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Neighbor-joining radiation tree showing genetic distance among Portuguese Vitis vinifera wild vines and varieties genotypes, based on 231 single nucleotide polymorphism (SNP) loci. Cluster I, solid lines in red color; cluster II, solid lines in black color; cluster III, solid lines in blue color; wild vine codes in green font; variety names in black font; cultivated grapevines with the wild group are highlighted in a yellow background.
