New Vines Resistant to Pierce's Disease

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for the June 15, 2007 issue

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Lynn Alley
Issue: June 15, 2007

Grape breeders at the University of California, Davis, hope they're close to producing vines that are resistant to Pierce's disease, which kills grapevines. UC, Davis, professor Andrew Walker, a grape breeder, used wild American grape varieties—all of which are resistant to Pierce's disease in varying degrees—to breed a group of eight new vines (four red, four white), with strong resistance.

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