不同钠盐胁迫对高冰草种子萌发的影响  

Effect of Different Sodium Salt Stress on the Seed Germination of Tall Wheatgrass(Agropyron elongatum)

作　　者：黄立华[1] 梁正伟[1] 

机构地区：[1]中国科学院东北地理与农业生态研究所

出　　处：《干旱区资源与环境》2007年第6期173-176,共4页Journal of Arid Land Resources and Environment

基　　金：吉林省生态恢复与生态系统管理重点实验室项目(K09M6)

摘　　要：通过对高冰草种子在不同钠盐(NaCl、NaHCO3、Na2CO3)溶液中萌发情况的研究,旨在探明高冰草种子在不同盐胁迫下的萌发特性。结果表明:碱性盐(NaHCO3、Na2CO3)胁迫较中性盐(NaCl)胁迫显著降低了高冰草的发芽率。高冰草种子在NaCl浓度150mmol/L、NaHCO3浓度100mmol/L和Na2CO3浓度50mmol/L时萌发受到明显抑制。不同钠盐胁迫下高冰草种子胚根和胚芽的受抑制大小顺序为,中性盐NaCl胁迫:胚根<胚芽;碱性盐NaHCO3和Na2CO3胁迫:胚根>胚芽。The research aimed at seed germination characters of tall wheatgrass under different sodium salt stress.The results showed that the seed germination rateswere descended obviously under Na2CO3or NaHCO3stress than NaClstress.The seed germination was restrained when concentration of NaClwas 150mmol/L、 NaHCO3 was 100mmol/Land NaH2CO3was 50mmol/L.Under different sodium salt stress,length of radicleand length of plumuleof tall wheatgrass seed would be restrained.

关 键 词：高冰草 钠盐 胁迫 发芽率 胚根/胚芽长 

分 类 号：S543.9[农业科学—作物学]