Fig. 9. Total zeatin-like cytokinin concentrations in florets (a), vascular cobs (b), endosperm/nucellus (c) and pedicels (d) of plants subjected to control, shade, and water deficit treatments during the pre-pollination stage (upper panels) or post-pollination stage (lower panels) in Exp. II. Means ± SEM of 10 replicates are shown.