The age structure of Erythronium sibiricum (Liliaceae) in artificial phytocenosis

The research objective consisted in studying of age structure of Erythronium sibiricum in artificially created cenopopulation for efficiency and the fore-cast of its successful introduction to culture. The object of the research was Erythronium sibiricum (Fisch. et C.A. Mey.) Krylov Siberian Сandy. The examination was conducted in April - June, 2016 in vicinities of Central Siberian botanical garden in the district about the floodplain of the river of Zyryank throughout 150-200 m on the right side on the cur-rent, to its confluence with the artificial lake with the southern slope adjoining to it with the dismembered microrelief where more than 50 years ago early-spring efemeroida from natural habitats of Kuznetsk Alatau were created. We investigated the age structure of E. sibiricum. The features of ontogenet-ic range of cenopopulation of rare endemic species of Erythronium sibiricum are given in the artificial phytocenosis created in the vicinity of Central Sibe-rian botanical garden about 50 years ago. The on- togenetic range is based on the idea of types of range of L.B. Zaugolnova. Ecological density is de-termined proceeding from the number of individuals on the unit of manned space according to Yu. Odum. It was established that an ontogenetic range of Erythronium sibiricum was left-side, with the prevalence of individuals of the virginal period. Their number was 20-30 times higher than the number of generative individuals. Cenopopulation on its type is young. Self-maintenance is resumed in the seed way. In an ontogenetic range at most it is necessary on individual of a juvenile state. In general it is noted that on an individual of the pregenerative period 85.5 % are necessary, 36.5 % make juvenile plants of them. Individuals of the generative period there were 14.5 %. The conclu-sion is that the success of the introduction of the experiment and the possibility of preservation of the species through the creation of micro-climatic con-ditions when introducing it into the culture.