COMPARATIVE STUDY OF LEAF MATERIAL PROPERTIES IN CYCLOCARYA PALIURUS FROM DIFFERENT PROVENANCES: FLAVONOID CONTENT, PIGMENT VARIATION, AND PHOTOSYNTHETIC EFFICIENCY

As a unique species in China, the leaves of Cyclocarya paliurus are rich in various active ingredients, which have significant potential for development and utilization.Cyclocarya paliurus is widely distributed and exhibits notable variation.In this study, samples of Cyclocarya paliurus from the Jiulianshan and Xiushui provenanceXiushui provenance were selected to analyze their phenotypic diversity.The total flavonoid content of phenotypic traits with obvious optical classification characteristics was measured and compared.The study found significant differences in the polysaccharide content between different sources, with the Xiushui provenance showing notably higher polysaccharide content than the Jiulianshan source.In addition, there were considerable differences in the polysaccharide content of Centella paliurus leaves with different phenotypic traits.Except for the leaves with different leaflet types, where the difference in polysaccharide content was not significant, differences between other types were significant.The main findings of this paper are as follows: This discrepancy suggests that the absorption at 500-550 nm may be influenced by other pigments or compounds, and further investigation is needed to confirm the specific flavonoid absorption profile.In fresh plant extracts, due to the absence of interfering substances in the absorption region of total flavonoids, the total flavonoid content can be accurately measured by determining the absorbance at an appropriate wavelength.However, the study should specify the exact wavelength used for measurement to ensure reproducibility.