UC Riverside Citrus Variety Collection

The collection largely comprises accessions within the genus Citrus, the remaining types are included among 28 other related genera in the Rutaceae subfamily Aurantioideae.

It includes accessions that were first introduced in the early 20th century, as well as varieties brought in over time from various curators, and newer varieties that were more recently developed by breeding or brought in as material through the Citrus Clonal Protection Program (CCPP), a special program that evaluates the trees for the nursery and citrus industries.

Other research being conducted in the collection ranges from subjects related to entomology, nematology, microbiology, plant pathology, soil science, and metabolomics.

In addition, the USDA-ARS National Clonal Germplasm Repository for Citrus and Dates (NCGRCD) uses the collection for the conservation of genetic diversity within the family Rutaceae.

David Karp photographed the fruit and trees of the CVC, which are placed on the web by Toni Siebert.