Embryonic cell and apical meristems continue to divide as the time of stratification prolongs so the embryo increases in volume and turns from ivory-white to viridescence which are the signs of gradually maturing seed .

胚细胞随着层积时间的延长不断分裂，顶端分生组织逐渐分化，胚体积增大，由乳白色转为 淡 绿色，逐渐发育成熟。