中文摘要：

在这研究，是否盐(NaCl ) 的效果水力的电导率(Lp ) 经由渗透的压力或离子毒性的房间上的应力并且 abscisic 酸(骆驼毛的织物) 是否能释放盐不利效果被测试。根上的 NaCl 和骆驼毛的织物的立即的效果玉米(Zea mays L.) 的外皮的房间 Lp 被为至少 1 h 与一根房间压力探针在水交换(T1/2 ) 和单个单个房间的 turgor 的半时间测量变化检测。结果显示出那 NaCl (50 公里) 的逐步的增加显著地(P < 0.01 ) 减少了水渗透。50 公里 NaCl 的一步舞增加甚至更急速地减少了 Lp。骆驼毛的织物不能即刻地颠倒盐压力导致的低水渗透。NaCl，甘露糖醇和山梨糖醇的长期的效果，和 Lp 上的骆驼毛的织物被测量 6 天。与 0.25 MPa 的一样的渗透的力量， NaCl 和甘露糖醇和山梨糖醇的混合物显著地在处理的早阶段减少了 Lp。在 salinized 房间的拒绝的 Lp 逐渐地并且部分在 2 天以后恢复了，而有甘露糖醇和山梨糖醇混合处理的 Lp 都是禁止的时间。与长期的处理，骆驼毛的织物(500 nM ) 显著地(P < 0.01 )对待 NaCl 的房间的增加的 turgor 和 Lp。一般来说， NaCl 减少了玉米根的水渗透由一个渗透的压力最可能的外皮的房间。骆驼毛的织物不能即刻地改变外皮的房间使遭到了到 NaCl 应力的玉米根的水渗透；与长期的处理，然而，骆驼毛的织物能部分地由渗透的调整多半减轻盐压力。

英文摘要：

In this study, whether the effect of salt （NaCI） stress on cell hydraulic conductivity （Lp） is via osmotic pressure or ion toxicity and whether abscisic acid （ABA） can release the salt adverse effect were tested. Immediate effects of NaCI and ABA on root cortical cell Lp of maize （Zea mays L.） were detected by measuring changes in half time of water exchange （T1/2） and turgor of individual single cells with a cell pressure probe for at least 1 h. The results showed that stepwise additions of NaCl （50 mM） significantly （P〈 0.01） reduced the water permeability. One-step addition of 50 mM NaCI even more drastically decreased Lp. ABA was not able to instantaneously reverse the low water permeability induced by the salt stress. Long-term effects of NaCl, mannitol and sorbitol, and ABA on Lp were measured for 6 days. Both NaCI and a mixture of mannitol and sorbitol, with the same osmotic strength of 0.25 MPa, significantly reduced Lp at the early stage of the treatments. The declined Lp in the salinized cell gradually and partially recovered after 2 days, whereas the Lp with the mannitol and sorbitol mixture treatment was all time inhibited. With long-time treatment, ABA （500 nM） significantly （P 〈 0.01） increased turgor and Lp of the NaCl- treated cells. In general, NaCl reduced water permeability of corn root cortical cells most likely by an osmotic stress. ABA could not instantaneously change water permeability of the corn root cortical cell subjected to NaCI stress; however, with long-time treatment, ABA was able to in part relieve the salt stress likely by osmotic adjustment.