CARBOHYDRATE RESERVES IN SOME GRAPEVINE CULTIVARS FROM SCDVV BLAJ
DOI:
https://doi.org/10.1199/zy692455Keywords:
grapevine, soluble sugars, starch, total carbohydrates, reserveAbstract
Carbohydrate reserves are crucial for the growth cycle of grapevine because they provide the carbon source that supports the start of vegetation. There is scientific evidence that shows that the carbohydrate amount from the reserves stored over winter influences the new root and bud development, the shoot growth and the development of the inflorescences in the following season. The present study assesses the overwintering carbohydrate reserve status of several grapevine varieties cultivated at SCDVV Blaj. The studied cultivars were: Italian Riesling, Fetească regală, Fetească neagră, Fetească albă, Neuburger, Traminer roz and Sauvignon blanc, all located at Crăciunelu de jos grapevine plantation. The soluble sugars content, the starch content and the amount of total carbohydrates were determined using the classic anthrone reagent method. All of the samples were assessed as possessing a sufficient carbohydrate reserve for the first phenophases of this year’s (2023) vegetation period, most of them being classified as very well-matured, having a total carbohydrate content higher than 16 g % DW.References
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