. 2021 Jan 7;7(1):e05908. doi: 10.1016/j.heliyon.2021.e05908

Table 3.

Effect of salicylic acid foliar spray on drought stress and non-stressed plants on photosynthetic parameters and catalase.

Treatment	SA (mM)	Net photosynthesis (μmol co₂ m⁻² s⁻¹)	Stomatal conductance (mmol (H₂O) m⁻² s⁻¹)	Internal CO₂ concentration (μmolmol⁻¹)	Transpiration rate (m⁻²s⁻¹ mmol)	photosynthetic water use efficiency (mol⁻¹ μmol co₂)	Carboxylation efficiency (m⁻²s⁻¹ mmol)
Control	0	6.81 ± 0.44^b	0.63 ± 0.03^a	393.46 ± 0.88^c	6.76 ± 0.88^b	1.07 ± 0.30^d	0.017 ± 0.88^b
Control	0.5	8.75 ± 0.69^a	0.63 ± 0.04^a	388.56 ± 0.88^d	7.84 ± 0.88^a	1.18 ± 0.48^c	0.023 ± 0.88^a
Drought	0	2.81 ± 0.37^d	0.12 ± 0.01^c	407.91 ± 0.88^a	1.13 ± 0.88^c	2.48 ± 0.195^b	0.006 ± 0.88^c
Drought	0.5	3.57 ± 0.41^c	0.23 ± 0.02^b	398.84 ± 0.88^b	1.32 ± 0.88^c	2.70 ± 0.254^a	0.007 ± 0.88^c

In each column different letters (a–f) mean significant differences at P ≤ 0.05. Means ± S.D from the three experiments.