Table 2 . Hierarchical F ST estimates for levels within the field trial subset and the DKO grouping subset. Levels of sampling are: country level (Figure 1 , DK, F, and UK), grouping level (Figure 1 , DKO1, DKO2, DKO3, DKO4, DKO5, DKO6), and field/plot level (individual samples from fields within groupings and plots within field trials, Figure 1and Figure S1 ). Block level andclover genotype level (Figure S1 ) are also included for the field trial subset. Numbers show the F STestimates of each level out of the total variance (e.g.F country/total) and within outer levels (e.g. effect of block level within each country:F block/country). Statistically significant values compared to 1000 random permutations are indicated with asterisks: *p<0.05, **p<0.01, and ***p<0.001.