摘要
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,可溶性蛋白含量先升高后降低,丙二醛(MDA)含量升高,游离脯氨酸(Pro)含量成倍增加。各指标的变化规律证明野生大豆具有一定的耐盐性,根冠比、含水率、可溶性糖、可溶性蛋白、MDA、Pro等是检测野生大豆抗盐性强弱的重要指标。
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.
出处
《大豆科学》
CAS
CSCD
北大核心
2011年第2期242-245,共4页
Soybean Science
