Comparison of Photosynthetic Characteristics and Biochemical Components of Wuyi(Oolong) Rock Tea
The photosynthetic gas exchange parameters, chlorophyll fluorescence parameters and biochemical composition of five varieties of the main cultivated tea(Camellia sinensis cv. Rougui, Camellia sinensis cv.Jinmaohou, Camellia sinensis cv. Tieluohan, Camellia sinensis cv. Qidan and Camellia sinensis cv. Queshe) in Fujian were studied. The results showed that there were significant difference among chlorophyll content, net photosynthesis rate, light compensation point, and light saturation point between the different varieties. Camellia sinensis cv. Jinmaohou, Camellia sinensis cv. Tieluohan and Camellia sinensis cv. Qidan showed higher photosynthetic performance and production potential, excellent photosynthetic characteristics because of their higher chlorophyll content, net photosynthesis rate and light saturation point. The diurnal change of photosynthesis of each variety was a bimodal peak curve. The light compensation point of each variety was lower so that the weak light also could be used. The activities of PSII efficiency of primary conversion of light energy and potential activity of PSII reaction center of Camellia sinensis cv. Qidan and Camellia sinensis cv. Jinmaohou were higher than that of other varieties. There were significant difference among amino acid, tea polyphenol and caffeine of all varieties.From the perspective of photosynthetic characteristics, all the tree varieties could be further promoted in Fujian.