Aril whitening (AW) or aril paleness is a physiological disorder in pomegranate fruit that occurs during fruit growth and developmental stages in main production areas in Iran, resulting to decrease in fruit quality. The aim of this study was to investigate the influence of preharvest green net shading and postharvest treatments of salicylic acid (SA) or hot water (HW) on fruit quality parameters and bioactive compounds of pomegranate cv. Ghojagh at harvest and during storage. This experiment was carried out on fruit of nine-year-old pomegranate trees growing under open field as control and trees covered under green 50% net shading for duration of about 4 months (June until the September, warmest months of the growth season). The fruits were harvested at the commercial stage and transferred to the laboratory, where subsequently treated by immersing in hot water (45 ºC) for 4 min or 2 mM SA at room temperature (2 min). As control postharvest treatment, a part of fruits were treated only with water for 4 min at room temperature. The fruits were then air-dried and transferred into a refrigerated storage at 4 ± 1 ºC, 80 ± 5% RH for a period of 90 days. A significant reduction in aril whitening, as well as fruit sunburn and cracking was observed from trees under 50%-green net shading in comparison with the control non-shading trees. Fruits of net shading had significantly higher bioactive compounds (ascorbic acid, phenolics and anthocyanin, antioxidant activity), less weight loss and lower chilling injury than the non-shading fruits during storage. Also, postharvest treatments, especially SA, had a good impact on reducing chilling injury and retaining the quality and nutritional value of pomegranate fruits.

假种皮白化（AW）或假种皮苍白是伊朗主要产区的石榴果实生长发育阶段出现的一种生理疾病，导致果实品质下降。本研究的目的是调查采前绿网遮荫和采后处理水杨酸 (SA) 或热水 (HW) 对石榴果实品质参数和生物活性化合物的影响。Ghojagh 在收获和储存期间。本实验以在开阔地生长的 9 年树龄石榴树果实为对照，在 50% 的绿色净荫下覆盖约 4 个月（6 月至 9 月，生长季节最温暖的月份）。果实在商业阶段收获并转移到实验室，随后在室温下（2 分钟）浸入热水（45 ºC）中 4 分钟或 2 mM SA 进行处理。作为对照采后处理，部分果实在室温下仅用水处理4分钟。然后将果实风干并转移到 4 ± 1 ºC、80 ± 5% RH 的冷藏库中 90 天。与对照不遮荫的树木相比，在 50% 的绿色净遮荫下的树木观察到假种皮白化以及果实晒伤和开裂的显着减少。与非遮光水果相比，净遮光水果在贮藏期间具有显着更高的生物活性化合物（抗坏血酸、酚类和花青素、抗氧化活性）、更少的重量损失和更低的冷害。此外，采后处理，尤其是 SA，