1.【生】内胚层,下胚层;【植】基芽
1.the inner germ layer of an embryo, which develops into the endoderm
1.The proembryo from zygotic cell pisions may be pided into three parts: proper, hypoblast and suspensor.
玉米合子细胞分裂形成的原胚分为胚柄、胚基与胚体三部分。