Folia Horticulturae

Current issue content   Search      

Ethylene production and activity of ACC oxidase in lettuce leaves stored under different temperature conditions

Anna Mareczek, Maria Leja, Stanisław Rożek, Jan Myczkowski

Department of Plant Physiology
Faculty of Horticulture, Agricultural University
29 Listopada 54, 31-425 Kraków, Poland

In the leaves of Prado and Oresto cultivars of lettuce, grown in a plastic tunnel, a high activity of ACC oxidase and high level of ethylene evolution were found two hours after harvesting. During subsequent storage at 5°C and 20°C a rapid decrease in ability for synthesis of this gas was observed. The investigated cultivars varied with the level of produced ethylene. Plants fertilized with nitrogen in the form of NO3 showed greater synthesis of this gas than those treated with urea. Low temperature delayed the rate of ethylene decrease, particularly after 1 day of storage. Cell membrane permeability increased significantly only in the case of lettuce stored at 20°C, treated during growing with a nitrate form of nitrogen fertilizer.

Mareczek A., Leja M., Rożek S., Myczkowski J., 1996. Ethylene production and activity of ACC oxidase in lettuce leaves stored under different temperature conditions. Folia Horticulturae 8/1: 85-92.