Fig. 1. Dye accumulation in the vascular systems of (A) ‘Braeburn’ and (B) ‘Granny Smith’ as a function of the period of exposure. The points are mean values (n = 10) for the primary (circles), dorsal (triangles) and ventral (squares) vascular bundles of the fruit with the corresponding s.e. indicated by the vertical bars. Fruit were assessed at 93 DAFB (‘Braeburn’) and 104 DAFB (‘Granny Smith’).