The Oleaceae experienced the core eudicot common hexaploidization (ECH) event, the Oleaceae common hexaploidization (OCH) event, and the Oleaceae recent teraploidization (ORT) event. For the convenience of searching, we built independent information library for the F. pennsylvanica genome to store duplicates generated from polyploidizations (ECH, OCH, and ORT), with a total of 5,225 records. Click here to download the full Polyploidizations duplicates genes list.