Impact of salicylic acid foliar application on two wheat cultivars grown under saline conditions

Abstract

Salinity is one of the limiting factors in agricultural production of all crops in the world specifically in cereals crops. There are different ways to decrease the effect of salinity on growth and production of all plants. One of these ways is using salicylic acid which is plant growth regulator; it is able to increase the salt tolerance in crops. The aim of this work was to study salicylic acid effects on alleviation salinity stress and enhance plant growth parameters, physical characteristics, biochemical constituents, element contents, and production of two wheat varieties grown under salinity stress conditions in the North West area of Egypt. The experiment was designed in split plot with using four replicates. The two wheat varieties; Giza 168 a salt sensitive variety and Sakha 93 a salt tolerant variety were used with salicylic acid (SA) foliar application treatments: control, SA100 (100 mg salicylic acid/ L), SA200 (200 mg salicylic acid/ L) and SA400 (400 mg salicylic acid/ L) were applied during tillering and booting initiation stages. Results cleared that salicylic acid foliar application decreased the damage effects of salinity stress in both wheat cultivars especially, in Giza168 which was more sensitive to salinity by increasing growth and production of antioxidant such as ascorbic acid and protect both protein and chlorophyll from breakdown by free radicals. Foliar application of salicylic acid increased grain and straw yield of studied wheat cultivars and also increased potassium content and decreased Na: K ratio in straw. Overall, it can be suggested that foliar application of Salicylic acid is effective strategy to improve wheat productivity under salinity stress especially, for salt sensitive cultivars.

Heavy metal induced regulation of plant biology: Recent insights

“…Along with ABA, it was applied to plants to regulate the drought conditions (Miura & Tada, 2014). Salicylic acid regulates temperature, salt, HM stress and ultimately cell death and provides resistance in conditions caused due to hypersensitive responses (Fahad & Bano, 2012; Khanna et al, 2016). In Hordeum vulgare roots, salicylic acid content was found to increase during exposure toCd and ameliorate Cd stress by activating the pathways that can detoxify Cd, apart from modulating the antioxidant defence system (Metwally et al, 2003).…”

Potassium Nitrate and Ascorbic Acid Priming Improved Tissue Chemical Composition and Antioxidant and Antimicrobial Activities of Linseed (Linum usitatissimum L.) Sprouts

“…The role of AsA in enhancing photosynthesis, seed germination, leaf development, and inducing antioxidant levels is well known . In addition, AsA treatment affects the selectivity of mineral uptake; for instance, it reduces the Na + /K + ratio to protect plant cell membranes . Xia’s results indicate that priming with AsA could effectively alleviate aging damage in oat seeds…”

“…16 In addition, AsA treatment affects the selectivity of mineral uptake; for instance, it reduces the Na + /K + ratio to protect plant cell membranes. 17 Xia's results indicate that priming with AsA could effectively alleviate aging damage in oat seeds. 14 It is important to indicate that the effectiveness of priming treatments can vary depending on the plant species, plant developmental stage, and environmental conditions.…”

“… 16 In addition, AsA treatment affects the selectivity of mineral uptake; for instance, it reduces the Na + /K + ratio to protect plant cell membranes. 17 Xia’s results indicate that priming with AsA could effectively alleviate aging damage in oat seeds. 14…”

Effect of Irrigation Intervals and Foliar Spray with Salicylic Acid on the production of Two Bread wheat cultivars in Newly Reclaimed Land

“…Improving WUE in the crop production sector includes improving land cultivation, developing droughttolerant genotypes, and applying special agriculture practices (El-Hendawy, 2016). Salicylic acid (2-hydroxybenzoic acid) is considered as of the phenolic compounds widely distributed in plant species it's a natural plant endogenous hormone it has a physiological effect on the growth and flowering of plants and the absorption of ions it gives plants systemic immunity against pathogens and helps plants to resist stresses resulting from temperature, drought, and salinity (EL-Nasharty et al, 2019). Sofy (2015) pointed out that drought stress at the grain filling stage significantly decreased plant height, spike length, number of grains spike -1 , 1000-grain weight in wheat plants, and mitigation of the adverse effects of drought via the application of salicylic acid.…”