Prototype KG‑aware adaptation of the BioPortal interface. Graph pages generated from live KG‑Registry metadata; tool links go to the live BioPortal.
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PPO

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Plant Phenology Ontology

KGXBioPortal ontologyv2026-05-06purl.obolibrary.org/obo/ppo.owl#Unspecified
Visibility: Public

A KGX transformation of the BioPortal ontology Plant Phenology Ontology (PPO), produced by KG‑Bioportal. Nodes are ontology classes; edges are the relations between them.

Graph at a glance

921
Nodes
1,480
Edges
2026-05-06
Version
2026-09-14
Transformed

Products & downloads

KGX
KGX nodes & edges
PPO.tar.gz
921 nodes · 1K edges
Base graph is the full graph

This ontology declares no imports, so its base graph already is its full graph; nothing separate was built.

The graph contains PPO_nodes.tsv and PPO_edges.tsv. Releases are incremental, so each link points at whichever release most recently rebuilt this ontology.

Biolink categories 9 categories across 921 nodes

NamedThing377
Attribute274
PhysicalEntity95
AnatomicalEntity76
Activity61
BiologicalProcessOrActivity31
InformationContentEntity3
LifeStage2
Procedure2

An item carrying more than one category is counted under each, so these counts can add up to more than the total.

How they were assigned 544 of 921 nodes (59.1%)

8is a seed term whose Biolink class is not in doubt
536inherits from a seed term above it in the hierarchy

Biolink categories 1 category across 1,480 edges

Association1,480

An item carrying more than one category is counted under each, so these counts can add up to more than the total.