In the paclobutrazol untreated trees, the ABA content was
85.7–106.3 ng/g and 52.3–65.5 ng/g in the buds and leaves, respectively. Following paclobutrazol application, the ABA contentincreasedby 54.2–91.9%and 64.1–98.3%inbuds and leaves,
respectively and increase was drastic at the bud break stage. With
respect to stages, the ABA content was recorded high in buds and
leaves at 15 days before flowering in the paclobutrazol untreated
trees and at bud burst in the paclobutrazol treated trees. The role
of high ABA content in the induction of floral bud formation has
been reported by Chacko in mango and by Hou et al.
in litchi. Paclobutrazol induced increases in ABA is in agreement
with the earlier reports of induction in ABA biosynthesis as a result