Saeedi Mahin, Shirzad Habib, Noruzi Parviz, Ghasemi Ghader
Department of Horticultural Science, Faculty of Agriculture, Urmia University, Urmia, Iran.
Horticulture Crops Research Department, West Azerbaijan Agricultural and Natural Resources Research and Education Centre, Agricultural Research, Education and Extension Organization (AREEO), Urmia, Iran.
Sci Rep. 2024 Dec 28;14(1):30943. doi: 10.1038/s41598-024-81936-4.
Strawberry (Fragaria × ananassa) is a horticultural crop known for its sensitivity to mechanical damage and susceptibility to postharvest decay. In recent years, various strategies have been implemented to enhance both the yield and quality of strawberries, among which the application of nitric oxide-producing compounds has garnered special attention. The present study aimed to investigate the effects of varying concentrations of sodium nitroprusside (SNP), specifically 0, 200, 400, and 600 μM, on strawberries (cv. Camarosa) cultivated in a soilless culture system. It was attempted to identify optimal treatment concentrations that would improve the quality and yield of the strawberries. The analysis of variance revealed significant differences (p ≤ 0.01) in all morphological and phytochemical properties, as well as antioxidant and enzymatic activities, between the treated samples and the control group. Notably, the highest concentrations of total phenolics, phenylalanine ammonia-lyase (PAL) enzyme activity, guaiacol peroxidase enzyme activity, and potassium content in the fruit were recorded at the 400 μM SNP treatment. Specifically, these values were 6.67 mg GAE 100 g⁻ FW, 57.42 nmol g⁻ FW min⁻, 0.183 μmol HO min 100 ml extract, and 5.9% DW, respectively. Furthermore, the 200 μM SNP treatment yielded the highest ascorbic acid content (0.587 mg AA 100 g FW) and the lowest 50% inhibitory concentration for free radicals at 44.18 μl. In contrast, the 600 μM treatment resulted in the highest total flavonoid content (0.529 mg QE 100 g⁻ FW). In conclusion, the findings indicated that SNP treatment can effectively enhance the yield and improve the quality and marketability of the strawberry fruit.
草莓（Fragaria × ananassa）是一种园艺作物，以其对机械损伤敏感和采后易腐烂而闻名。近年来，人们实施了各种策略来提高草莓的产量和品质，其中应用产一氧化氮的化合物受到了特别关注。本研究旨在探讨不同浓度的硝普钠（SNP），即0、200、400和600 μM，对无土栽培系统中种植的草莓（品种Camarosa）的影响。试图确定能提高草莓品质和产量的最佳处理浓度。方差分析显示，处理样品与对照组在所有形态和植物化学特性以及抗氧化和酶活性方面存在显著差异（p≤0.01）。值得注意的是，在400 μM SNP处理下，果实中的总酚含量、苯丙氨酸解氨酶（PAL）酶活性、愈创木酚过氧化物酶活性和钾含量最高。具体而言，这些值分别为6.67 mg GAE 100 g⁻¹ FW、57.42 nmol g⁻¹ FW min⁻¹、0.183 μmol H₂O₂ min⁻¹ 100 ml提取物和5.9% DW。此外，200 μM SNP处理产生了最高的抗坏血酸含量（0.587 mg AA 100 g FW），并且在44.18 μl时对自由基的50%抑制浓度最低。相比之下，600 μM处理导致总黄酮含量最高（0.529 mg QE 100 g⁻¹ FW）。总之，研究结果表明SNP处理可以有效提高草莓果实的产量，改善其品质和适销性。
