# Search by Ontology

To search varieties by Rice Crop (CO_320) or Plant Trait Ontology (TO)
The traits are mapped to Crop and Trait Ontology terms. The traits can be selected to belong to the selected CO/TO terms.


1.  Select the CO_320 or TO term from the list.


2.  The list of phenotypes in the last phenotype contraint listbox is limited only to descendants of the selected CO/TO term.


3.  Set phenotype constraint as describe above.