الفهرس 
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Abstract
This work was carried out during May 2016 and 2017 seasons in post-harvest Lab. Pomology Dept. Cairo University, Egypt. Matured Apricot fruits cv. Canino were harvested and separated for several groups. i.e. 1st experiment which include packaging in perforated bags (0.05 & 0.1%), Stretch PE and modified atmosphere treatments, 2nd experiment which included coating with Nano chitosan and Nano silicon treatments, 3rd experiment which included calcium chloride, ethylene absorber and hot water treatments. The treated fruits were stored at 1±1 ºC and humidity 90-95% for 7 weeks, during this period many random samples were taken weekly. The changes in fruit firmness, fresh weight loss (FWL), discarded fruit percentage (DFP), fruit panel test(FPT), titratable acidity (TA), total soluble solids (TSS), ascorbic acid content (Vitamin C), fruit skin color(FSC) and respiration rate at intervals were estimated during 7 weeks. During shelf life, the marketable fruits was significantly decreased with the advance in periods. Results showed that all treatments in the 1st experiment were significantly maintained higher fruit firmness compared the control. Also, perforated bags 0.05% treatment maintained lowest values of DFP, FWL, TSS, FSC and respiration rate compared with the other treatments. In contrast, perforated bags 0.05% treatment maintained higher values of fruit panel test, TA percentage and Vitamin C in the two studied seasons. During shelf life, the marketable fruits was significantly the highest value in perforated bags 0.05 %treatment compared with control and other treatments in both seasons. The 2nd experiment treatments indicated that the application of Nano chitosan (0.5%) + TBZ (Thiabendazole) maintained the high values of fruit firmness and vitamin C in both seasons. While, all coating treatments maintained the lowest TSS, FWL values and DFP percentage compared with the control without significant differences. The lowest value for each of TSS, DFP, FSC and FWL percentage was achieved by Nano chitosan 0.5% + TBZ treatment. Similarly, that treatment significantly lower DFP compared with the other treatments. During shelf life, the marketable fruits was significantly the lowest in control treatment compared with other treatments in both seasons. The 3rd experiment showed that the perforated bags 0.1 %+ potassium permanganate treatment maintained significantly higher value of firmness, TA and Vitamin C compared with the other two treatments in the 1st and 2nd seasons. Also, perforated bags 0.1% + potassium permanganate treatment maintained lowest values of FWL, DFP, TSS, FSC and respiration rate compared with the control and other treatments. During shelf life, the Marketable fruits was significantly the lowest in control treatment compared with other treatments in both seasons. In general, the values of fresh weight losses, fruit panel test, discarded fruit percentage, TSS, FSC and respiration rate were gradually increased with the advance in cold storage period in the two seasons. On the other hand, the values of fruit firmness, ascorbic acid content and titratable acidity percentage were decreased at the end of cold storage period in the two seasons. During shelf life, the Marketable fruits was significantly the lowest in control treatment compared with other treatments in both seasons.