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United States Department of Agriculture

Agricultural Research Service


item Kahn, Tracy
item Bier, Ottillia
item Roose, Mikeal
item Semancik, Joseph
item Bash, John
item Krueger, Robert

Submitted to: International Society of Citriculture Abstracts
Publication Type: Abstract Only
Publication Acceptance Date: 7/15/2003
Publication Date: 2/15/2004
Citation: Kahn, T.L., Bier, O.J., Roose, M.L., Semancik, J.S., Bash, J.A., Krueger, R. 2004. Cooperation in the conservation of citrus genetic resources: riverside, california. International Society of Citriculture Abstracts, 10th International Congress, p. 83

Interpretive Summary:

Technical Abstract: A consortium of cooperating programs for the conservation and utilization of genetic resources centers the University of California, Riverside (UCR). University units include the Citrus Clonal Protection Program (CCPP), Citrus Variety Collection (CVC), and Citrus Breeding Program (CBP). The USDA supports the National Clonal Germplasm Repository for Citrus and Dates (NCGRCD). The most extensive holding of citrus germplasm is the CVC with over 900 accessions. This field collection has served as a source of genetic material for may projects. The CVC serves the invaluable function of conserving genetic resources and is useful for horticultural evaluations, but cannot be used as a source of budwood due to phytosanitary issues. The CCPP is the primary source of pathogen-tested, true-to-type budwood for the California industry. New varieties are introduced after meeting Federal and State requirements. Foundation materials are maintained in field plantings and under screen. The NCGRCD has the mission of acquiring, maintaining, distributing, and evaluating citrus germplasm. A separate protected collection is maintained as a source of budwood for distributions, and collaborative work on evaluation projects is carried out. CBP breeders have elucidated many fundamental aspects of citrus genetics and evolution as well as released new varieties to the industry. More recently, the CBP has focused on utilization of molecular tools to better understand phylogenetic relationships between accessions. This poster reviews some of the changes in these programs since the last Congress.

Last Modified: 06/28/2017
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