Effects of Salicylic Acid on the Growth and Some Physiological Characters in Salt Stressed Wheat (Triticum aestivum L.)

Abstract

This study was conducted to determine the effects of seed soaking in salicylic acid (10 -2 mol/L, 10 -4 mol/L, 10 -6 mol/L and control) on the growth and some physiological characters in wheat (Triticum aestivum L.) under salinity (8 ds m -1 ) and non salinity conditions. NaCl reduced the emergence percentage, the growth parameters (shoot and root dry weight), K + /Na + ratio, osmotic potential and photosynthetic pigments (Chl a, b and carotenoids) contents in wheat seedlings. The emergence percentage was not changed, in contrast, shoot and root dry weight of seedlings, K + /Na + ratio, photosynthetic pigments (Chl a, b and carotenoids) contents and osmotic potential were increased by salicylic acid treatments under non salinity condition. Seed soaking in SA increased the emergence percentage, osmotic potential, shoot and root dry weight, K + /Na + ratio, photosynthetic pigments (Chl a, b and carotenoids) contents in the salinity stressed wheat seedlings. These results were indicated that SA has positive effects on plant growth in salinity and non salinity conditions. But the effects of SA was higher on emergenge percentage, K + /Na + ratio and osmotic potantial in salinity condition compared to non salinity condition was obtained in this study.

Seed Priming Modulates Physiological and Agronomic Attributes of Maize (Zea mays L.) under Induced Polyethylene Glycol Osmotic Stress

“…Drought stress is the major cause of crop loss as it reduces yield components, such as reduction in the leaf size and number of grains . A major proportion of agriculture land is affected with varying degrees of drought and low atmospheric humidity leading to drought, which is the limiting factor for better plant performance and higher crop yield. , A proper amount of soil moisture is compulsory for plant growth, transpiration, and also for transportation of food prepared in the process of photosynthesis in leaves . A number of strategies have been devised to overcome the adverse effects of abiotic stresses, such as the selection in vitro propagation of drought resistant cultivars, germplasm, and plant breeding methods, but all these strategies are expensive.…”

“…33 , 34 A proper amount of soil moisture is compulsory for plant growth, transpiration, and also for transportation of food prepared in the process of photosynthesis in leaves. 35 A number of strategies have been devised to overcome the adverse effects of abiotic stresses, such as the selection in vitro propagation of drought resistant cultivars, 36 germplasm, 37 and plant breeding methods, 38 but all these strategies are expensive. However, an alternative strategy for the possibilities to overcome salt and drought stresses is seed priming.…”

Integrative application of silicon and/or proline improves Sweet corn (Zea mays L. saccharata) production and antioxidant defense system under salt stress condition

“…Salinity in the soil made it difficult for plant roots to get water, which had bad results on the water quality. High respiration rates are linked to metabolic disorders because they hurt meristematic activity and cell elongation, which hinder plant growth and productivity in salty soil 56 , 57 .…”

Potential Role of Plant Growth Regulators in Administering Crucial Processes Against Abiotic Stresses

“…Exogenous SA application is reported to be positively connected with enhanced tolerance of plants to different abiotic stresses via stimulating the activity of antioxidant defense enzymes (Kaydan et al, 2007;Ashraf et al, 2010). Furthermore, SA plays numerous essential roles in photosynthetic rate, stomatal conductance, transpiration, switching antioxidative defense system and inhibiting Na + , and Cl − accumulation (Arfan et al, 2007;Gunes et al, 2007;Xu et al, 2008;Fayez and Bazaid, 2014).…”