امیر وزیری زاده

The main goal of this research was studying the Effect of calcium chloride, putrescine, 1- methylcyclopropane and chitosan treatments on the storage life, quality and controlling postharvest fungal decay of pomegranate. This investigation was carried out in 2015 in two part the laboratory in a factorial randomized complete block design with 52 treatment and three replications.The first part include dipping three concentrations 0, 1 and 2% of cacl2, putrescine for four concentrations 0, 1, 2 and 3 mmol.L, 1-methyl cyclopropane with three concentrations 0, 1and 2µl/l and chitosan with three concentrations 0, 0.5 and 1 % each for four minutes. After applying chemical treatments Fruits were stored for four months at a temperature of 4 ?C. Characteristics this section including weight loss, percentage of infected fruites, juice percent, titratable acidity, total soluble solids, pH juice, vitamin C, anthocyanin and carotenoid that monthly until the end of storage, measure were making. The second part of the study, which included pieces cultivation of infected fruit on the potato dextrose agar medium (PDA), purification and identification of fungal genera isolated from most fruits infected After treatment, fruits (carrying out similar treatment with the first part) in order to measure of preventing progress fungal decay by treatments mentioned in the first part were inoculated with the fungus fruit. Characteristics measured in this part is the decay rate were measured weekly for 5 weeks. The results showed that different time period storage and chemical treatments alone any significant effect on storage life and quality of fruit and control post-harvest decay fungi. The results showed that the lowest percentage weight loss and. infected fruit and highest percentage of fruit juice and anthocyanin related to treatment Calcium chloride 2%, which was significantly different from other treatments. highest acidity and carotenoid and the lowest total soluble solid and pH Fruit ju