstract

Net photosynthetic rate (P_(n))and dark respiratory rate (R_(d)) of sun leaves of four evergreen plants (V. odoratissimum, L. lucidum, B. multiplex and T. forlunei) grown in Shanghai at different temperatures were measured with an ADC CO_(2)infrared analyzer at saturated photosynthetically active radiation in four seasons of a year. The results showed that autumn was the best season for photosynthesis of all these plants tested. V. odoratissimum and L. lucidarm wer more adaptable to the changing natural environment thab B. mailtiplex and T. fortunei. These differences of acclimation of plaants seems to be related to hier natural distribution, for Shanghai is almost the northern boundary of habitat of B. multiplex and T. fortunei while V. odoratissimaum and L. lucidum can distribute in the north far from Shanghai.

Key words: Photosynthesis;The ratio of variable andmaximum fluorescence;Evergreen plant;Temperature effect

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Citing This Article：

He Dongxiang, Shen Yungang. Seasonal changes of photosynthetic characteristics of four evergreen plants. Acta Physiol Sin 1995; 47 (1): (in Chinese with English abstract).