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试验研究了不同浓度的氯化钠对光果甘草(Glycyrrhiza glabra L.)和苦豆子(Sophora alopecuroides L.)种子萌发的影响进行了研究。研究结果表明:在不同浓度的NaCl条件下,光果甘草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1.8%浓度时,光果甘草种子仍能保持60%以上的发芽率,而苦豆子种子发芽率只有4.8%。光果甘草种子发芽的最适盐浓度为1.6%,临界浓度为1.9%,极限浓度为2.4%。而苦豆子种子发芽的最适盐浓度为0.9%,临界盐浓度为1.2%,极限盐浓度为1.9%。光果甘草种子的发芽指数、活力指数和盐害指数迅速下降的浓度都比苦豆子高,而盐害率比苦豆子低很多。盐浓度提高到1.9%时,光果甘草种子的盐害率只有40.06%,而苦豆子的为100%,由此可看出,光果甘草的抗盐能力非常强,能适应含NaCl盐量高达1.8%的恶劣的生态环境。而苦豆子的抗盐能力相对较弱,只能适应含盐量为1.2%的土壤条件。对胚根胚芽生长来讲,在低浓度时NaCl盐对胚根胚芽生长的影响较小,浓度升高到1.2%以上,胚根胚芽生长受到严重影响,其中胚根生长受到影响较大。
The effects of different concentrations of sodium chloride on the seed germination of Glycyrrhiza glabra L. and Sophora alopecuroides L. were studied. The results showed that under different concentrations of NaCl, the germination potential, germination rate, germination index, vigor index and embryo germination length of Glycyrrhiza uralensis and Sophora alopecuroides seeds decreased with the increase of salt concentration. However, at the concentration of 1.8%, the photosynthetic rate of Glycyrrhiza glabra remained over 60%, while the germination rate of Sophora japonica seeds was only 4.8%. Light licorice seeds sprouting optimum salt concentration of 1.6%, the critical concentration of 1.9%, the ultimate concentration of 2.4%. The optimum salt concentration of Sophora alopecuroides seed germination was 0.9%, the critical salt concentration was 1.2% and the limit salt concentration was 1.9%. The germination index, vitality index and salt damage index of Glycyrrhiza glabra seeds were both higher than those of Sophora alopecuroides, while the salt damage rate was much lower than that of Sophora alopecuroides. When the salt concentration increased to 1.9%, the salt damage rate of Glycyrrhiza glabra seeds was only 40.06%, while that of Sophora alopecuroides was 100%. It can be seen that the salt-tolerant capacity of Glycyrrhiza glabra is very strong and can adapt to the salt content Up to 1.8% of the harsh environment. However, the salt tolerance of Sophora alopecuroides is relatively weak and can only adapt to the soil conditions with salt content of 1.2%. In terms of embryo germ growth, NaCl salt had little effect on embryo germination at low concentration, and the concentration increased to more than 1.2%. The growth of embryo germs was seriously affected, and the growth of radicle was more affected.