Table 1.

Measures of Genome-wide Differentiation between Cardamine amara and Arabidopsis arenosa Populations.

Populations	Ploidies	Mean AFD	Fixed Diffs	Mean Fst	No. of SNPs
PIC–VKR	4× – 2×	0.09	30	0.09	2,326,315
PIC–LUZ	4× – 2×	0.09	2	0.08	2,314,229
CEZ–VKR	4× – 2×	0.11	120	0.12	2,333,538
CEZ–LUZ	4× – 2×	0.11	86	0.11	2,335,004
CEZ–PIC	4× – 4×	0.06	0	0.04	2,297,229
LUZ–VKR	2× – 2×	0.10	6	0.09	2,018,892
A. arenosa tetraploids–A. arenosa diploids	4× – 2×	0.05	21	0.11	7,106,848

Note.—Differentiation metrics shown are genome-wide mean allele frequency difference between populations (Mean AFD), the number of fixed differences (Fixed diffs) and mean F_st (Nei 1972). In the case of A. arenosa, F_st in diploids is calculated as a mean over all pairwise F_st measurements between the five previously characterized diploid lineages (Monnahan et al. 2019).