RT info:eu-repo/semantics/conferenceObject
T1 Effects of the application of forchlorfenuron (CPPU) on the composition of verdejo grapes
A1 Azuara, Marie
A1 Martín Peña, Pedro
A1 González García, María Rosa
A1 Mangas, Rafael
AB The application of cytokinins such as forchlorfenuron (CPPU) has been widely used in table grape varieties to increase yield and berry size. However, the potential interest of these phytoregulators in wine grapes have been scarcely analyzed. The objective of this study has been to evaluate the influence of CPPU treatment on the agronomic performance and composition of Verdejo grapes. The trial was conducted in 2021, in the Protected Designation of Origin “Rueda” (Spain). CPPU was applied using a concentration of 15 mg/L, by spraying the bunches when the berries were 5-6 mm in diameter. The photosynthesis rates and the stem water potential, measured after the application, tended to decrease in the treated plants without modify the values of vine yield and vigour. The treatment significantly affected the content of soluble solids and total polyphenols of the grape must, detecting increases of 15.4% and 7%, respectively, compared to the controls. Preliminary results suggest that the application of CPPU on the bunches could improve the quality of the Verdejo grapes. The treatment would be interesting to apply in cultivation conditions where the harvest has difficulties to reach an adequate level of maturity, such as excessive vigour or too cold climate.
SN 2117-4458
YR 2023
FD 2023
LK https://uvadoc.uva.es/handle/10324/59146
UL https://uvadoc.uva.es/handle/10324/59146
LA eng
NO BIO Web of Conferences 56, 01022 (2023)  43rd World Congress of Vine and Wine
NO Producción Científica
DS UVaDOC
RD 21-may-2024