Abstract: Photosynthetic characteristics , including chlorophyll content , soluble protein content and carboxylation efficiency , in different cultivars of Camellia japonica , and the influences of light intensity and temperature on photosynthesis of the cultivars were studied. The results showed that photosynthesis in different
cultivars of Camellia japonica were similar : Light compensation point is between 6. 7 - 8. 4μmol·m^-2·s ^-1 , light saturation point is arroud 300μmol·m^-2·s ^-1, maximal light saturation photosynthetic rate is between 4. 1-4. 8μmol·m^-2·s^-1 , apparent quantity yield is between 0. 055 - 0. 075 CO₂/ photon, Carboxylation efficiency is between 0. 03 - 0. 04 μmol·m^-2·s ^-1 , proper temperature was between 15 - 25 ℃. Therefore , they were susceptible to higher light intensity and temperature. For that , during the cultivation and attendance to Camellia japonica L , both light intensity and temperature should be proper to meet with the needs of growth and development of different cultivars of Camellia japonica.

Key words: Camellia japonica L., Photosynthesis, Light intensity, Temperature, Greenhouse