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Muszaki, Hungary

Lakatos L.,DE AMTC | Szabo Z.,DE AMTC | Soltesz M.,DE AMTC | Nyeki J.,DE AMTC | And 2 more authors.
Acta Horticulturae

We analysed the effect of climatic variables (average temperature, maximum and minimum temperature, day and night temperature difference, precipitation and climatic water balance) on sour cherry quality parameters (dry matter concentration, sugar concentration, vitamin C content and total acid concentration of three sour cherry cultivars ('Debreceni botermo', 'Kántorjánosi', and 'Újfehértói fürtös') from 1998 to 2008. We could not find any significant differences in the weather tolerance of the varieties. Maximum temperature, the difference between day and night temperature, and minimum temperature all had a significant correlation with sour cherry quality. Minimum temperature showed a quadratic relationship with sugar content, while the difference between day and night temperatures showed a quadratic relationship with dry matter content. The other weather parameters had linear correlations with the quality of sour cherry. Our results show that an increasing amount of precipitation was correlated with a decrease in total acid content of sour cherry, and that increasing temperature had a positive influence on total acid content. Big differences in day and night temperatures also had a positive effect on dry matter and sugar content of sour cherry while the amount of precipitation had a negative effect. High minimum temperatures were related to decreased sugar content. A more favourable climatic water balance had a positive effect on vitamin C content. Years with a large negative water balance generally have fruits with a low vitamin C content. Source

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