H₂S generation rate in <i>lcd</i> plants treated with PEG8000.

<p>Endogenous H₂S generation rate in <i>lcd</i> seedlings treated with 0.2 g ml⁻¹ PEG8000 for 2 h. Results are shown as mean ± SE (n = 3 independent experiments). Letter numbers indicate significant differences between treatmeats and substracts (<i>P<0.05</i>).