首页 | 本学科首页   官方微博 | 高级检索  
     检索      

利用原子吸收光谱法分析盐胁迫对野生披碱草矿质元素吸收和积累的影响
引用本文:贾亚雄,孙蕾,何峰,万里强,袁庆华,李向林.利用原子吸收光谱法分析盐胁迫对野生披碱草矿质元素吸收和积累的影响[J].光谱学与光谱分析,2008,28(12).
作者姓名:贾亚雄  孙蕾  何峰  万里强  袁庆华  李向林
作者单位:1. 中国农业科学院北京畜牧兽医研究所,北京,100094
2. 中国农业科学院植物保护研究所,北京,100094
基金项目:基本科研业务费专项研究基金,国家科技支撑计划 
摘    要:应用原子吸收光谱法测定了两份耐盐性不同的野生披碱草种质材料在不同盐浓度胁迫条件下根组织和叶组织中的大量元素(Na,K,Ca,Mg)和微量元素(Cu,Fe,Mn,Zn)含量,并对野生披碱草种质材料矿质元素吸收和积累的选择性与耐盐性的关系进行了分析,结果表明:随着盐胁迫浓度的升高,野生披碱草种质材料叶和根组织中Na含量不断增加,耐盐材料HS叶组织中的Na含量显著低于敏盐材料LS(P<0.05);而K和Ca含量呈下降的趋势,在高浓度盐胁迫下,耐盐材料HS中两种元素的含量显著高于敏盐材料LS(P<0.05);微量元素Fe和Zn在野生披碱草材料根、叶组织中的含量升高,Cu在根组织中的含量没有变化,但是在叶组织中升高,而Mn在根、叶组织中的含量都呈下降的趋势,耐盐材料HS叶组织和根组织中Zn和Fe含量低于敏盐材料LS,Mn含量显著高于敏盐材料LS(P<0.05)。

关 键 词:原子吸收光谱法  披碱草  元素  吸收

Analysis of Effects of Salt Stress on Absorption and Accumulation of Mineral Elements in Elymus Spp. Using Atomic Absorption Spectrophotometer
JIA Ya-xiong,SUN Lei,HE Feng,WAN Li-qiang,YUAN Qing-hua,LI Xiang-lin.Analysis of Effects of Salt Stress on Absorption and Accumulation of Mineral Elements in Elymus Spp. Using Atomic Absorption Spectrophotometer[J].Spectroscopy and Spectral Analysis,2008,28(12).
Authors:JIA Ya-xiong  SUN Lei  HE Feng  WAN Li-qiang  YUAN Qing-hua  LI Xiang-lin
Abstract:Salinization contributes significantly to soil degradation and the growth and survival of plants.A high level of salts imposes both ionic and osmotic stresses on plants,resulting in an excessive accumulation of sodium(Na) in plant tissues.Na toxicity disrupts the uptake of soil nutrients.Plant uptake and absorption of macro-elements under salt stress have been studied in plants,but there is little literature addressing the effect of salt stress on plant accumulation and absorption of micro-elements.Species in Elymus genus are among the most important forage plants on high-salinity soils in China.An experiment was conducted to study the effect of salt stress on accumulation and absorption of both macro-and micro-elements by wild plants of Elymus genus.Plant samples taken from two populations with different salt tolerance were tested and the level of 4 macro-elements,namely Na,K,Ca and Mg,and 4 microelements,namely Cu,Fe,Mn,Zn was determined using atomic absorption spectrophotometer.The relationship between the selection of elements in the process of absorption and accumulation and salt tolerance was also analyzed.The results showed that the level of Na in root and leaf tissues increased with increasing salt stress.The level of Na in leaf tissue of plants with high salt tolerance(HS) was significantly higher than that in plants with low salt tolerance(P<0.05).The level of K and Ca decreased in response to increasing salt stress,while that in HS was higher than in LS.The level of Fe and Zn in the tissues of both roots and leaves increased.No significant difference was detected between HS and LS samples in the level of Cu in root tissues,while that of Cu in leaf tissue of both samples increased.The level of Mn decreased with increasing salt stress,but was higher in HS than in LS.Fe and Zn in roots and leaves of HS were lower than in those of LS.
Keywords:Atomic absorption spectrophotometer  Elymus spp  Element  Absorption
本文献已被 CNKI 维普 万方数据 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号