Regulation of propylene-induced ripening and ethylene biosynthesis by oxygen in `Hayward' kiwifruit
G. Stavroulakis and E. Sfakiotakis
Postharvest Biology and Technology Vol: 10 Issue: 3 Pages: 189-194.
1997
บทคัดย่อ
Kiwifruit, cv Hayward, were treated with 130
l/l
propylene under 1, 5, 10, 13, 16, and 21% O2 concentrations in a
continuous flow-through system at 20°C. Control kiwifruit were
kept in air (21%O2). Flesh firmness, soluble solids content,
internal ethylene concentration, 1-aminocyclopropane-1-carboxylic acid
concentration (ACC), malonyl-1-aminocyclopropane-1-carboxylic acid
concentration (MACC), and EFE capacity were measured during the experiment.
Ethylene biosynthesis and fruit ripening were stimulated when kiwifruit were
exposed to a mixture of propylene in 21% O2. Reduction of oxygen
concentration (< 10%) inhibited the effectiveness of propylene on
autocatalytic ethylene production possibly through a reduction in ACC
concentration in the tissue. Exposure of kiwifruit to low oxygen concentrations
(< 5%) delayed propylene-induced fruit ripening.