Figure 1From: Breakdown of resistance to grapevine downy mildew upon limited deployment of a resistant varietyA P. viticola isolate showing vigorous growth on the resistant variety Bianca. P. viticola isolates SL, SC and SU were inoculated on leaf discs of the resistant grapevine variety Bianca (top) and the susceptible grapevine cultivar Chardonnay (bottom). Pictures were taken at 6 dpi.Back to article page