Abstract: The effects of different concentrations of NaHCO₃ and different stress time on plasma-membrane peroxide-tion and contents of osmoregulation substances of Sambucus coreana(Nakai)Kom.et Alis. leaves were studied using plotted experimentation. Dramatic increasing of malondialdehyde contents and relative electrical conductivity was detected with the increasing of NaHCO₃ concentration and treatment time, as well as the soluble protein contents; Marked increasing of proline and soluble sugar contents was detected with the increasing of NaHCO₃ concentration. Results suggested that there were relative jarless physiological responses of S. coreana(Nakai)Kom.et Alis. under lower NaHCO₃ concentration (1 g·kg^-1), as well as relative slight changing with increasing treatment time, so it could be planted in mild saline-alkali area.

Key words: Sambucus coreana(Nakai) Kom.et Alis., NaHCO₃ stress, plasma-membrane peroxidation, osmoregulation substances