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Results for your query: docsPerPage=100;f221-subject=graftTue, 01 Jan 2002 12:00:00 GMTCalifornia mealybugs can spread grapevine leafroll disease. Deborah A. Golino, Susan T. Sim, Raymond Gill, Adib Rowhani
http://xtf.cdlib.org:8080/xtf/data/pdf/calag56-6/calag56-6.pdf
UC Davis's Foundation Plant Materials Service (FPMS) maintains the disease-tested, professionally identified collection of grape scion and rootstock varieties, which is the core of the
California Grapevine Registration and Certification Program. In 1992, newly developed serological testing techniques revealed the presence of grapevine leafrollassociated viruses (GLRaVs) in
previously healthy vines in an older foundation propagating block, indicating active and recent virus spread. FPMS responded by increasing isolation distances and implementing a comprehensive
virus screening program using the new methodology. The critical problem was the lack of information on leafroll virus epidemiology. When the distribution of infected plants in the old vineyard
was mapped, new infections were frequently adjacent to known diseased grapevines. This study examined the ability of mealybugs, a putative leafroll vector, to transmit this group of viruses. We
were able to confirm that four species...http://xtf.cdlib.org:8080/xtf/data/pdf/calag56-6/calag56-6.pdfTue, 01 Jan 2002 12:00:00 GMT