Study on the Storage Technique for Peaches Ⅰ. Effect of Maturity and Pre harvest Treatment on the Storage Performances

The effects of maturities and pre harvest treatments on storage performance of peaches (Amygdalus persica cv.Okubao,A.p.cv Jingyu and A.p.cv Yanhong)were studied.The results showed that maturities could affect the storage performance directly.Fruits harvested at green-mature stage,the surface color and fruitfirmness were maintained very well during storage,the rates of pulp brown and storage rot was much lower than the fruit harvested at the ripe stage.Pre-harvest treatment with 100 mg/kg GA3 could enhance the storage performances.The storage rot was reduced if the orchards were sprayed with funglcides such as rovral flo (500 mg/kg) 1 or 2 days before harvest.Another pre-harvest treatment reagent (50mg/kg GA3,50 mg/kg 2,4-D and 2000 folds carbendazim) was also sprayed in orchards 10 days before harvest,the treated fruits retarted their physical and chemical metabolism,so that maintained the fruits quality well and reduced the rates of rot and the pulp brown during storage.