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硅对盐胁迫下枣树根尖离子微域分布的影响(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2006年02期
Page:
85-88
Column:
研究论文
publishdate:
2006-02-20

Article Info:/Info

Title:
Effects of Silicon on Ion Micro-distribution Status of Ziziphus jujuba cv. Jinsixiaozao Under Salt Stress
Article ID:
1000-2006(2006)02-0085-04
Author(s):
XU Xi-zeng1 XU Cheng-xiang2
1. College of Forest Resources and Environment Nanjing Forestry University, Nanjing 210037, China; 2. Department of Horticulture Jinling Institute of Technology, Nanjing 210038, China
Keywords:
Silicon Salt stress Ziziphusjujuba cv. Jinsixiaozao Ion micro-distribution X-ray electron probe
Classification number :
S718.43
DOI:
10.3969/j.jssn.1000-2006.2006.02.021
Document Code:
A
Abstract:
The effects of silicon on ion micro-distribution status of root tips in Ziziphus jujuba cv. Jinsixiaozao under salt stress were studied with X-ray electron probe mieroanalysis. The results showed that the peak of Na+and C1-in the cells of the epidermis, cortex and stele under 0.3% NaC1 stress was higher while that of K+was lower. However, after the addition of silicon (0.4 g/kg) to the stressed plants, the contents of Na+and C1-in those cells decreased remarkably while that of K+increased significantly. Moreover, Na+and C1-were distributed uniformly in all tissues of roots. It indicated that the addition of silicon under salt stress ameliorated the ion imbibtion and the ion micro-distribution status, therefore, it alleviated the toxic effects from salt ions.

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Last Update: 2013-05-20