本实验对甜菜种子萌发过程中的贮藏物质以及呼吸强度、过氧化氢酶活性、酯酶同工酶的变化进行了研究。研究结果表明:在种子萌发初期淀粉含量下降,还原糖含量增加,蔗糖在种子萌发24小时之内就消耗殆尽,蛋白质在萌发初期就存在着合成作用;种子萌发初期呼吸强度、过氧化氢酶活性、酯酶同工酶活性明显增强,可作为种子活力的生理生化指标;不同类型品种间的物质转化速度及代谢强度,均表现为高糖型品种大于丰产型品种,因此,这些代谢特点又可作为早期品种选择的参考生理指标。 In this experiment, the changes of storage material, respiration rate, catalase activity and esterase isoenzyme in the process of beet seed germination were studied. The results showed that the content of starch decreased and the content of reducing sugar increased at the early germination stage. Sucrose was consumed within 24 hours after germination, and the protein had a synergistic effect in early germination stage. The respiration rate, catalase Activity and esterase isoenzyme activity were significantly increased, which could be used as physiological and biochemical indexes of seed vigor. The rate of material transformation and the metabolic intensity of different types of cultivars were all higher than that of high-sugar cultivars. Therefore, these metabolic characteristics Can be used as reference for early varieties of physiological indicators.