Fig. 5
Population genetics of Moehringia tommasinii. a Principal component analysis of individuals of Moehringia tommasinii (populations GL, OSP, CK, PP, ISTa and ISTb) and M. muscosa (populations GLm and VDCm) based on microsatellite data. b Pairwise gene flow between populations of M. tommasinii and M. muscosa; the lines indicate intensity of gene flow (Nm): 1st quartile – 0.33–0.79, 2nd quartile – 0.80–1.25, 3rd quartile – 1.26–1.71, 4th quartile – 1.72–2.2. c Genetic structure and assignment of individuals into classes as assessed by the computer programs STRUCTURE. Each individual plant is represented by a single vertical line; each colour represents a cluster, and the length of the coloured segments indicates the individual’s estimated proportions of membership in those clusters. d Neighbour-joining network based on Nei’s genetic distance data-matrix. e Simplified geographic position and distances among the populations. Symbols and colours in a–d designate genetic clusters as inffered from Bayesian assignment test (c). In a–c petal shape and size are shematically presented for each population of M. tommasinii and M. muscosa