Table 3.
Effects of H 2 S donor NaHS and iron on AQE, Rd, Lcp, Lsp, Pmax, and CE of maize seedlings
| Variables | –Fe | –Fe+NaHS | +Fe | +Fe+NaHS |
|---|---|---|---|---|
| AQE | 0.014±0.002a | 0.038±0.004 b | 0.051±0.003 c | 0.050±0.001 c |
| Rd (μmol CO2 m−2 s−1) | 0.440±0.255 a | 0.989±0.052 b | 0.887±0.159 b | 1.040±0.050 b |
| Lcp (μmol m−2 s−1) | 34.80±9.14 a | 26.43±1.87 a | 17.16±2.17 b | 20.73±0.84 c |
| Lsp (μmol m−2 s−1) | 214.5±80.4 a | 226.7±16.2 a | 416.7±46.7 b | 562.3±7.86 c |
| Pmax (μmol CO2 m−2 s−1) | 2.74±0.71 a | 7.48±0.51 b | 20.20±1.78 c | 27.17±0.66 d |
| CE (mol m−2 s−1) | 0.036±0.024 a | 0.730±0.184 b | 2.819±0.055 c | 5.686±1.082 d |
Data are presented as means ±SE.
Different letters indicate significant differences at P<0.05 from different treatments.
–Fe, 1 μM Fe; –Fe+NaHS, seedlings were pre-treated with 100 µM NaHS and then treated with 1 µM Fe; +Fe, 50 µM Fe; +Fe+NaHS, seedlings were pre-treated with 100 µM NaHS and then treated with 50 µM Fe.