【摘要】 为了研究中性盐胁迫和碱性盐胁迫下芸豆幼苗叶片的脂质过氧化程度、可溶性糖和离子含量，试验采用耐盐碱性较强的芸豆品种“HYD”为试验材料，分别用不同浓度NaCl和NaHCO₃(0,50,100,150 mmol·L^-1)模拟中性盐和碱性盐环境对芸豆进行不同时间的盐碱胁迫（0,24,96 h）。分别对MDA含量、可溶性糖含量、离子浓度进行测定。结果表明：随着NaCl和NaHCO₃胁迫浓度的升高，芸豆幼苗叶片中的膜脂造成氧化损伤的程度呈现递增的趋势，尤其是当处理浓度大于50 mmol·L^-1时上升幅度更加明显；芸豆幼苗叶片中的可溶性糖含量随着胁迫浓度的递增呈现出先升高后降低的趋势，在浓度为100 mmol·L^-1时，可溶性糖含量达到最大值；两种盐胁迫下芸豆幼苗叶片中K⁺/Na⁺变化相同，随着处理浓度的增加均显著降低，NaHCO₃处理的K⁺/Na⁺下降程度更大。更多还原

【Abstract】 In order to study the degree of lipid peroxidation,soluble sugar and ion content in the leaves of common bean under neutral salt stress and alkaline salt stress,soluble sugar and Ion content,HYD undefined,a common bean variety with strong saltalkali tolerance was used in the experiment,the neutral salt and alkaline salt environment were simulated by different concentrations of NaCl and NaHCO₃(0,50,100,150 mmol·L^-1),respectively.The common bean was subjected to different time saline-alkali stress（0,24,96 h,）.The results showed that with the increase of NaCl and NaHCO₃concentration,the degree of oxidative damage caused by membrane lipids in cowpea seedling leaves showed an increasing trend,especially when the treatment concentration was greater than 50 mmol·L^-1,the increase was more pronounced.The soluble sugar content in the leaves of common bean seedlings increased first and then decreased with increasing stress concentration.Maximum soluble sugar content at a concentration of 100 mmol·L^-1,The changes of K⁺/Na⁺in the leaves of cowpea seedlings under the two salt stresses were the same,and they all decreased with the increase of the treatment concentration.The NaHCO₃treatment showed a greater decrease in K⁺/Na⁺.更多还原