Hnatiuk N. Ecological alelopatic properties of aromatic plant species of Monarda didyma L., Dracocephalum moldavicum L., Hyssopus officinalis L.

The thesis is devoted to systematic research of alelopatic activity of exometabolites of aboveground and underground bodies and soil, as well as phytoremedic ability of plant species - double Bee balm (Monarda didyma L.), hyssop drug (Hyssopus officinalis L.), dracocephalum Moldavian (Dracocephalum moldavicum L.). Disclosure of environmental features of the synthesis of biologically active substances and the aftereffect of these types of soil and climatic conditions of northern and central forest-steppe of Ukraine is done. For the first time ever an assessment of ecological alelopatic activity of exometabolites of rare species of aromatic plants during the growing season is given. A high alelopatic activity of aromatic production waste is defined. Patterns of accumulation and release of the secondary synthesis of compounds - flavonoids, hydroxy-cinnamic acids into the environment depending on the abiotic environmental factors (precipitation, temperature) are established. A promising study of essential oils because of their high activity for the formation of plant phytocenosis is shown. The estimation of phytoncidal activity of plants exometabolites is given. The biggest number of microorganisms in soil during after harvest period under researched ether-oil cultures has been studied.. Phytoremedic ability of species in relation to organochlorine pesticides (DDT), depending on the initial level of soil contamination by these compounds is discovered.