Figure 4.
Genetic Effects Modulating the Overall Shape of All Leaves versus the Shape of Specific Leaves in the Heteroblastic Series.
PCA on the distribution of shape attributes across the leaf series (terminal leaflets from leaves 1-4, distal lateral leaflets for leaves 2-4) results in “heteroblasty PCs” (hPCs). Left to right, analysis of hPCs for aspect ratio, circularity, allPC1, allPC2, and allPC3. Top to bottom, analysis of hPCs 1-3 for each trait are shown. Note: hPCs between shape attributes are not comparable and hPCs for each shape attribute are derived from separate PCAs. For each hPC for each shape attribute, the distribution of hPC values for S. lycopersicum (blue), S. pennellii (purple), and the ILs (green) is shown as a histogram and broad sense heritability (H2) values provided. Loadings for each hPC are also provided, showing the weighted contribution of shape attribute values for different leaflets to the hPC score. Black, leaf 1; red, leaf 2; orange, leaf 3; yellow, leaf 4; lighter shades of red, orange, and yellow represent terminal leaflets; darker shades of red, orange, and yellow represent distal lateral leaflets.