[St. John's wort cultivation in Switzerland]
1997
Kartnig, T. (Karl-Franzens-Universitaet Graz, Graz (Austria). Institut fuer Pharmakognosie) | Heydel, B. | Laesser, L. | Debrunner, N.
The contents of hypericin, pseudohypericin, flavonoidglycosides, and biflavonoids in the aerial parts of the Hypericum perforatum cultivar TOPAS, cultivated in the RAC Centre des Fougeres, Switzerland, were investigated in particular ontogenetic phases. The study showed that the cultivar TOPAS grows very well under the given conditions of the canton of Wallis. The highest amount of hypericins could be seen at the time of full blooming, that of flavonoids and biflavonoids before the beginning of blooming. The distribution of hypericins and flavonoids in the aerial parts during ontogenesis is described
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