盐碱胁迫下西伯利亚蓼体内无机离子的变化  

The location patterns of inorganic ions in different parts of Polygonum sibiricum under salt and alkaline stress condition

作　　者：吕艳芳[1] 王大海[2] 刘关君[3] 杨传平[3] 周颖[1] 

机构地区：[1]渤海大学生物与食品科学学院,辽宁锦州121000 [2]中国林科院林业研究所,北京100091 [3]东北林业大学森林资源与环境学院,黑龙江哈尔滨150040

出　　处：《广西植物》2006年第3期304-307,共4页Guihaia

基　　金：国家重大基础研究发展规划项目(G19999016003)~~

摘　　要：研究了碳酸氢钠溶液处理后西伯利亚蓼营养器官内部无机离子含量的变化。实验结果表明碳酸氢钠溶液处理前西伯利亚蓼茎部认为是“K+库”;碳酸氢钠溶液处理过程中“K+库”转变成为“Na+库”,以维持叶部的正常生理功能,并且“Na+库”具有一定的限度;碳酸氢钠溶液处理后,西伯利亚蓼不同部位对外界盐碱胁迫的反应存在多样性。植株在“Na+库”达到限度之前进行旺盛的光合作用,在有限的时间内向地下组织输送更多的有机养分,用以繁殖后代。In this paper, the changing patterns of inorganic ions content,in different parts of Polygonurn sibiricum,were investigated under salt and alkaline stress condition. The results showed that, the diversity of response to salt and alkaline stress was presented in different parts of the plant ; Under normal environment, the stem could be seen as a K^＋ reservoir and turned into a Na^＋ reservoir after treated by NaHCO3 solution which could reduce the concentration of Na^＋ in leaf tissues and maintain its physiological functions; The plant use the limited time to ship out photosynthesls,aiming at accumulating of more organic nutrient and transfer it to underground tissues for propagation before the Na^＋ reservoir reach its capacity, which has its upper limit.

关 键 词：西伯利亚蓼 盐碱胁迫 Na^+库 K^+库 繁殖后代 

分 类 号：Q945.78[生物学—植物学]