In salt-free and saline media containing NaCl at the concentrations up to 1.0M, on the dry weight basis, the growth of a strain MY701 of Chlorella saccharophila, grown autotrophically, was promoted more significantly in 0.5M NaCl medium than in salt-free medium at 72hr-incubation. The highest growth rate was observed in 0.5M NaCl medium for during 24hrs from 48 to 72hr.
LiCl at 0.5M concentration did not stimulate significantly the growth rate as NaCl did. The promotion of the growth rate of this strain in 0.5M NaCl medium resulted from the enhanced photosynthetic rate associated with the increase in the respiratory rate.
When a strain TK66 of Chlorella vulgaris was used instead of the present material, this fact was not the case.