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以百喜草种子为试材,研究了2、5、10、20、30、50、100、300、500、1 000mg/L的氯化镧浸种对百喜草种子萌发及幼苗生长过程中生理生化特性的影响。结果表明:La3+浸种对百喜草种子萌发和幼苗生长有影响且与浓度有关;2~20mg/L的La3+处理能提高百喜草种子活力及淀粉酶活性,并且能促进百喜草幼苗茎叶和根系的生长,其中以20mg/L处理效果最为显著;当La3+浓度>50mg/L时,百喜草种子的活力指数、淀粉酶活性以及幼苗茎叶和根系生长受到抑制;此外,镧对百喜草幼苗地下部分生长的影响比地上部分生长的影响显著。
With hippocastanum seeds as test material, the effects of soaking lanthanum chloride (2, 5, 10, 20, 30, 50, 100, 300, 500 and 1000 mg / L) on the seed germination and the physiological Effects of biochemical properties. The results showed that seed germination and seedling growth of the hippophae rhamnoides were affected by La 3 + soaking, and La 3 + at 2 ~ 20 mg / L could improve the seed vigor and amylase activity of the hippophae rhamnoides seedling, And the growth of the root system, of which 20mg / L treatment effect is the most significant; when La3 + concentration of 50mg / L, Bax hi grasses seed vigor index, amylase activity and seedling sprout and root growth inhibition; In addition, The effect of the growth of the subterranean part of the hippocastanum seedlings was more pronounced than that of the aerial part.