coleoptile

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

：用来保护发育状结。

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.

成熟具有根、、盾片、、根、外叶等典型禾本科植物成熟结。