%0 Journal Article %A CAO Hong-Lin* %A CHEN Zhong-You %A JIANG Yun-Sheng %A TANG Hui %A WANG Man-Liang %A WEI Xiao %T The Photosynthetic Characteristics of Camellia euphlebia %D 2007 %R 10.7525/j.issn.1673-5102.2007.04.012 %J Bulletin of Botanical Research %P 434-438 %V 27 %N 4 %X The photosynthetic characteristics of leaves in Camellia euphlebia were studied with LI-6400 (Li-Cor Inc., USA) portable photosynthesis system. The results showed that the diurnal changes of photosynthetic rate (P_n) in C. euphlebia exhibited a mono-peak style, and the maximum value of P_n appeared at 11:00 am in summer. The maximum photosynthetic rate（P_max）, light saturation point（LSP）, light compensation point（LCP）for the leaves of C. euphlebia were 3.81 μmol·m^-2·s^-1, 459.9 μmol·m^-2·s^-1 and 6.9 μmol·m^-2·s^-1, respectively. The light saturation and compensation point were very low, which indicated that C. euphlebia was a shade plant. Under the condition of optimum light intensity and temperature, the net photosynthetic rate of C. euphlebia increased linearly when the concentration of CO₂ enhanced from 50 μmol·mol^-1 to 800 μmol·mol^-1. Elevation of CO₂ concentration increased the P_n and the efficiency of ligh utilizing in C. euphlebia. The CO₂ saturation (CSP), compensation point（Г^*）, the maximum carboxylation rate （V_cmax）and maximum rate of electron transport（J_max） were about 1 200 μmol•mol^-1, 70.1 μmol·mol^-1, 17.5 μmol·m^-2·s^-1, respectively. %U https://bbr.nefu.edu.cn/EN/10.7525/j.issn.1673-5102.2007.04.012