自然条件下，西洋参种胚第一年增长很缓慢，α、β-淀粉酶，过氧化物酶活性很低。第二年胚迅速增长，这3种酶活性逐渐上升。激素处理后，显著地提高了这3种酶的活性，加速了胚乳养分的分解，还原糖含量逐渐增高，从而其种子能提早萌发。 Under natural conditions, the growth of American ginseng embryos is very slow in the first year, and α,β-amylase and peroxidase activity are very low. The second year of rapid growth of embryos, these three kinds of enzyme activity gradually increased. After hormone treatment, the activity of these three enzymes was significantly increased, the decomposition of endosperm nutrients was accelerated, and the content of reducing sugars increased gradually, so that their seeds could germinate earlier.