Fig. 5

Biplot of PCA based on the first two components. This figure illustrates the PCA of various genotypes, explaining over 83% of the total variance in the data. The genotypes are classified into different tolerance groups based on their positions in the biplot: semi-tolerant (284 and Jules), tolerant (217, 177, 294, and 269), sensitive (201 and 167), and semi-sensitive (266 and 250)