Effect of Different Salt Treatments on Succulence of Suaeda salsa Seedlings

This paper describes the succulence of organs of Suaeda salsa seedlings treated with different salts. The growth of the seedlings was markedly enhanced by NaCl but markedly inhibited by NaF treatment. The degree of succulence was the greatest in leaves, second in stems and third in roots of seedlings treated with NaCl. Compared with NaCl treatment, NaHCO₃ treatment induced a significant leaf succulence, but there were no obvious succulence appeared in seedlings treated with CaCl₂ and KCl. In contrast, MgCl₂ treatment significantly decreased leaf succulence. Succulence of S. salsa seedlings induced by NaCl treatment was resulted from the interaction of Na⁺ and Cl⁻, and Na⁺ played a major role. HCO₃⁻ played a weak role in succulence, but Mg²⁺ produced a negative role in succulence.