不同盐处理对盐地碱蓬幼苗肉质化的影响.pdfVIP

植物学通报 2005, 22 (2): 175~182 Chinese Bulletin of Botany 实验简报 不同盐处理对盐地碱蓬幼苗肉质化的影响① 1,2 2 2 ② 綦翠华 韩 宁 王宝山 1(济南大学 济南 250002) 2 ( 山东师范大学生命科学学院 济南 250014) 摘要 用不同的钠盐和含Cl-的盐处理盐地碱蓬(Suaeda salsa)幼苗后, 测定不同器官的肉质化及相关 生理指标，结果表明：NaF 处理明显抑制盐地碱蓬幼苗的生长；NaCl处理下生长最好，其中叶片的肉 质化程度显著高于对照，正在伸展茎次之，而根则不明显；其次是NaHCO ，肉质化程度也明显高于 3 对照；CaCl 和KCl处理下肉质化程度都与对照相似；MgCl 处理下叶片的肉质化程度明显低于对照。 2 2 这些结果表明，NaCl 处理明显促进盐地碱蓬肉质化是Na+ 和Cl-两种离子作用的结果，而Na+ 起主导 - 2+ 作用；在这个过程中，HCO3 有一定的作用，Mg 抑制肉质化。 关键词 盐地碱蓬，肉质化，盐处理，离子作用 Effect of Different Salt Treatments on Succulence of Suaeda salsa Seedlings 1,2QI Cui-Hua 2HAN Ning 2WANG Bao-Shan② 1(Ji ’nan University , Ji ’nan 250002) 2 ( College of Life Science, Shandong Normal University , Ji ’nan 250014) Abstract 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 CaCl and KCl. In contrast, MgCl treatment significantly decreased 2 2 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 suc