In peaches, the application of GA3 causes asymmetric flower
distribution along the shoot. In treated shoots, the lowest
density of flower buds is located in the proximal segment of the
shoot, whereas the higher one is found in the distal segment,
increasing gradually from the former to the latter, which is in
agreement with results by Byers et al. (1990). It has been
suggested that GA3 persistence in the external surface of treated
organs is very limited (Monselise et al., 1976), thus GA3 action
on buds developing later in the season (August and September)
is reduced, explaining the higher flower density on the distal
shoot segment in the following spring after treatment. This is a
critical point for planning winter pruning, since the removal
of apical segments in GA3 treated trees could lead to an
excessive reduction in the number of flowers at bloom and even
reduce the yield.