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机构地区:[1]济南大学,济南250002 [2]山东师范大学生命科学学院,济南250014
出 处:《植物学通报》2005年第2期175-182,共8页Chinese Bulletin of Botany
基 金:国家自然科学基金(30270793);国家"863"计划(2001AA244081)资助
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NaHCO3,肉质化程度也明显高于对照;CaCl2和KCl处理下肉质化程度都与对照相似;MgCl2处理下叶片的肉质化程度明显低于对照。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+起主导作用;在这个过程中,HCO3有一定的作用,Mg2+抑制肉质化。-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.
关 键 词:盐地碱蓬 盐处理 肉质 幼苗 NACL处理 NaHCO3 HCO3^- Cl^- Na^+ CaCl2 MGCL2 MG^2+ 生理指标 主导作用 对照 NaF KCl 生长 抑制 叶片 茎
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