At germination, the embryo produces gibberellin, which stimulates the aleurone layer to synthesize enzymes, especially a在种子萌发过程中，胚产生赤霉素，赤霉素可以刺激糊粉层合成一些酶特别是淀粉酶。
The enzymes are synthesized from the amino acids supplied by breakdown of ALEURONE GRAINS.酶是由糊粉粒分解后产生的氨基酸所合成的。