Berry Shrivel - an unsolved physiological problem in grapevine
Abstract
The project “Berry Shrivel – an unsolved physiological disorder in grapevine” analyses the early changes during BS induction. The ripening disorder is of highly economic importance for winegrowers and especially in Austria the main red wine cultivar Zweigelt can show high incidence of BS in vineyards. The onset of BS induction starts at or short after Veraison, the start of grape berry ripening, and is leading to grapes of low quality with low sugar contents, high acidity, reduced anthocyanin content and strong off flavors. The processes and causes leading to BS induction and symptom development are still unclear. In the presented project we are following the hypothesis that BS is due to a reduced transport of assimilates towards grape berries. According to the current knowledge we are focusing on anatomical changes within the vascular system and we will establish an in vitro system to manipulate the carbohydrate support of single berries with the aim to artificially induce BS. Thereby different microscopic and molecular biological methods will be applied. Our approach is the first effort to analyze these early events during BS induction and will provide essential knowledge towards the unraveling of this complex ripening disorder affecting grape berries.
keywords Berry Shrivel grapvine fruit ripening
Publikationen
Project staff
Michaela Griesser
Assoc. Prof. Priv.-Doz. Dipl.-Ing. Dr.nat.techn. Michaela Griesser
michaela.griesser@boku.ac.at
Tel: +43 1 47654-95814
Project Leader
01.07.2016 - 30.09.2017