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用不同浓度的Na2SO4对光果甘草种子和苦豆子种子萌发的影响进行了研究。结果表明:在不同浓度的Na2SO4条件下,光果甘草种子和苦豆子种子的发芽势、发芽率、发芽指数、活力指数和胚根胚芽生长长度均随着盐浓度的增加而下降。但在浓度为2.4%时,光果甘草种子仍能保持91.7%的发芽率,而苦豆子种子发芽率为0。光果甘草种子发芽的最适盐浓度为2.4%或2.4%以上,暂无临界浓度和极限浓度。而苦豆子种子发芽的最适盐浓度为1.8%,临界盐浓度为1.9%,极限盐浓度为2.4%。光果甘草种子的发芽指数和活力指数都比苦豆子种子高,而盐害率比苦豆子种子低。盐浓度提高到2.4%时,光果甘草种子的盐害率只有8%,而苦豆子种子为100%,由此可以确定,光果甘草种子抗Na2SO4盐的能力非常强,能适应含Na2SO4盐量高达2.4%以上的恶劣的生态环境。而苦豆子种子抗Na2SO4盐的能力相对较弱,只能适应含盐量为1.8%的土壤条件。对胚根胚芽生长来讲,在各浓度的Na2SO4盐条件下,胚根胚芽生长受到的影响都比较小,但胚根生长受到的影响比胚芽大。
The effects of different concentrations of Na2SO4 on germination of Glycyrrhiza glabra seeds and Sophora alopecuroides seeds were studied. The results showed that under different concentrations of Na2SO4, the germination potential, germination rate, germination index, vigor index and radicle germ growth length of Glycyrrhiza glabra seeds and Sophora alopecuroides seeds decreased with the increase of salt concentration. However, at the concentration of 2.4%, Glycyrrhiza glabra seeds still maintain 91.7% germination rate, while the seeds of Sophora alopecuroides seed germination rate is 0. Light licorice seed germination of the optimum salt concentration of 2.4% or 2.4%, no critical concentration and the current concentration. However, the optimal salt concentration of Sophora alopecuroides seed germination was 1.8%, the critical salt concentration was 1.9% and the limit salt concentration was 2.4%. Light licorice seeds germination index and vigor index than the Sophora alopecuroides seed, and the salt damage rate is lower than the Sophora japonica seeds. When the salt concentration was increased to 2.4%, the salt damage rate of Glycyrrhiza glabra seeds was only 8%, while that of Sophora alopecuroides seeds was 100%. From this, it was confirmed that Glycyrrhiza glabra seeds had a very strong resistance to Na2SO4 salt and was able to adapt to Na2SO4 Up to 2.4% higher than the harsh ecological environment. However, Sophora alopecuroides seeds had a weaker resistance to Na2SO4 salts and could only adapt to soil conditions with salt content of 1.8%. For the growth of embryo germ, the growth of radicle was less affected by the concentration of Na2SO4, but the growth of radicle was more affected than that of germ.