Qamar sufan(1)* and Ahmed Soufi(1)
(1). Department of Field Crops, Faculty of Agriculture, Tishreen University, Lattakia, Syria.
(*Corresponding author: Dr. Qamar Sufan, email: 123qamar456@gmail.com, phone:00963994870211).
Received: 6/4/2024 Accepted: 29/7/2024
Abstract:
This study was conducted to evaluate the effects of foliar spraying with salicylic acid on growth of flax plants under salt stress conditions in Burj Islam village, Latakia, Syria in 2023-2024. A factorial trial based on a randomized complete design (R.C.D.) with three replications was used. The treatments consisted of three salinity levels (4, 6 and 8) ml/cm2 and three salicylic acid concentrations (25, 50 and 75) mg/liter. Traits such as: morplological (plant height and number of branches), Biochemical (leaf content of chlorophyll, proline) and productivity (number of capsules per plant, number of seeds per capsules and weight of thousand seed) were measured. The results of the study showed that salinity levels and salicylate concentrations significantly affected (P<0.05) the studied indicators, and as salinity increased, the properties of all studied indicators decreased except for proline content which reached value (1.58) µM/g. Comparisons of averages indicated an improvement in the vegetative growth Characteristics (plant height 78 cm and number of branches 5.08 branch), biochemical indicators (leaf content of chlorophyll 225 µg/g), and studied plant productivity (number of capsules per plant 169 capsules, number of seeds per capsules 8 seeds and weight of thousand seed 5.96 seeds) when treated with salicylic acid, especially at a concentration of 25 mg/liter. The interaction between salinity and salicylic acid led to significant effects on the studied indicators. Low concentrations lead to a relative improvement in the studied morphological, biochemical and production characteristics, and the A1S1 treatment outperformed all treatments and the control.
Keywords: salicylic acid, salt stress, Flax, proline.
Full paper in Arabic: PDF