Viticultural Information

Subject	Rootstock Varieties
Description	Wine grape scion varieties are nearly all of Vitis vinifera parentage. This species is prone to attack by two root pests, grape phylloxera and parasitic nematodes. Vitis vinifera vines can be protected from these pests by grafting them to rootstock varieties derived from other vine species and resistant hybrids. Many of the rootstocks used for this purpose are adapted to particular soil types, chemistry and fertility. They may also be used to overcome vineyard problems such as drought, excess water, and salinity. For additional information about individual roostocks, please see the name of the roostock under ‘Varieties of Rootstock’.
People	Peter Cousins Jennifer Hashim-Buckey Michael McKenry David Smart Andrew Walker Jim Wolpert
Links	The National Grape Registry (NGR) contains information about varieties of wine, juice, and table grapes, raisins, and grape rootstocks available in the United States. Growers, nurseries, winemakers and researchers can find background information and source contacts for those grape varieties in this single convenient location. Foundation Plant Services at UC Davis is the source of Foundation grapevine material for the nursery industry, and the staff can provide information about possible sources for obtaining this stock.
Publications	Anonymous. 2003. Release of UC Patented Nematode-Resistant Rootstocks (PDF). FPS Grape Program Newsletter, University of California, Davis, California. Page 5. Cousins, P. 2011. Three Root-Knot Nematode Resistant Rootstocks Released By USDA Agricultural Research Service (pdf). FPS Grape Program Newsletter, University of California, Davis, California. Page 12. Fort, K. and Walker, A. 2011. Breeding Salt Tolerant Rootstocks (pdf). FPS Grape Program Newsletter, University of California, Davis, California. Pp 9-11. Walker, A. 2002. Developing Rootstocks to Combat Nematodes in California Vineyards (PDF). FPS Grape Program Newsletter, University of California, Davis, California. Pp 15-17. Walker, A. 2006. New Nematode-resistant Grape Rootstocks are Nearing Release (PDF). FPS Grape Program Newsletter, University of California, Davis, California. Pp 8-10. Walker, A, Ferris, H, and Zheng, L. 2004. Rootstock Selections with Strong and Broad Resistance to Nematodes are Nearing Release (PDF). FPS Grape Program Newsletter, University of California, Davis, California. Pp 8-9.

This website is a work in progress of the University of California (UC) Division of Agricultural and Natural Resources (ANR) Integrated Grape Production Workgroup. It is designed to increase accessability to the work of UC researchers, including faculty, Cooperative Extension (CE) specialists, CE advisors, and staff. UC Researchers interested in contributing content are invited to contact Deborah Golino dagolino@ucdavis.edu to discuss possible contributions.