This work was carried out during two successive seasons (2009) and (2010) to examine the response of
Florida Prince peach fruits to some pre-harvest treatments i.e. chitosan at 0.5 and 1.0% , and CaCl2 at 2 and 4 %
as well as their combinations on some fruit quality parameters under cold storage . Fruit weight loss (%), decay
(%) and T.S.S.(%) of Florida Prince peach fruits were increased in most cases with advancing the storage
duration. However, fruit firmness and titratable acidity (%) were decreased with advancing the storage period.
Meanwhile, the lowest values of weight loss (%) and decay (%) and the best results of shelf life and firmness
were gained by using the treatment of 1% chitosan + 4% CaCl2. In addition, the highest fruit T.S.S., besides the
lowest fruit titratable acidity percentage was scored by control and chitosan treatments during the storage
period.