Fig. 2From: Metabolomic analysis reveals the interaction of primary and secondary metabolism in white, pale green, and green pak choi (Brassica rapa subsp. chinensis)a Principal component analysis (PCA) score plots and b loading plots obtained from metabolite data for the white, pale green, and green pak choi. PC1 and PC2 accounted for > 72.3% of the total varianceBack to article page