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. 2020 Apr 9;20:154. doi: 10.1186/s12870-020-02347-x

Fig. 2.

Fig. 2

Principal Component Analysis (PCA) biplot of average genotype scores for the ‘Redgauntlet’ x ‘Hapil’ mapping population root architecture. Red numbers represent genotype numbers, Blue arrow represent the contribution and direction of root trait contribution on PC1 and PC2. Percentage figures along axis indicate the proportion of variation explained by PC. Figures in the table represent correlation coefficients between PC’s and root traits, blue shading represents a positive correlation, red a negative correlation, strength of colour indicates strength of relationship