Abstract
Mass propagation of balloon flower (Platycodon grandiflorum) was achieved by subculturing shoot-sections and separated axillary shoots on MS based medium with cytokinin. A proliferation rate of 3.3 per 15-day culture period was achieved on the medium with 4.4 μM 6N-benzyladenine (BA) . The elongated shoots from these in vitro-cultured explants could be rooted on MS based medium with 0.49 μM 3-indolebutyric acid (IBA) . Most of the plants were successfully acclimatized and all of them flowered in a greenhouse.
