Figure 4

Unweighted Paired Group Mean Arithmetic (UPGMA) dendrogram between four N. parvum (Np) populations. The dendrogram was based on Nei’s distance and was generated for populations from southwestern and southeastern French regions (SW and SE, respectively), French vineyards (GRA), Californian walnut (CAL_W) and almond (CAL_A) trees and Spanish walnut trees (SPA). Bootstrap values above 50 are displayed at nodes.