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Fig. S1 STRUCTURE software bar plots showing ancestry proportions for K = 2–5.

Fig. S2 Phenotypic variability (box plot) for serotiny in the eastern Iberian Peninsula.

Fig. S3 Density plot for pairwise kinship, as estimated by SPAGeDi 1.3.

Fig. S4 Linkage disequilibrium (LD) heatmap for single nucleotide polymorphisms (SNPs) associated with serotiny in focal study region.

Fig. S5 Linkage disequilibrium (LD) heatmaps for all polymorphic single nucleotide polymorphisms (SNPs) in four range-wide populations.

Table S1 Details on range-wide populations included in the single nucleotide polymorphism (SNP) genotyping

Table S3 Marker effects of 26 single nucleotide polymorphisms (SNPs) with P < 0.05 in the mixed-effects linear models

Table S4 Annotation and mapping information for single nucleotide polymorphisms (SNPs) associated with serotiny

nph12483-sup-0002-TableS2.xlsapplication/msexcel183KTable S2 Illumina Oligo Pool Assay (OPA) design file and designability scores provided as Excel file