Salinity stress is a significant challenge in agricultural production. When soil contains high salts, it can adversely affect plant growth and productivity due to the high concentration of soluble salts in the soil water. To overcome this issue, foliar applications of methyl jasmonate (MJ) and gibberellic acid (GA3) can be productive amendments. Both can potentially improve the plant's growth attributes and flowering, which are imperative in improving growth and yield. However, limited literature is available on their combined use in canola to mitigate salinity stress. That's why the current study investigates the impact of different levels of MJ (at concentrations of 0.8, 1.6, and 3.2 mM MJ) and GA3 (0GA3 and 5 mg/L GA3) on canola cultivated in salt-affected soils. Applying all the treatments in four replicates. Results indicate that the application of 0.8 mM MJ with 5 mg/L GA3 significantly enhances shoot length (23.29%), shoot dry weight (24.77%), number of leaves per plant (24.93%), number of flowering branches (26.11%), chlorophyll a (31.44%), chlorophyll b (20.28%) and total chlorophyll (27.66%) and shoot total soluble carbohydrates (22.53%) over control. Treatment with 0.8 mM MJ and 5 mg/L GA3 resulted in a decrease in shoot proline (48.17%), MDA (81.41%), SOD (50.59%), POD (14.81%) while increase in N (10.38%), P (15.22%), and K (8.05%) compared to control in canola under salinity stress. In conclusion, 0.8 mM MJ + 5 mg/L GA3 can improve canola growth under salinity stress. More investigations are recommended at the field level to declare 0.8 mM MJ + 5 mg/L GA3 as the best amendment for alleviating salinity stress in different crops.

Department of Botany Hindu College Moradabad Moradabad India

Department of Botany The Islamia University of Bahawalpur Sub campus Rahim Yar Khan Rahim Yar Khan Pakistan

Department of Environmental Sciences Woman University Multan Multan Punjab Pakistan

Department of Geology and Pedology Faculty of Forestry and Wood Technology Mendel University in Brno Zemedelska 1 Brno 61300 Czech Republic

Department of Oral and Maxillofacial Surgery College of Dentistry King Saud University PO Box 60169 Riyadh 11545 Saudi Arabia

Department of Soil and Environmental Science The University of Agriculture Peshawar Pakistan

Department of Soil and Environmental Sciences Muhammad Nawaz Shareef University of Agriculture Multan Punjab Pakistan

Department of Soil Science Faculty of Agricultural Sciences and Technology Bahauddin Zakariya University Multan Punjab Pakistan

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