Abstract
The maximum growth of S.salsa (L.) pall was attained at both 50 and 100mM NaCl. To evaluate the cause of growth stimulation by a high concentration of NaCl, the growth responses to -Na-Cl, -Na+Cl, +Na-Cl, +Na+Cl treatments were compared. The growth stimulation occurred in the treatments with -Na+Cl, +Na-Cl and +Na+Cl at both 5mM and 50mM compared with -Na-Cl treatment. However, growth stimulation induced by Cl was larger than Na. The effect of Na or Cl on the O2 evolution from leaves was studied with an oxygen electrode. O2 evolution from leaves per unit dry weight of organic matter in +Cl treatments was larger than that in -Na-Cl. That in +Na treatment was similar to that in -Na-Cl. These results suggested that growth stimulation induced by a high concentration of NaCl might be partly caused by the increased light reaction in photosynthesis of leaves with Cl application.
