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外源亚精胺对盐胁迫下黄瓜植株氮化合物含量和硝酸还原酶活性的影响
引用本文:张润花,郭世荣,樊怀福.外源亚精胺对盐胁迫下黄瓜植株氮化合物含量和硝酸还原酶活性的影响[J].武汉植物学研究,2006,24(4):381-384.
作者姓名:张润花  郭世荣  樊怀福
作者单位:南京农业大学园艺学院,南京,210095
基金项目:教育部高等学校博士学科点专项科研基金
摘    要:研究了外源亚精胺(Spd)在营养液栽培中,对盐胁迫下耐盐性不同的两品种黄瓜幼苗体内硝态氮、铵态氮、脯氨酸(Pro)含量和硝酸还原酶(NR)活性的影响。结果表明,外源Spd显著减小了盐胁迫引起的铵态氮、Pro含量的升高幅度和NR活性、硝态氮含量的降低幅度,且对盐敏感型黄瓜品种影响幅度较大。表明Spd可明显减缓盐胁迫对黄瓜幼苗氮素营养代谢的影响。

关 键 词:亚精胺  盐胁迫  黄瓜  硝态氮  铵态氮  硝酸还原酶
文章编号:1000-470X(2006)04-0381-04
收稿时间:2006-01-11
修稿时间:2006-01-112006-04-25

Effects of Exogenous Spd on NO3--N, NH+4-N Contents and Nitrate Reductase Activity of Salt Stressed Leaves and Roots of Cucumber Seedlings
ZHANG Run-Hua,GUO Shi-Rong,FAN Huai-Fu.Effects of Exogenous Spd on NO3--N, NH+4-N Contents and Nitrate Reductase Activity of Salt Stressed Leaves and Roots of Cucumber Seedlings[J].Journal of Wuhan Botanical Research,2006,24(4):381-384.
Authors:ZHANG Run-Hua  GUO Shi-Rong  FAN Huai-Fu
Affiliation:Department of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
Abstract:The effects of exogenous Spd on NO~-_3N,NH~ _4-N,Pro contents and NR activity of salt stressed leaves and roots of cucumber seedlings in hydroponic culture were studied.The results showed that exogenous Spd could reduce salt-stress-induced increase of NH~ _4-N,Pro contents and reduce decrease of NO~-_3-N contents and NR activity,and salt tolerant cucumber was less affected than salt sensitive cucumber.It is indicated that exogenous Spd could alleviate salt stress on cucumber seedlings.
Keywords:Spd  Salt stress  Cucumber  NO_3~--N  NH_4~ -N  Nitrate reductase(NR)  
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