ABSTRACT
This conclusion presents some closing thoughts on the key concepts discussed in the preceding chapters of this book. The book demonstrates that all axillary buds have equivalent developmental potential in day-neutral tobaccos, such as they will flower after the same number of nodes or days when grafted to the base of the plant and forced to develop by decapitation of the stock plant. Roy M. Sachs and W. P. Hackett have elaborated their nutrient diversion hypothesis of the control of flower formation. They argue that agents that promote sink activity of the apical meristem would appear in traditional analyses as a specific florigen. A correlation between cessation of extension growth and axillary flower initiation, similar to that observed in black currant has been described in Salix pentandra by Junttila. In mature trees of this species, flower formation in natural conditions begins at the time of, or shortly after, apical growth cessation.
