Journal Article

Effect of methyl jasmonate and GA3 on canola (Brassica napus L.) growth, antioxidants activity, and nutrient concentration cultivated in salt-affected soils

Sana, Sundas, Ansari, Mohammad Javed, Dawar, Khadim, Almoallim, Hesham S., Hussain, Muhammad Baqir, Datta, Rahul, Hareem, Misbah, Danish, Subhan

2024

Overview

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.

• Publisher: BioMed Central,BioMed Central Ltd,Springer Nature B.V,BMC
• Subject: Acetates - pharmacology / Agricultural production / Agricultural research / Agriculture / Antioxidants / Antioxidants - metabolism / Biomedical and Life Sciences / Brassica napus / Brassica napus - drug effects / Brassica napus - growth & development / Brassica napus - metabolism / Canola / Carbohydrates / Carotenoids / Chlorophyll / Chlorophyll - metabolism / Cyclopentanes - pharmacology / Environmental aspects / Flowering / Flowers & plants / Foliar applications / Gibberellic acid / Gibberellins / Gibberellins - metabolism / Gibberellins - pharmacology / Growth / Growth attributes / Growth hormones / Irrigation / Jasmonates / Life Sciences / Methyl jasmonate / Moisture content / Nutrient concentrations / nutrient content / Nutrients / Nutrients - metabolism / Nutrients concentration / Oxylipins - pharmacology / Physiological aspects / Physiology / Plant growth / Plant Growth Regulators - metabolism / Plant Growth Regulators - pharmacology / Plant Leaves - drug effects / Plant Leaves - growth & development / Plant Leaves - metabolism / Plant Sciences / Proline / Rape plants / Salinity / Salinity effects / Salinity stress / Salt / salt stress / Salt Stress - drug effects / Seeds / Shoots / Soil - chemistry / Soil moisture / Soil stresses / Soil water / Soils / Soils, Salts in / Statistical analysis / Tree Biology