“…Nutrient media was used for cultivation as described by Murashige and Skoog (MS) (Murashige et al, 1962), medium WPM (Lloyd et al, 1980), and also medium SCS (Kritskaya et al, 2015). This medium with a set of growth regulators (BA 0.2 mg / l + GA 3 1.0 mg / l + KIN 1.0 mg / l + IAA 0.5 mg / l) is used as a nutrient medium for the rare calcephilic plants reproduction obtained by di-rect organogenesis in an in vitro culture (Kritskaya et al, 2015(Kritskaya et al, , 2016. Vitamins and amino acids were added as prescribed by MS. Sucrose was used at a concentration of 2 % in WPM and SCS medium as a carbon nutrition source, in MS medium -3 %; in other medium -agar 0.8 %.…”