Comparative Study on Chemical Constituents of Ginseng Flowers with Four Consecutive Cultivation Age

Figure 2

Score plots of PCA analysis (a)–(c). OPLS-DA analysis (d)–(f) of GF3 vs. GF4, GF3 vs. GF5, and GF3 vs. GF6. PCA: principal component; OPLS-DA: orthogonal partial least squares-discriminant analysis. For GF3 vs. GF4, R²X is 0.753, R²Y is 1, and Q² is 0.795; for GF3 vs. GF5, R²X is 0.787, R²Y is 1, and Q² is 0.924; for GF3 vs. GF4, R²X is 0.570, R²Y is 0.998, and Q² is 0.892.

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