Possibilities of growth and development suppression of Seimatosporium hypericinum (ces.) Sutton on artificial media and Hypericum perforatum L.

B.ZIMOWSKA

Abstract

Biological activity of chitosan in the form of microcristalline gel of hydrogel, as well as the activity of grapefruit extract were evaluated in vitro by means of measuring the groeth inhibition and formation of morphological structures of four isolates of Seimatosporium hypericinum obtained from stems and leaves of St.Jhon's wort (Hypericum perforatum).
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