Abstract
It is shown that aqueous extracts from bird cherry tree Padus avium L., aspen Populus tremula L., and celandine Chelidonium<br />majus L., effectivily suppress the germination of Puccinia triticina Eriks uredospores. Fungitoxic activity of<br />the extracts is supposed to be determined by high content of phenolic compounds and high peroxidase activity in the<br />leaves of these plants. Fungitoxic activity of the extracts from the leaves, inflorescences, roots, and stems of siberian<br />cowparsnip Heracleum sibiricum L., was also correlated with the content of phenolic compounds in these organs. Treatment<br />of healthy wheat Triticum aestivum L., cv. Lyubava, with the extracts from common comfrey Symphytum officinale<br />L., cowparsnip Heracleum sibiricum L., and giant knotweed Reynoutria sashalinensis (F. Schmitt) Nakai, stimulated the<br />photosynthetic activity in treated leaves.
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