Endosperm and embryo of seeds meristems
of apical buds and young leaves. stimulates stem elongation, root growth
apical dominance, development of fruit ,instrumental in
photrophism and gravitropism. produced in roots and transportedto other
organs stimulates cell division and growth, seed
germination, flowering , and delay senescence. Meristems of apical buds, roots, and
young leaves; embryo. promotes seed and bud germination, stem
elongation, leaf growth, stimulate flowering and development
of fruit. leaves, stems, green fruit Inhibits growth, closes stoma during
water stress; counteracts breaking of dormancy. tissues of ripining fruits, nodes of
stems, senescent Promotes fruit ripening; opposes or
reduces some auxins, inhibits growth of roots, leaves,
flowers, depending on species.