Measurement of rutin and quercetin flavonoids in leaves of different Mangifera indica L. genotypes in southern Iran
Mangifera indica L. belongs to the Anacardiaceae family. The various organs of this plant, especially the leaves, contain valuable flavonoid compounds that are used in the treatment of diabetes. In the present study, to evaluate the amounts of rutin and quercetin in the leaves of different M. indica genotypes in the habitats of southern Iran, four major habitats including Manoojan and Roodan from Kerman province, Minab from Hormozgan province, and Bushehr port from Bushehr province were selected. From each habitat, 10 mature and healthy trees were selected and from each tree, three groups of leaf samples were taken from a height of two meters. Extraction of dried mango leaves was performed by methanol-acetic acid solvent and injected into HPLC for analysis. The amounts of rutin and quercetin in 40 samples of M. indica extracts were determined. Data were analyzed in a completely randomized design using SPSS statistical software and cluster analysis was performed by Ward method to group the populations and genotypes. There was a statistically significant difference (P <0.05) between the four M. indica populations in terms of both rutin and quercetin. The highest levels of rutin and quercetin were obtained in Manoujan (124.03 ppm) and Bushehr (6.05 ppm) populations, respectively. Cluster analysis divided the four populations into three independent groups: populations Rudan and Minab in group 1, Bushehr in group 2, and Manoujan in group 3. Evaluation of phytochemical diversity can provide valuable information in the management of M. indica germplasm and be useful in identifying suitable populations for different breeding purposes in this species.
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