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Principal component analysis based on the variability between gels of the two potato species. (a) S. commersonii and S. tuberosum Désirée; (b) S. commersonii; (c) S. tuberosum Désirée. Abbreviations: Com, S. commersonii; Des, S. tuberosum Désirée; Ctl, Control; Suc, Sucrose; Stl, Sorbitol; Var., variance; Cum. Var, cumulative variance.
