Effects of Exogenous Spd on NO3--N, NH+4-N Contents and Nitrate Reductase Activity of Salt Stressed Leaves and Roots of Cucumber Seedlings
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

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.