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Principal coordinates analysis (PCoA) of 51 multilocus haploid genotypes of Sphagnum warnstorfii for the CZ-SK dataset with significant linear regression of pH (R2 = 0.1869, P < 0.05). The first three principal coordinates account for 14.5%, 11.8%, and 9.0% of the total genetic variation. The arrow indicates the direction of the significant linear regression, and size of the circles is proportional to the pH value.
