*2.7. Statistical Analysis*

Data are expressed as mean ± standard deviation of the obtained results for the selected cultivars. Data were analyzed using the *t*-test and Duncan's test. Statistical significance was defined for *p* < 0.05 (95% confidence level). Pearson's correlations were examined. To perform principal-component analysis (PCA) for melon-seed cultivars, those variables that had previously shown significant differences were used. The Kaiser–Meyer–Olkin (KMO) test for sampling adequacy was used. All statistical analyses were carried out using the SPSS program v. 23.0 for Windows.
