In this research the effect of foliar application of selenium (Se) at four levels (Na₂OSe₄; 0, 5, 10 and 20 mg L⁻¹) was evaluated on some phytochemical characteristics of Sultana grapevine under different salinity levels (NaCl; 0 or 75 mM). The vines were fed twice a week with Hoagland nutrient solution and Se was foliar applied twice with 24 intervals. During growing period, plant height, leaf number and leaf area were recorded. Moreover, at the end of experiment, mature leaves from middle nods of canes were used for measurement of some phytochemical indices. According to results, Se application had a positive effect on plant height, leaf numbers, leaf area and photosynthetic pigments content especially at 5 mg L⁻¹ and to some extent 10 mg L⁻¹ Se levels. Under salinity stress, foliar application of Se at 5 mg L⁻¹ considerably decreased vines leaves electrolyte leakage and lipid peroxidation values compared to non se-treated plants under salinity stress condition. Selenium had an additive effect on salinity stress (75 mM NaCl) induced accumulation of total phenol, total flavonoid, soluble sugars and proline content in leave of vines. Moreover, the interaction of salinity and Se at 5 and 10 mg L⁻¹ improved leaves antioxidant enzymes activities in Sultana grapevine. Likewise, foliar application of Se improved leaf mineral content in 75 mM NaCl -treated vines. Totally, foliar application of selenium (Se at 5 or 10 mg L⁻¹) increased salt tolerance through improvement in nutritional balance and by enzymatic and non-enzymatic antioxidant capacity in grapevine leaves.

在这项研究中，评估了在不同盐度水平下（NaCl; NaCl；Na ₂ OSe ₄；0、5、10和20 mg L ^-1）四个水平下叶面施用硒（Se）对苏丹娜葡萄的某些植物化学特性的影响。 0或75 mM）。每周给葡萄树喂两次Hoagland营养液，并以24个间隔将其叶面喷施两次Se。在生长期间，记录植物的高度，叶数和叶面积。此外，在实验结束时，使用来自藤茎中点的成熟叶片来测量一些植物化学指标。根据结果​​，硒的施用对株高，叶数，叶面积和光合色素含量具有积极影响，特别是在5 mg L ^-1时在一定程度上达到10 mg L ^-1 Se水平。在盐分胁迫条件下，与非硒处理的植物相比，在盐分胁迫下叶面施用5 mg L ^-1的Se可以大大减少葡萄藤的电解质泄漏和脂质过氧化值。硒对盐分胁迫（75 mM NaCl）诱导的葡萄藤中总酚，总黄酮，可溶性糖和脯氨酸含量的积累具有累加作用。此外，盐和硒在5和10 mg L ^-1下的相互作用改善了苏丹娜葡萄的叶片抗氧化酶活性。同样，叶面喷施硒可以改善75 mM NaCl处理的葡萄藤中的叶片矿物质含量。总共叶面施用硒（硒含量为5或10 mg L ^-1）通过改善营养平衡以及葡萄叶中的酶促和非酶促抗氧化能力提高了耐盐性。