• PD/GWSS Board News

UC Davis Announces Pre-Release of Five New PD-Resistant Winegrape Cultivars

Updated: Nov 15, 2019


One of five new PD-resistant winegrapes recently pre-released by UC Davis for testing.

Pierce’s disease resistant winegrape cultivars. The cultivars are being released for testing purposes only at this time, giving interested nurseries the opportunity to begin propagation for testing purposes prior to official release.


These new winegrapes were developed by Dr. Andy Walker, whose multi-year research and breeding project has received funding for several years from the CDFA PD/GWSS Board.

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California Department of Food and Agricu