n.胚芽,胚茎,(小鸟的)绒羽,幼芽
Coleoptile A sheath like structure that protects the developing plumule in grasses.
用来保护发育的胚芽的鞘状的结构.
The drupe fruit tree can't fruit in the dysplasia of the plumule.
核果类果树在胚芽发育异常时不能坐果.