Some considerations regarding the In Vitro culture of Rhodiola rosea L.

In vitro cultures of Rhodiola rosea were initiated and the morphogenetic reaction of several types of explants was tested in view of elaborating a micropropagation technique for this species, to provide in vitro regenerants for repopulating native habitats of R. rosea, where it has extinguished or is endangered It was ascertained that the most efficient variants of MS medium to provide neoplantlets from shoot nodes and apices are: N (2.0 mg l(-1) NAA), followed by hormone free MS, then KN (1 mg l(-1) Kin + 0.5 mg l(-1) NAA), and AZ (0.2 mg l(-1) IAA + 2 mg l(-1) zeatin). The in vitro regenerants transfer on Ceahlau Mountains (at 1750 meters altitude) proved that the achievement of our goal is possible.