Abstract: Two wheat cultivars(Lumai-14 and Jinhan-47) with different drought-tolerance were treated with NaCl solutions. Effects of NaCl stress on growth and content of several solutes of seedlings were studied. Results showed that NaCl treatment caused a decrease in length of shoots and roots of wheat seedlings, and the degree of decrease was higher in drought-tolerance cultivar(Jinhan 47) than in drought-sensitive one(Lumai-14). Na⁺ contents increased slowly and Na⁺-exclusion capability in shoots and roots of Jinhan-47 was stronger than that of Lumai-14. Furthermore, higher proline and aminonitrogen contents, a smaller decrease in NO₃^- contents and a relative stability of K⁺ contents in roots of Jinhan-47 were found. These suggests that salt-tolerant ability of Jinhan-47 is much stronger than Lumai-14.

Key words: Wheat, NaCl treatment, ionic content, drought-tolerance, salt tolerance