Skip to main content

Table 2 Effect of nitrogen supplementation on the total chlorophyll, carotenoids and gas exchange parameters in Triticum aestivum L subjected to salinity stress. Data is mean (±SE) of three replicates. Values followed by different letters are significantly different at P < 0.05

From: Nitrogen availability prevents oxidative effects of salinity on wheat growth and photosynthesis by up-regulating the antioxidants and osmolytes metabolism, and secondary metabolite accumulation

 ControlNaClN1N2NaCl + N1NaCl + N2
Total Chlorophyll (mg g− 1 FW)1.621 ± 0.045c0.9105 ± 0.016e2.134 ± 0.131b2.645 ± 0.142a1.326 ± 0.0532d1.730 ± 0.050c
Carotenoids (mg g− 1 FW)0.4620 ± 0.011c0.3011 ± 0.010e0.5123 ± 0.013b0.6803 ± 0.012a0.3982 ± 0.011d0.4709 ± 0.014c
Photosynthetic rate (μmol CO2 m−2 s− 1)11.81 ± 0.54d7.73 ± 0.51e17.21 ± 1.01b24.34 ± 1.21a13.33 ± 0.45c16.92 ± 1.001b
Net intercellular CO2 (μmol m− 2 s− 1)226.1 ± 7.12d176.1 ± 6.15e298.3 ± 9.15b341.1 ± 9.98a222.9 ± 6.99d254.9 ± 8.012c
Stomatal conductance (mmol m− 2 s− 1)312.1 ± 8.52d246.3 ± 7.01e398.1 ± 10.21b441.9 ± 15.01a314.6 ± 8.11d371.2 ± 9.77bc
Transpiration rate (mmol H2O m− 2 s− 1)3.14 ± 0.10c1.72 ± 0.011e4.14 ± 0.14b4.72 ± 0.13a2.33 ± 0.031d3.008 ± 0.21c