Somatic embryogenesis and plant regeneration in zygotic embryo cultures of balloon flower

Mature zygotic embryos of balloon flower (Platycodon grandiflorum) formed embryogenic calluses at a frequency of 43% when cultured on Murashige and Skoog medium supplemented with 4.52 mu M 2,4-dichlorophenoxyacetic acid (2,4-D). Cell suspension cultures were established from embryogenic calluses using MS liquid medium with 4.52 mu M 2,4-D. Following transfer to solid MS basal medium, cell suspension cultures gave rise to somatic embryos, which then developed into plantlets. Plantlets were transplanted to potting soil and grown to maturity.