PCR, abbreviation for polymerase chain reaction, a laboratory method based on DNA analysis used to detect vine pathogens. This technique has helped in determining strains of virus, for example, and the insects responsible for their spread.
Kumagai, L., and Fabritius, A.-L., ‘Detection and differentiation of pathogenic Agrobacterium vitis and A. tumefaciens in grapevine using multiplex Bio-PCR’, Proceedings of the 2nd Annual National Viticulture Research Conference, July 2008 (Richmond. Calif). iv.ucdavis.edu/files/108864.pdf.
Weber, E., Golino, D., and Rowhani, A., ‘Laboratory testing for grapevine diseases’, Practical Winery & Vineyard (Jan/Feb 2002), 13–27.