RT - Journal Article T1 - The effect of nano selenium and sodium selenate on biochemical, physiological, and growth parameters of Bell pepper (Capsicum anumm) JF - nbr YR - 2023 JO - nbr VO - 9 IS - 4 UR - http://nbr.khu.ac.ir/article-1-3463-en.html SP - 296 EP - 306 K1 - ascorbate peroxidase K1 - catalase K1 - malondialdehyde K1 - peroxidase K1 - phenol K1 - polyphenol oxidase AB - Selenium, a non-essential element for plants, is essential for animals as well as human beings. Although the role of selenium in plants is yet to be properly understood, previous researches have shown that this element can affect plant growth and metabolism. In this study, the effect of foliar application of selenium nanoparticles (0, 5, 10, and 20 mg/L) and sodium selenate (0, 5, 10, and 20 mg/L) on the physiological and biochemical responses of bell pepper (Capsicum anumm L.) was investigated. The potential changes in various growth and biochemical indices were evaluated in response to the treatments. According to the results, selenium treatments at concentrations of 10 and 20 mg/L reduced the biomass accumulation in both roots and shoots. These treatments also increased the content of hydrogen peroxide and malondialdehyde. The foliar application of selenium led to the increase of the concentrations of soluble phenols, proline and thiols. The activity of antioxidant enzymes including catalase, peroxidase, ascorbate peroxidase, and polyphenol oxidase were increased in response to the selenium treatments. The protease activity displayed a similar upward trend following the selenium treatments. LA eng UL http://nbr.khu.ac.ir/article-1-3463-en.html M3 ER -