3. Results and discussion
Exposing tomato gel tissue excised from immature fruit to continuous air-flow 4.5 mmol l − 1 C2H4 significantly reduced tissue C2H4 production in comparison with that exposed to C2H4-free air.
The opposite trend however, was observed when gel tissue excised from fruit at the pink stage was exposed to C2H4 or when excised immature gel tissue showed red colour development after 8 days of continuous C2H4 exposure (Fig. 1).