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Pierce's Disease
Research Updates

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What is Pierce's Disease?

Pierce's Disease is a bacterial infection, which is spread by bugs that feed on grapevines, particularly the "glassy winged sharpshooter." Grapevines that become infected with PD can quickly become sick and die.

glassy-winged sharpshooter

Verifying the identity and parentage of Cruzado de Rabo de Ovelha with microsatellite markers

  • Author(s): Dias, J.; Faria, Miguel; Magalhaes, Nuno; Magalhaes, Ricardo; Meredith, C; Monteiro, F.; Santos, Nuno;
  • Abstract: The reported parentage of the grape variety Cruzado de Rabo de Ovelha was examined by the use of 12 microsatellite DNA markers. The microsatellite profile of Cruzado de Rabo de Ovelha was identical to that of Castelo Branco, supporting ampelographic analysis indicating they are the same variety. Data are consistent with the parentage of Castelo Branco being Fernao Pires and Diagalves as reported. Rabo de Ovelha was ruled out as a parent of Cruzado de Rabo de Ovelha at 4 of the 12 loci.
  • Publication Date: Jan 2003
  • Journal: American Journal Of Enology And Viticulture

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