In order to determine respiratory pattern of hot pepper fruits, changes in CO₂ excretion, ethylene evolution, ethylene sensitivity, tissue-respiration, and mechanism involved in the climacteric rise were studied.
1. Changes in CO₂ excretion at room temperature indicated that there was a climacteric peek when 60% red color broke through the fruits.
2. Ethylene evolution was highest at climacteric stage, and sensitivity to ethylene was greatly increased at pre-climacteric stage, but not at post-cilmacteric stage.
3. Inhibitory actions of CH₂I COOH, NaF and malonate on respiration was increased at the climacteric stage.
4. A phenomenon of the malonate effect was observed.
5. No great changes in the value of proteinous nitrogen to total nitrogen contents was observed during the after-ripening period.
6. There was a certain change in the DNP influence at the climacteric stage. It is concluded therefore that hot pepper fruits show a typical climacteric type of respiration that many other pepper fruits demonstrate.
|