SEASONAL CHANGES IN FRUCTOSE, GLUCOSE AND SUCROSE CONTENT OF HAZELNUT BARK TISSUES GROWN IN THE BLACK SEA REGION

Y. Okay, A.I. Köksal, N. Artik
The seasonal changes in total carbohydrates, fructose, glucose and sucrose in the bark tissues of ‘Tombul’, ‘Palaz’, ‘Kalınkara’, ‘Çakıldak’ and ‘Sivri’ cultivars. grown in the eastern and western Black Sea regions were determined by HPLC. As with other fruit species, fructose, glucose and sucrose levels decreased from the end of spring to summer, showed steady changes with the lowest values in summer and increased from mid-autumn until winter. Despite the general tendency for decline during the spring, the soluble sugar contents of Sivri increased in the Düzce region in April. Annual changes in fructose, glucose and sucrose in different regions and cultivars did not show significant differences. The differences between the regions and the cultivars were prominent in the autumn and winter months. The sucrose level was higher in December and January in Düzce, which has lower winter temperatures than Giresun. The opposite results were obtained for other sugar contents except for the glucose contents of ‘Kalınkara’ in December. Differences between regions during the winter period occurred mostly in the ‘Palaz’, ‘Çakıldak’ and ‘Sivri’ cultivars. In January the sucrose level was also higher in these cultivars than in the others.
Okay, Y., Köksal, A.I. and Artik, N. (2005). SEASONAL CHANGES IN FRUCTOSE, GLUCOSE AND SUCROSE CONTENT OF HAZELNUT BARK TISSUES GROWN IN THE BLACK SEA REGION. Acta Hortic. 686, 207-219
DOI: 10.17660/ActaHortic.2005.686.28
https://doi.org/10.17660/ActaHortic.2005.686.28
English

Acta Horticulturae