Plant Structure Ontology    Click folder icon or node name to view/hide its children terms. Click on the ontology numbers to view it at Gramene.   whole plant (PO:0000003) tissue (PO:0009007) sporophyte (PO:0009003) obsolete plant structure (PO:0006300) in vitro cell, tissue and organ culture (PO:0000004) gametophyte (PO:0009004) cell (PO:0009002)   Plant Ontology(PO) is developed by the Plant Ontology Consortium (POC). Plant Growth and developmental stages ontology will be available at BarleyBase soon.