Giesco
IMPACT OF DELAYED HARVESTS (LH, DMR, PDMR 4.1.C) AND POSTHARVEST TECHNIQUES ON GRAPE BERRY COMPOSITION: A CRITICAL REVIEW IMPACTO DE LAS COSECHAS RETRASADAS (CR, DMR, PDMR4.1C) Y DE LAS TECNOLOGIAS POSTCOSECHA SOBRE LA COMPOSICION DE LA BAYA DE UVA: UNA REVISION CRITICA
BONGHI, Claudio1, 2*; CARGNELLO, Giovanni3 1 DAFNAE, University of Padova, Agripolis, 35020 Legnaro, Italy, 2CIRVE, Via XXVIII Aprile, 14-31015 Conegliano, TV 3 Conegliano Campus 5.1C (Treviso) *Corresponding author: C Bonghi, claudio.bonghi@unipd.it
Abstract: At harvest, the composition of the grape berries is the result of the interaction between physiological processes genetically programmed during the developmental cycle and responses to the imposed environmental parameters that induce more or less pronounced stress conditions. To produce some tipology of wine (e.g. dessert and reinforced wines) or recovery a correct balance between grape berry components, grape berries undergoing extended ripening (late harvest, LH; Double Maturation Reasoned, DMR; and Poli Double Maturation Reasoned 4.1 C, PDMR4.1C) and/or postharvest dehydration as well as treatments with elicitors (e.g. ethylene). For a correct application of these techniques is crucial to explore and understand: A) the effects of environmental parameters on ripening metabolism and the evolution of senescence in attached berries; B) the behaviour of detached berries under stress conditions and their responses to the different levels of dehydration; C) the responsiveness of grape berries to treatments with elicitors and their effect on its composition. Herein, taking into account novel information obtained by physiological and omics approaches, will be critically reviewed the knowledge on the aforementioned aspects and processes.
Keywords: Withering, Hormones, Polyphenols profile, Aromas, Vitis vinifera
Abstract: At harvest, the composition of the grape berries is the result of the interaction between physiological processes genetically programmed during the developmental cycle and responses to the imposed environmental parameters that induce more or less pronounced stress conditions. To produce some tipology of wine (e.g. dessert and reinforced wines) or recovery a correct balance between grape berry components, grape berries undergoing extended ripening (late harvest, LH; Double Maturation Reasoned, DMR; and Poli Double Maturation Reasoned 4.1 C, PDMR4.1C) and/or postharvest dehydration as well as treatments with elicitors (e.g. ethylene). For a correct application of these techniques is crucial to explore and understand: A) the effects of environmental parameters on ripening metabolism and the evolution of senescence in attached berries; B) the behaviour of detached berries under stress conditions and their responses to the different levels of dehydration; C) the responsiveness of grape berries to treatments with elicitors and their effect on its composition. Herein, taking into account novel information obtained by physiological and omics approaches, will be critically reviewed the knowledge on the aforementioned aspects and processes.
Keywords: Withering, Hormones, Polyphenols profile, Aromas, Vitis vinifera