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Am. J. Enol. Vitic. 38:4:298-300 (1987)
Copyright © 1987 by the American Society for Enology and Viticulture.
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Evaluation of Grape Rootstocks for Resistance to Type A and Type B Grape Phylloxera

J. Granett 1, A. C. Goheen 2, L. A. Lider 3, and J. J. White 1

1 Department of Entomology, University of California, Davis, CA 95616-5270.
2 Department of Plant Pathology, University of California, Davis, CA 95616-5270.
3 Department of Viticulture and Enology, University of California, Davis, CA 95616-5270.

Grape rootstocks were tested for resistance to California Type A and Type B phylloxera in the laboratory and Type B phylloxera in an infested vineyard trial. The laboratory evaluations indicated that some rootstocks with partial Vitis vinifera parentage had resistance to both biotypes; others did not. Rootstocks with no V. vinifera parentage were resistant or immune to both biotypes. Field trials appear to substantiate laboratory screening results. The best levels of resistance in field trials appear to be in cultivars SO4, O39-16, and O44-4.

Submitted on August 13, 1986




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L. Bavaresco, P. Presutto, and S. Civardi
VR O43-43: A Lime-Susceptible Rootstock
Am. J. Enol. Vitic., June 1, 2005; 56(2): 192 - 195.
[Abstract] [Full Text] [PDF]


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Copyright © 1987 by the American Society for Enology and Viticulture.