Features of propagation by seeds of rare and endangered plant species in culture

The article is devoted to the conservation of rare and endangered species in a culture The problems and features of reproduction by seeds of these species were been considered. The stages were been distinguished – preparatory (informational), seed collection, drying, peeling, storage, germination, genetic identification. Approaches to seed collection and storage were been presented. It is proposed to use a refrigeration chamber (+ 4 ° C) for long-term storage of seeds.

In vitro propagation of endemic species Hedysarum chaiyrakanicum (Tuva Republic, Russia) and its widespread congener, H. gmelini (Fabaceae)

A rare species Hedysarum chaiyrakanicum and a highly polymorphic species H. gmelini were first introduced into in vitro culture. It was shown that MS supplemented by 5 µM BAP is optimal medium for micropropagation of H. gmelini from 90-1 and 92-1 subpopulations, medium with 1 µM BAP is optimal for micropropagation of H. chaiyrakanicum from 45-2 subpopulation, and 10 µM BAP – for H. chaiyrakanicum from 45-1 subpopulation. Seedlings obtained from the seeds of H. gmelinii collected from the subpopulation no. 88 demonstrated a higher tendency to callus formation using BAP. It was also found that in vitro culture of H. chaiyrakanikum was characterized by a higher reproduction rate then H. gmelinii in vitro culture.