Correlation Analysis between Photosynthetic Characteristics and Contents of Active Ingredients in Saxifraga stolonifera Curt. under Different Light and Temperature Conditions
Abstract:Saxifraga stolonifera Curt. was potted under different light and temperature treatments. Photosynthetic characteristics and contents of active ingredients were measured to analyze the correlation between them. The results showed that, photosynthetic rate was the highest under 50% transmittance, and the lowest under 100% transmittance. Contents of bergenin and gallic acid in S.stolonifera Curt. were the highest under 100% transmittance. Photosynthetic rate of S.stolonifera Curt. was the highest under 20℃/16℃(12 h daytime/12 h nighttime) optimum temperature, which had the highest contents of bergenin and gallic acid. Correlation analysis showed that, contents of bergenin and gallic acid and photosynthetic rate, stomatal open area had positive correlations, contents of gallic acid and photosynthetic rate and transmittance rate had extremely significantly positive correlation under temperature treatment. Contents of gallic acid and photosynthetic effective radiation had significant positive correlation under light treatment.