نوع مقاله : مقاله پژوهشی
نویسندگان
1 گروه علوم باغبانی. دانشکده کشاورزی دانشگاه تهران، کرج . ایران
2 گروه علوم باغبانی دانشکده کشاورزی دانشگاه تهران، کرج. ایران
3 گروه علوم باغبانی. دانشکده کشاورزی دانشگاه تهران، کرج. ایران.
4 گروه علوم و مهندسی باغبانی و فضای سبز، دانشکده کشاورزی، دانشگاه تهران، کرج، ایران.
چکیده
کلیدواژه‌ها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
In this research, the impact of pre-harvest application of arginine (0, 1, 2, 3 Mm), citric acid (0, 1, 2, 3 Mm), and simultaneous treatment of arginine with citric acid (Arg 1 Mm with 1, 2, 3 Mm CA), (Arg 2 Mm with 1, 2, 3 Mm CA), (Arg 3 Mm with 1, 2, 3 Mm CA) were evaluated on chilling injury of Meykhosh -e-Yazd pomegranate fruit, as the pomegranate fruits were maintained in cold storage at 4±0.5 ºC and 85-90% Relative humidity for 120 days. The study was carried out as a factorial experiment based on randomized complete block design and three replications over two successive years. The results showed that the use of arginine and citric acid treatments improved the measured traits compared to the control. The treatments of arginine 2 mM, citric acid 3 mM and simultaneous treatment of arginine 2 mM and citric acid3mM had significantly less chilling injury than control fruits. Treated fruits showed higher levels of vitamin C and total acids. Citric acid and arginine treatments prevented the reduction of organic acids and titratable acid by reducing respiration and the speed of cell metabolic processes. Also treated fruits had a significant decrease in Ph, TSS, Electrolyte leakage and Malondialdehyde compared to the control. In general, the use of arginine and citric acid can be considered as a useful method to increase the tolerance of pomegranate fruits to chilling injury through the accumulation of antioxidant compounds.
کلیدواژه‌ها [English]
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