Figure 1From: Reproductive mode and fine-scale population genetic structure of grape phylloxera (Daktulosphaira vitifoliae) in a viticultural area in CaliforniaGenetic relationship among grape phylloxera samples from four vineyard- sites in Napa (Oakville) and Yolo (Woodland) counties, California, as revealed by UPGMA clustering analysis. Clonal corrected data were used and the dendrogram was constructed by computing distances between individual samples based on the DA distance [46]. Only bootstrap values >25% are shownBack to article page