Root system architecture results. Root system architecture results. A. Entire vectorized root system. B. Total root surface distal any position in the root system (scale is in log(cm2)). C. Root length profiles for the different root orders. D. Comparison of the root diameters for the different root orders (values suffixed with the same letter are not significantly different at p<0.01, t-test). E. Surface proportion of the different root orders. F. Orientation of the roots along their root axis. The horizontal black line highlight the vertical direction. In all the figures (except B), different colors represent different root order: red = 1, green = 2, blue = 3.