part_of part of part of seed germination stage root development stage coleorhiza emergence stage Laurel_Cooper 2012-03-22T03:42:34Z PO_GIT:370 PO:0025475 Occurs in Poaceae and some other monocotyledons. May occur simultaneously with coleoptile emergence from the growth medium. The actual point of emergence from the seed coat (PO:0009088) may not be observed if the seed (PO:0009010) is underneath a growth medium. In a fruit (PO:0009001) with a persistent pericarp (PO:0009084), emergence from the seed coat may not be observed. If the fruit is a caryopsis, the dry pericarp is fused with the seed coat, and emergence from the pericarp is simultaneous with emergence from the seed coat. This terms is used only for seed plants. plant_structure_development_stage A root development stage (PO:0007520) during which a coleorhiza (PO:0020034) emerges from the seed coat (PO:0009088).