Онтогенетическая структура ценопопуляций Delphinium pubiflorum (Dc.) Тurcz. еx Huth

Abstract

We conducted a study of the ontogenetic structure of six cenopopulations of the rare species Delphinium pubiflorum (DC.) Turcz. ex Huth. Three of them are located in the territory of the Saratov region, three – in the Ulyanovsk region. In all studied populations of D. pubiflorum, a group of young generative individuals predominate. All populations are normal incomplete. Populations from the Saratov region, studied for several years, are equilibrium. Ontogenetic spectra of the majority of populations with one maximum on young generative individuals. The base spectrum is centered, with a maximum on young generative individuals. Populations from the Ulyanovsk region are ripening. Populations from the Saratov region in some years show themselves mature, in other years are ripening. None of the populations in modern conditions is not capable of self-restoration.