In this study the effects of reflective mulches on postharvest fruit quality of ‘Malas Shahreza’ pomegranate was investigated. The experiment was set up as factorial experiment in completely randomized design with two factors, including various colors of reflective mulches at four levels (unmulched soil, silver, yellow and white mulch) and various chemicals at five levels (fulvic acid 2 and 4 g L-1, ascorbic acid 100 and 200 ppm and distilled water) and 4 replications. Reflective mulches was spread 43 days before the harvest. After the harvest, fruits was be sampled and anthocyanin, ascorbic acid, total soluble solids, total acid, phenolic compounds, and color indexes and antioxidant activity was eva‎luated. The results showed that silver reflective mulch increased anthocyanin content of peel and juice, phenolic compounds, ascorbic acid concentration, total soluble solids and carbohydrate contents of fruits but decreased total soluble solids of fruit juice compared to trees cultivated in unmulched soil. The colorimetric result showed that although, all applied reflective mulches of silver, yellow and white continued to be effective in increasing fruit red color, silver reflective mulch treatment was numerically superior to others, increased the red color and a* index. The results also showed ascorbic acid treatment increased the content of juice anthocyanin, total phenolic compounds and peel carbohydrates. The chemical treatment of fulvic acid aimed at improving the water balance not only increased anthocyanin content of juice, carbohydrate contents of juice and peel, antioxidant activity and fruit weight, but also decreased cell sensitivity to sunburn.

مهديه غلامي , بهرام باني نسب

احمد ميره اي

نعمت اله اعتمادي شلمزاري , لادن طلايي