coleoptile

1.Coleoptile A sheathlike structure that protects the developing plumule in grasses.

胚芽：用来保护发育的胚芽的状的结构。

2.The mature embryo is corn posed of radicle, coleorhiza, plumule, coleoptile, scutellum and epiblast.That is the typical structure of the mature embryo of grass.

成熟胚具有胚根、胚芽、盾片、胚芽、胚根、外胚叶等典型禾本科植物成熟胚的结构。