Figure 3.

PCA of the metabolic profiles of fruits from hexose kinase overexpressing tomato plants at different stages of development. The distances between samples were determined as detailed in “Materials and Methods” by using the log-transformed, normalized data of the single measurements from which the mean values presented in Table IV were derived. PCA vectors span a 10-dimensional space to afford best sample separation. Vectors 1 and 2 including 58.5% of the metabolic variance are presented here.