Abstract：With the hibiscus mutabilis in shade and sun as material, response of gas-exchange parameters in hibiscus mutabilis on light intensity and temperature were studied in this paper. The photosynthetic rate( Pn), transpiration rate( E ) , intercellular CO2 concentration (Ci), stomatal conductance( Gs) were determined. Experiments show that with the increase of light intensity , Pn and E were on increase, while the Ci and Gs were on decrease. Based on the results, hibiscus mutabilis in the sun photosynthetic physiological performance superior to the hibiscus mutabilis in the shade. The results of this study found that Hibiscus is more suitable for cultivation in the sun environment, and provide technical reference for the Hibiscus landscaping.
Key words: hibiscus mutabilis; gas-exchange parameters; light intensity; temperature...