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specialty journal of biological sciences
Volume 4, 2018, Issue 2
Influence of Brassinosteroid (Brs) In Roots and Foliar Spray Against Salinity on Physiological Parameters and Micro Nutrients Upon Tomato (Lycopersicon Esculentum Mill)
Muhammad Irfan, Jan Alam, Gul Jan, Humaira Gul
Pages: 18-27

Abstract

The different physiological parameters viz. chlorophyll, carotenoids, carbohydratrates, proteins and micro nutrients concentrations of Lycopersicon esculentum were observed under different salt concentrations from control (non-saline), 60mM NaCl and 100mM NaCl solutions. The rates of different physiological parameters and micro nutrients’ concentrations exhibited decreases in saline media in comparison with their respective controls while brassinosteroids were used exogenously as a foliar spray and in roots at the concentration of 0.25 ppm and 0.50 ppm, and showed a promotion in the non-saline control when compared to salt concentrations’ media. In physiological parameters analysis i.e. Chlorophyll a, Chlorophyll b, Chlorophyll a/b ratio, total chlorophyll, carotenoids, total carbohydrates and total proteins were studied and treated against different NaCl concentrations i.e. 60 and 100mM. Salt concentrations showed an increase in NaCl media compared to their controls, while plants treated with brassinosteroids at 0.25 ppm and 0.50 ppm, which were applied as a foliar spray and in roots, showed an increase in all physiological parameters analysis in control and at 60mM NaCl concentration. Amongst the micro nutrients, the ionic composition i.e. Na, K and Na/K ratio showed that plants treated with different NaCl concentrations at 60mM NaCl and 100mM salt concentrations showed an increase in Na and K ions, and brassinosteroids applied exogenously as a foliar spray and in roots showed a decrease in Na and K ions.





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specialty journal of biological sciences
Issue 4, Volume 5, 2019