The effect of biochar application on some growth, physiological and biochemical traits of Thymus daenensis under different salinity levels

Zaremanesh, HADIS; Chegeni, Homayon; Faryabi, Elham; Hasanvand, Arefeh

doi:10.22034/jpr.2025.8591.3398

The effect of biochar application on some growth, physiological and biochemical traits of Thymus daenensis under different salinity levels

Articles in Press

Document Type : Research Paper

Authors

HADIS zaremanesh ¹

homayon chegeni ¹

elham faryabi ¹

arefeh hasanvand ²

¹ Department of Agriculture, Payame Noor University, Tehran, Iran

² Department of Biology, Payame Noor University, Tehran, Iran

10.22034/jpr.2025.8591.3398

Abstract

In order to investigate the effect of biochar application on the Thymus daenensis plant under salt stress, a factorial experiment was conducted based on randomized complete block design with three replications. The factors were salinity stress (0 and 100 mM NaCl) and biochar application (0, 1 and 2 %). The results showed that the average fresh weight of thyme in control conditions was equal to 25 g.plant-1, which decreased by 36% under salt stress. On the other hand, application of 1% and 2% of biochar increased the fresh weight of thyme by 7% and 14%, respectively, compared to the treatment without biochar application. Salinity stress caused a significant increase in the sodium content of shoot and a decrease in potassium content of shoot. On the other hand, the use of biochar, especially the level of 2%, caused a decrease in sodium content and an increase in potassium in shoot. Under salinity stress, the treatment without the application of biochar had the highest content of malondialdehyde (15.7 μmol.g fw-1), which was reduced by 23 and 45% in the treatments of 1% and 2% application of biochar, respectively. The highest activity of superoxide dismutase was related to the treatment without the use of biochar under salt stress conditions, and under the levels of 1 and 2% by weight of biochar, the activity of this enzyme decreased by 20% and 50%, respectively.

Keywords

abiotic stresses

oxidative stress

osmolytes

thyme

Subjects