ISHS Acta Horticulturae 674: III International Symposium on Applications of Modelling as an Innovative Technology in the Agri-Food Chain; MODEL-IT
MODELLING FRUIT QUALITY IN VARIABLE TEMPERATURE SCENARIOS: CAN WE ASSUME HISTORY INDEPENDENCE? |
| Authors: | A.R. East, A.J. Mawson, D.J. Tanner, K.M. Maguire, J. Jobling |
| Keywords: | Malus domestica; intermittent warming; time-temperature-tolerance hypothesis; ethylene production |
| Abstract:
Models developed for prediction of fruit physiology and/or quality in variable temperatures often apply the time-temperature-tolerance hypothesis, assuming that the temperature change itself does not have an effect on subsequent fruit behaviour. This assumption is in contrast to evidence provided by pre-storage heat treatments and intermittent warming studies. Data was collected with Pink Lady™ apples, mimicking a commercial coolchain scenario, where fruit were exposed to 20°C for 0, 1, 3, or 6 days before returning to storage. Fruit exposed to 20°C were induced to an altered physiological state on return to coolstorage (as evidenced by a doubling in ethylene production) although this did not correspond to changes in respiration rate or the rate of loss of quality parameters measured. These results are discussed with respect to current modelling techniques. | |
Download Adobe Acrobat Reader (free software to read PDF files) | |
