In this article:
Single-node cutting of a number of cultivars of Vitis vinifera L., collected during winter, were forced at 20oC. After early exponential growth increases, growth of shoots and inflorescences slowed about seven days from bud burst.
Stage differentiation of inflorescences was found to differ considerably between cultivars at that time. Within any one cultivar these differences were not responsible for the variation in inflorescence weight and were independent of time taken to reach bud burst.
Valid estimates of bud fruitfulness are are obtained when the number and weight of inflorescences on single-node cuttings, held at 20oC with or without prior dormancy breaking treatment, are measure seven days after bud burst.
The Fruitfulness of Grapebuds I. Measuring Bud Fruitfulness of Forced Single Node Cuttings
1973, Annales de l’ Amelioration des Plantes, vol 23, issue 1, pages 1-12
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