In succession, cell layer of suspensor rapidly grew, elongated and down proembryo was carried away cell wall of archegonial base, then get into corrosion cavity in endosperm.

• 接着胚柄细胞层迅速生长、伸长，把下面的原胚送出颈卵器基部的细胞壁，进入胚乳中的溶蚀腔。