Coenopopulations (CP) of Bupleurum aureum Fisch. ex Hoffm. at the border of the range in the Republic of Tatarstan were studied. The effect of weather and climatic conditions on the formation of phytomass, the development of the reproductive system of individuals, formation of the ontogenetic structure and the productivity of the species were studied. Well-defined processes of sexual reproduction and the rapid development of plants on the illuminated edges and forest glades contributed to the formation of normal young cenopopulations. The ontogenetic spectra were characterized as full-membered, with a maximum in plants of the pre-generative and the mature generative ontogenetic stages. When light levels decrease under the forest canopy, plant development slows down. Multi-shoot plants of B. aureum, which form an implicit-polycentric biomorph, were studied. The formation of adventitious roots provided morphophysiological autonomy of vegetative-generative shoots, which made it possible to consider them as counting units in determining the productivity of the natural populations based on the method of model specimens. Based on the stability in the development of the reproductive system and high phytomass indicators in various conditions, the territory of the Republic of Tatarstan is recommended for the creation of plantations.
Dubrovnaya et al. (Wed,) studied this question.