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Fig. 1 | BMC Plant Biology

Fig. 1

From: Polymorphisms and minihaplotypes in the VvNAC26 gene associate with berry size variation in grapevine

Fig. 1

Population structure of the 114 varieties included in this study based on STRUCTURE [80]. The optimal number of genetic groups (K = 3) was set according to Evanno’s method [81]. Each variety is represented by a vertical line, divided in colored segments according to the proportion of estimated membership in the three genetic groups: k1 (red), k2 (green), and k3 (blue). Considering that a variety was assigned to a genetic group if its membership is over 0.75, k1, k2 and k3 are composed by 35, 10 and 25 individuals, respectively

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