Cover illustration: (Top) Shoot tips of Vitis labruscana cv. Concord (left) and Vitis vinifera cv. Merlot (right). (Middle) Concord cluster at the beginning of ripening (veraison) with cross-sections showing uptake of the xylem-mobile dye basic fuchsin into a pre-veraison berry after being fed to an adjacent berry (top), movement of dye from a post-veraison berry through the receptacle (middle) and peduncle (bottom) back to the shoot. (Bottom) Displacement transducer on cracked post-veraison Concord berry and graph overlay of the berry diameter measurements made on that plant. (See Keller et al., pp. 2577–2587.)
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