In this study,15 accessions of Rhododendron germplasm resources were collected for in vitro conservation. The leaves of R. farrerae from Nine Seazan mountain were used as the explants for establishing the in vitro regeneration system. The plantlets from“erqiao”Rhododendro were applied as the conservation materials to investigate the restricting growth conservation method, which provided scientific basis for the Rhododendro and in-vitro preservation of compositae plants. 15 accessions of Rhododendro plants w...