2024年7月26日 星期五
NaCl胁迫对不同种源青钱柳幼苗离子分配、吸收与运输的影响
Effects of NaCl stress onion distribution, absorption and transportation in Cyclocarya paliurus seedling from different provenances
2007年 第16卷 第4期 页码[29-33]    下载全文[0.8MB]  
摘要

采用水培法研究了NaCl胁迫对不同种源青钱柳〔Cyclocarya paliurus(Batal.)Iljinskaja〕幼苗各部位离子分配、吸收与运输的影响。结果表明,0.085mol·L-1NaCl胁迫28d后,来源于安徽黄山的青钱柳幼苗根、茎、叶片及叶柄中的Na+/Ca2+和Na+/K+比值均最小;相同NaCl浓度胁迫下,3个种源青钱柳幼苗各部位的Na+/Ca2+比值较稳定。随NaCl浓度的升高,青钱柳幼苗从根系到茎的离子选择性运输能力提高,从叶柄到叶片的K+和Ca2+的离子选择性运输能力下降。综合分析结果表明,安徽黄山种源青钱柳幼苗的耐盐性高于云南昆明种源和江西九江种源。

Abstract

Effects of NaCl stress on ion distribution, absorption and transportation in all organs of Cyclocarya paliurus(Batal.) Iljinskaja seedling from different provenances were studied by water culture method. The results showed that ratios of Na+/Ca2+ and Na+/K+ in root, stem, leaf and petiole of seedling from Huangshan of Anhui Province were the lowest with 0.085mol·L-1 NaCl stress for 28d.The ratio of Na+/Ca2+ was more stable than that of Na+/K+ and Na+/Mg2+ in all organs of seedling from three provenances under the NaCl stress with same concentration. Ability of selective transportion of K+, Ca2+ and Mg2+ from root to stem was improved with NaCl concentration increasing, while that of K+ and Ca2+ from petiole to leaf was decreased gradually. It is concluded that the salt resistance of C. paliurus seedling from Huangshan of Anhui Province is better than that of provenances from Kunming of Yunnan Province and Jiujiang of Jiangxi Province.

关键词青钱柳; NaCl胁迫; 离子分配; 离子吸收; 离子运输;
Key wordsCyclocarya paliurus(Batal.)Iljinskaja; NaCl stress; ion distribution; ion absorption; ion
作者李彦强1,方升佐1, ,姚瑞玲1,赵丽霞2
所在单位1.南京林业大学森林资源与环境学院,江苏南京210037; 2.江西食品研究所,江西南昌330029
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基金项目国家自然科学基金资助项目(30371156); 江苏省高新技术研究计划项目(BG2006314);