The Placobutrazol (PBZ) can delay the growth and induce the flowering of citrus through the inhibition of biosynthesis of gibberellins. Besides, other features of the plants can be influenced by the application of PBZ, as well as the concentrations and distribution of carbohydrates. The work was carried out aiming to study the possible relationships between concentrations and distribution of carbohydrates in the plant and application of PBZ in acid lime tree 'Tahiti', grafted on lemon tree 'Cravo' and cultivated in pots of five litters. The PBZ was applied in plants conducted in a growth chamber, under controlled temperature (28º C day/ 20º C night), and photoperiod of 16 hours with light, with photosynthetic photons flow of about 170 µmol m-2 s-1. The application of PBZ caused significant reductions on the levels of carbohydrates in the leaves because they induced the flowering in the acid lime tree 'Tahiti'. The application of paclobutrazol resulted in the accumulation of reserves of carbohydrates in the roots.
Citrus latifolia Tanaka; phytoregulators; hydric stress
