Fig. 1

Phenotypic distribution and correlation between five fruit traits in three training populations, (A) TGC1 (n = 162), (B) TGC2 (n = 191), and (C) combined (n = 353). The phenotypic data were corrected for environmental effects using the best linear unbiased prediction (BLUP). Each box shows histograms (diagonal), the Pearson correlation coefficients (upper right diagonal), and pairwise scatter plots (lower left diagonal) between traits. The fruit traits are presented by FW (fruit weight), FWt (fruit width), FH (fruit height), PT (pericarp thickness), and Brix. ***P < 0.001, **P < 0.01, and *P < 0.05