Fig. 8.
Effect of anaerobic treatment and subsequent relief from anaerobiosis. The patterns of ethanol (open circles) and acetaldehyde (filled circles) emissions from single batches of three, 14-day-old, FR13A rice seedlings were measured by online laser photoacoustics. The plants were placed in the dark and given an anaerobic treatment for 0.5 h (A), 1 h (B), 2 h (C), 4 h (D), 6 h (E), 8 h (F), 10 h (G) or 14 h (H) by enclosing them in a cuvette supplied with nitrogen gas flowing at 2 L h−1 (grey horizontal bars). Afterwards, the plants were returned to a flow of air (2 L h−1) while ethanol and acetaldehyde output continued to be measured (Boamfa et al. 2003).