NaCl胁迫下野生大豆生理生态反应的研究

为明确野生大豆的耐盐性及其在盐胁迫下的生理生态反应规律,用NaCl溶液模拟盐胁迫处理野生大豆幼苗,分析了不同胁迫程度和胁迫时间下相关指标的变化.结果表明:低浓度盐胁迫对其生长无显著影响,但随着胁迫浓度的增加和胁迫时间的延长,其鲜重的增加速率逐渐降低,植物组织含水率降低,根冠比增加,可溶性糖含量先大幅增加后稍有降低,可溶...

Effects of NaCl Stress on Physio-ecological Responses of Glycine soja

In order to study the salt tolerance of wild soybean and physio-ecological responses while they are under salt stress.Seedlings were transferred with 0,50,100,150 and 200 mmol·L-1 of NaCl solution,and determined related indexes.The results showed that there was no significant effect on the growth of wild soybean under low concentration of NaCl.While under severe stress or time prolonging,the growth rate of fresh weight was slower,water content ratio reduced,root-shoot ratio increased,the content of soluble sugar increased quickly but it decreased a little later,the content of soluble protein increased at first and then decreased,the content of Prolineand malondialdehyde(MDA) content increased.The results indicated that the wild soybean had certain salt tolerance ability.Root-shoot ratio,water content ratio,the content of soluble sugar,soluble protein,MDA and Proline could be used as important indices for reflecting the salt tolerance of wild soybean.