Chemical and Physical Determination of Gibberellic Acid Effects on Postharvest Quality of Sweet Cherry.

Abstract

The effect of preharvest gibberellic acid treatments with
the dose of 10, 20 and 30 ppm on Aksehir Napolyon sweet
cherry were compared with control during 4 weeks storage.
The most important problem of sweet cherry is decolouration
of stem after storage. Different preharvest treatments can be
effective to stop or slow down decolouration.  In this research
fruit firmness, titrable acidity, total soluble solids, stem colour
(1-3 scale), weight losses and fruit decay were evaluated
depend on different concentrations of gibberellic acid. The
application of gibberellic acid decreased the loss of fruit
firmness, delayed stem decolouration and maintained the
brightness during storage compared with control and the other
application rates.