Abstract: The suspension cells of Panax ginseng which had been filtrated, were treated with mutagenic compound, N-methyl-N'-nitro-N-nitrosoguanidine at 2 mmol / L, for 1 hour. Cell viability was remarkablely decreased and the formation of cell clone was only 10.12 of control. Cells treated were plated on a nutrient agar medium. More than 150 clone lines were obtained af-ter plating culture of 60 days, of which many clone lines grew slow or stopped growing and died during transplantation culture.

Key words: Panax ginseng