Zubtsova T. Biologic characters of the introduced rarity species of the Ukraine's south-eastern flora.

Thesis is devoted to the complex research on rare and endangered species of Ukraine's south-eastern flora in the course of their introduction. Specific features of the seasonal development rhythm of 174 rarity species were studied. It enabled us to determine terms of the beginning and durations of the main phenologic stages. The degree of dependence of these terms and durations on hydro-termal indeces was determined as well as the degree of correlation between phenologic stages. Peculiar characters of adaptation of the rarity volatile oil bearing plant species from the Lamiaceae family were studied on the example of the their basic oil-producing organs. There were found fewer volatile oil receptacles and smaller gynobase nectaries under the conditions of introduction. The research on seed sowing quality of the rarity species from the Lamiaceae family was carried out. The studied of local reproduction had different terms of storage. There was revealed a low seed productivity and a non-correspondence oftheir terms of falling off and seed germination to the regional meteorologic conditions the most complete correspondence of the seasonal development rhythms in the course of introduction was found to be characteristic of the rarity semi-dwarf shrub species, but on account of the reducing of their qualitative indeces.