Ivanytska B. Autoecological peculiarities of growth in plant species of Araceae Juss. family ex situ.

Dissertation is dedicated to the study of autoecological peculiarities of growth in plants of various ecomorphotypes belonging to Araceae Juss. family, aimed at preservation of their biological diversity ex situ. The study has established significant differences in plant development at different levels of ontogenesis. For epiphytic plants the ratio of the above-ground and underground part equals to one, for terrestrial plants and lianas this ratio is less than one. It has been proved that the distribution of monosaccharides and disaccharides, free amino acids, biogenic elements and photosynthetic pigments can serve as a diagnostic indicator when determining a plant's ecomorphotype. It has been suggested to use allometric index and allometric function of growth for analysis of exogenous factors' impact on growth processes in plants of different ecomorphotypes. The analysis of results has showed expediency of application of natural silicon-based minerals, organic acids and mineral fertilizers for intensification of physiological and biochemical processes as well as enhancement of productivity and decorative characteristics of plants belonging to different ecomorphotypes under controlled conditions. The concentrations of natural minerals which stimulate root and stem development of different life forms have been determined.