NaCl处理对不同黄瓜品种幼苗生长发育的影响

以“津杂”、“津优”和“津春”系列10个黄瓜品种为试材,通过NaCl胁迫,研究不同黄瓜品种之间的耐盐性差异.结果表明:种子的发芽率不仅随着黄瓜耐盐性的不同而异,而且也依盐溶液浓度的变化而发生变化；浓度为0.1％的盐溶液对种子发芽率无影响,浓度为1％的盐溶液显著影响黄瓜种子的发芽率；盐胁迫还明显提高幼苗叶片的相对电导率、降低叶片和根系的相对含水量,其中经盐胁迫后黄瓜幼苗的相对电导率增加50％～100％.

Effect of Seedling Growth of NaCl Stress on Different Cucumber Species

’Jinza’,’Jinyou’,’Jinchun’ series of 10 cucumber varieties were used as test material,the differences in salt tolerance of the different varieties of cucumber under NaCl stress were studied.The results showed that seed germination rate was not only with the cucumber salt tolerance varies,but also by changes in salt concentration changes.Concentration of 0.1% saline solution had no effect on seed germination rate,the concentration of 1% salt solution significantly affected the germination rate of cucumber seeds.Salt stress also significantly increased the relative conductivity of seedling leaves,reduced the relative water content in leaves and roots.After salt stress,which by the relative conductivity of cucumber seedlings increased by 50% to 100%.