Figure 2

Genetic clusters of T. vaporariorum sampled in Finland delineated by Bayesian analysis implemented in STRUCTURE [[52]] . In each graph individuals are represented by vertical bars broken into K differently colored genetic clusters, with length proportional to assignment in each cluster. Probability of assignment of each individual is indicated from 0 to 1. Individuals are grouped by sample with the sample code listed at the bottom of the bar graph. A: Analysis of all 18 samples, 800 individuals, K = 3. B: Analysis of a subset of 14 samples collected from tomato, 570 individuals, K = 4. C: Analysis of a subset of 11 samples collected from cucumber, 380 individuals, K = 3. The combined dataset was used in the initial run (A). Samples HR, ML and NL were included in analysis of both host plant groups (B and C) since these samples might have been exposed to several hosts grown in the same compartment or greenhouse. Samples HR a, b and ML a, b were separated in analyses B and C as they were exposed to different hosts.