Diagram summarizing the development of the vascular network and the vascular bundles of berries at various DAA. Starting at veraison, the distance between the berry surface and the peripheral vasculature (pv) increased. This distance is the difference between the berry surface and the vascular diameter (vd). As the berry expanded, new vascular bundles differentiated, increasing the order of bundles (I–IV). Within each vascular bundle, the number of radial files (rf) remained unchanged as the berry aged. However, the ranks (1, 2, 3,…) of tracheary elements within the radial files increased throughout berry development, rank 1 being the first differentiated element. p = phloem, f = fibres.