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(A) Petal shape by variation along the first four PCs of the carnation petal shape model, pc1 to pc4. The mean petal and petal shapes corresponding to pc values deviating by ±2 SD are shown. (B) Two-dimensional pc map generated by standard deviations from the mean petal along pc1 and pc2. The ellipses represent 1 SD from the mean petal for each one of the nodes (cultivars) shown.
