Fig. 3From: A metabolic perspective of selection for fruit quality related to apple domestication and improvementGenome distribution of significant SNPs related to all metabolites. The circles from outside to center represent amino acids and nucleic acids (a), alkaloids (b), flavonoids (c), lipids (d), organic acids (e), others (f), phenolic acids (g), soluble tannins (h), and unknown metabolites (i). The unit for chromosome length is Mb. The P-value of all significant SNPs associated with metabolites are listed in Additional file 2: Table S9Back to article page