Improving the physiological characteristics and element concentrations of Echinacea purpurea L. with selenium application under salinity stress conditions

Document Type : Original Article

Authors

1 Ms. C. Student of Department of Agricultural Science and Engineering, SR. C., Islamic Azad University, Tehran, Iran

2 Assistant Professor of Department of Agricultural Science and Engineering, SR. C., Islamic Azad University, Tehran, Iran

3 Islamic Azad University

10.22092/mpt.2025.369275.1185

Abstract

Salinity is one of the most destructive stresses that reduce the production and yield of agricultural products in all regions of the country. In this regard, the present study was conducted to investigate the morphophysiological characteristics and element concentrations of purple coneflower (Echinacea purpurea L.) under salinity stress at three levels (0, 50, and 100 mM) and selenium dioxide nanoparticles (no foliar application (control), 50 and 100 mg/L); in a factorial design based on a completely randomized design with three replications. The results showed that 100 mM NaCl salinity stress significantly reduced plant morphological traits (plant height, shoot dry weight, and photosynthetic pigments). The use of selenium nanoparticles reduced the effect of salinity stress in purple coneflower. The highest amount of phenol and total flavonoids was observed in the 50 mM treatment (mild salinity stress). The results showed that purple coneflower is sensitive to salinity stress and the reduction in yield was quite evident. Therefore, according to the results of this study, foliar spraying of 100 mg of selenium dioxide nanoparticles can be recommended to reduce the negative effects of salt stress in purple coneflower plants.

Keywords

Technology of Medicinal and Aromatic Plants of Iran
Volume 6, Issue 2 - Serial Number 11
January 2025
Pages 143-126

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