Table 3 Effect of different concentrations of ZNO_St-NP on chlorophyll fluorescence parameters (Phi2, phinpq, qL, npqt, phino, Fv′Fm′) of Zea Mays growing in two different concentration of salinity stress (no SS—0 and SS—200 mM NaCl).

0

0

0.24 ± 0.03^h

0.65 ± 0.02^a

0.52 ± 0.10^h

6.78 ± 0.43^a

0.097 ± 0.001^gh

0.386 ± 0.01^h

30

0.33 ± 0.05^fg

0.55 ± 0.15^b

0.65 ± 0.06^ef

5.18 ± 2.21^c

0.104 ± 0.04^ef

0.432 ± 0.12^fg

60

0.40 ± 0.05^cd

0.48 ± 0.07^de

0.67 ± 0.05^de

4.44 ± 1.45^d

0.110 ± 0.01^cd

0.452 ± 0.06^de

80

0.43 ± 0.11^bc

0.38 ± 0.07^fg

0.70 ± 0.03^bc

4.26 ± 1.16^f

0.124 ± 0.01^bc

0.481 ± 0.06^bc

200

Control

0.36 ± 0.07^ef

0.54 ± 0.09^bc

0.74 ± 0.08^a

5.71 ± 2.14^b

0.099 ± 0.001^fg

0.438 ± 0.07^ef

30

0.37 ± 0.87^de

0.49 ± 0.10^cd

0.68 ± 0.08^cd

4.38 ± 1.86^de

0.108 ± 0.001^de

0.459 ± 0.07^cd

60

0.45 ± 0.12^b

0.42 ± 0.51^f

0.62 ± 0.08^fg

3.96 ± 1.53^g

0.126 ± 0.002^b

0.464 ± 0.10^b

80

0.47 ± 0.04^a

0.36 ± 0.05^gh

0.71 ± 0.^07ab

2.72 ± 0.91^h

0.146 ± 0.001^a

0.519 ± 0.049^a