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中国农学通报

中国农学通报 ›› 2012, Vol. 28 ›› Issue (25): 172-178.

• 林学 园艺 园林 • 上一篇    下一篇

不同盐度胁迫对芦荟生长和离子吸收分配的影响

马艳萍   

  • 收稿日期:2011-07-20 修回日期:2011-11-05 出版日期:2012-09-05 发布日期:2012-09-05

Effects of Salt Concentration on Growth, Ion Absorption and Distribution of Aloe Vera L.

  • Received:2011-07-20 Revised:2011-11-05 Online:2012-09-05 Published:2012-09-05

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摘要：

为探索芦荟对微咸水灌溉栽培的适应性，研究了不同盐浓度对其生长和离子吸收分配的影响。结果表明，长期（120天）以含盐溶液灌溉栽培，盐浓度达200 mmol/L NaCl显著抑制芦荟生长，100 mmol/L NaCl对芦荟生长的抑制作用显著减轻，50 mmol/L NaCl不抑制芦荟生长。同时，以50 mmol/L NaCl溶液灌溉对芦荟盐分离子吸收分配影响轻微，但盐浓度达100 mmol/L NaCl对芦荟影响显著：根、茎、叶中K+含量显著下降，Na+ 、Cl-含量显著增大，K+/Na+大幅减小。X-射线能谱分析结果进一步表明，叶片贮水组织是芦荟积累盐分离子的重要部位，但100 mmol/L NaCl胁迫下芦荟根尖和叶片细胞中的离子平衡受到显著干扰。结果说明，芦荟适于用微咸水灌溉栽培，叶片贮水组织在缓解其盐胁迫中可起重要作用。

关键词: 地理信息系统（GIS）, 地理信息系统（GIS）, 最低气温, 监测模拟, 地理因子, 自动气象站

Abstract:

To explore the adaptability of irrigating aloe with weakly brine water, the effects of different concentration salinity stresses on growth, ion absorption and distribution of aloe plants were investigated. Experimental results showed that irrigation with 200 mmol/L NaCl for 120 d significantly retarded aloe growth, but the negative effects of irrigating aloe with 100 mmol/L NaCl on aloe growth were significantly relieved, even irrigating with 50 mmol/L NaCl did not retard aloe growth. The effects of irrigating with 50 mmol/L NaCl on ion absorption, transportation and distribution of aloe plants were not significant, but irrigating with 100 mmol/L NaCl were significant: K+ contents of root, stem and leaf significantly decreased, Na+ and Cl- content significantly increased, K+/Na+ ratio significantly decreased. X-ray microanalysis results further showed that leaf aqueous was a main part of accumulating salt ion but ion homeostasis in root and leaf cells of aloe plants were significantly interrupted under 100 mmol/L NaCl stress. The experiment results suggested that Aloe vera L. was suitable to be irrigated with weakly brine water, and leaf aqueous tissue played important roles in the accumulating salt ion and alleviating salt stress.