Changes in ethylene production during preharvest period in quince (Cydonia vulgaris L.) and the use of ethylene production to predict harvest maturity

TUNA GÜNEŞ N.

EUROPEAN JOURNAL OF HORTICULTURAL SCIENCE, cilt.68, sa.5, ss.212-221, 2003 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 68 Sayı: 5
  • Basım Tarihi: 2003
  • Dergi Adı: EUROPEAN JOURNAL OF HORTICULTURAL SCIENCE
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.212-221
  • Anahtar Kelimeler: 1-aminocyclopropane-1-carboxylic acid (ACC) oxidase, citric acid, ethylene production, flesh firmness, fructose, glucose, malic acid, sucrose, GOLDEN DELICIOUS APPLES, 1-AMINOCYCLOPROPANE-1-CARBOXYLIC ACID, FRUIT-DEVELOPMENT, COLOR DEVELOPMENT, STORAGE, BIOSYNTHESIS, FIRMNESS, RESPIRATION, MATURATION, CONVERSION
  • Ankara Üniversitesi Adresli: Evet

Özet

This research was carried out in order to determine changes in respiration rate, internal ethylene, external ethylene, 1-aminocyclopropane-1-carboxylic acid (ACC) oxidase activity, flesh firmness, fruit colour, sugar (sucrose, glucose and fructose) and organic acid (citric and malic) during preharvest maturity period in 'Esme' and 'Cukurgobek' quince cultivars and to present the usability level of especially ethylene production as harvest criterion in quince. For this reason, fruits were sampled at weekly intervals from 90(th) day after full bloom till the beginning of climacteric rise in respiration rate. Either internal or external ethylene production was fluctuated during preharvest period. However, ethylene production did not tend to increase sharply while respiration rate was decreasing. Correlation coefficients and variation between years proved that ethylene production could not be used as harvest criterion. Internal ethylene production of 'Esme' and 'Cukurgobek' cultivars were changed between 0.1-1.7 mul l(-1) and 0.2-4.7 mul l(-1), external ethylene between 0-1.8 mul kg(-1) h(-1) and 0-2.4 mul kg(-1) h(-1), activity of ACC oxidase enzyme between 0-0.9 mul l(-1) and 0-1.9 mul l(-1), respectively. While regular decreases in flesh firmness of quince fruits during preharvest period were observed, increases with fluctuations in sugar and organic acid content were determined. In this research, fructose and malic acid were found as the dominant sugar and organic acid in quince.