Fig. 5
Demographic Model Inference based on the subspecies definition and on the PCA plot, all nu* represent populations with nuA referring to the ancestral population, f signifies the flow for the admixture event, m represents the migration between the populations (units 2Nrefmij), s is the fraction of the population for each subspecies and T1, T2 represents timepoints for the events (units 2Nref). Understanding mechanisms generating parallel genomic divergence patterns among populations is a modern challenge in population ecology, which can widely contribute in the perception of the intraspecific diversification of crop wild relatives. Here we investigated the genomic divergence between three population schemes of Brassica cretica using demographic model selection. According to the above results we can support that strict isolation is not recorded between populations. Discrete unidirectional admixture event (a) or continuous symmetric migration (b) was recorded indicating an absence of insuperable barriers in gene flow between populations. Even in the case of taxonomic segregation (c), where strengthen barriers would be expected, late discrete unidirectional admixture event is corroborated