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Principal component analysis plot (PCA) of the first two factors based on 536 341 SNPs genotyped in 62 olive accessions. Accessions are coloured according to the population they belong to as defined using their geographic origin, these results and the results from the admixture analysis and chloroplast genotyping (see text). EO, eastern oleasters; WO, western oleasters; EC, eastern cultivated olives; WC, western cultivated olives.
