ISHS Acta Horticulturae 701: XII International Symposium on Apricot Culture and Decline
MODELING THE APRICOT SUGAR CONTENTS IN RELATION TO FRUIT GROWTH |
| Authors: | M. Génard, F. Lescourret, J.M. Audergon, M. Reich, G. Albagnac |
| Keywords: | fruit quality, fruit growth, carbon, Prunus armeniaca |
| Abstract:
A model of sugar accumulation in the apricot flesh was developed. The model is dynamic and deterministic. It was designed to be driven by flesh dry weight growth curve, flesh water content, and by temperature data. It uses differential equations where the state of the system is defined by state variables that describe how much carbon is present as each form of sugar (sucrose, glucose and fructose) and as other compounds (acids and structural carbohydrates). The rates of change of these amounts of carbon depend on the current values of corresponding state variables and on the transfer functions between them. The model simulates the seasonal variations of the concentrations of sucrose, glucose and fructose, as well as the fruit sweetness. It was applied on data recorded on 'Bergeron' fruit in an INRA experimental farm (Gotheron) in the Rhone Valley (France). The predictions of the model were in good agreement with experimental data. | |
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