Abstract: This study evaluated shoot organogenic potential of 14 genotypes of Chinese cabbage (Brassica campestris L. ssp. pekinensis) , the regeneration frequency varied significantly. The genotype which had maximum shoot regeneration was chosen for investigating the op timum concentration of 6-BA or TDZ on shoot
regeneration. The maximum frequency of shoot regeneration was obtained respectively in the mediums: MS + 6-BA 5 mg/L +NAA 0.5 mg/L +AgNO₃ 2 mg/L and MS + TDZ 0.1 mg/L + 6-BA 5 mg/L +NAA 0.5 mg/L +AgNO₃ 2 mg/L + ABA 0.25 mg/L, and the highest frequency of shoot regeneration ( 90.6%) was
achieved on the latter medium. In this research, The determine factors influencing shoot regeneration and strategies to establish efficient regeneration system of Chinese cabbage are discussed.

Key words: Chinese cabbage, Genotype, 6-BA, TDZ, ABA