Journal of Food, Agriculture and Environment

Investigation of the most important secondary metabolites of St. John’s wort (Hypericum perforatum L.) in Caspian climate

Author(s):

Aptin Rahnavard ¹*, Jahanfar Daneshian ², Eslam Majidi Heravan ³,  Seyed Alireza Valadabadi ⁴, Behrooz Golein ⁵

Recieved Date: 2012-01-08, Accepted Date: 2012-05-04

Abstract:

Hypericum perforatum L. is one of the important medicinal plants in worldwide, growing wild in Iran in various areas and altitudes, particularly Caspian climate. In order to define its best vegetated area, the most important biochemical components: hypericin, total phenol, flavonoid, carotenoid and chlorophylls were sampled and analyzed. The five regions of Caspian climate ecotypes were studied in three heights. The samples were recorded geographically, and then analyzed. Results showed that there is a positive correlation between the amount of hypericin and total phenol in the ecotypes. In the middle of height of Kelardasht area (700-1200 m) the highest concentration of hypericin and total phenol were measured. Nevertheless, due to the significant interaction between the factors mentioned, Hypericum perforatum grown in the high altitude of Kelardasht had the highest hypericin and total phenol. These results of flavonoid were similar to the results of hypericin and total phenol. However, due to the significant interaction effects, flavonoid had greatest concentration at the low-altitude ecotypes of Kelardasht. The highest amount chlorophyll a and b was measured at the middle-altitude of Javaherdeh region. There was no significant interaction between height and vegetated area. The evaluating of changes for some soil elements in the soil samples revealed that highest accumulation was at the height of 1186 m in Kelardasht with potassium (0.46%), magnesium (0.14%) and cadmium (1 ppm). The greatest hypericin was in this height, too. The highest phosphorus concentrations were measured in the Harris area (in the height of 349 m).

Keywords:

Hypericum perforatum L., secondary metabolites, Caspian climate, soil nutrition

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Journal: Journal of Food, Agriculture and Environment
Year: 2012
Volume: 10
Issue: 2
Category: Agriculture
Pages: 375-381

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