Phenology, thermal requirements and maturation of the SR 0.501-17 white wine grape hybrid cultivated in contrasting climatic conditions

• Published in: Revista Ceres Vol. 67; no. 4; pp. 247 - 255
• Main Authors: Pedro Júnior, Mário José, Moura, Mara Fernandes, Hernandes, José Luiz
• Format: Journal Article
• Language: English
• Published: Vicosa Universidade Federal de Viçosa-UFV, Revista Ceres 01-08-2020; Universidade Federal de Viçosa; Universidade Federal De Viçosa
• Subjects: AGRICULTURE, MULTIDISCIPLINARY; Agritourism; Agronomy; Altitude; Annual rainfall; Berries; Climate; Climatic conditions; Cultivars; Cultivation; degree days; Fruit cultivation; Fruits; Grapes; Hybrids; Information management; Maturation; Municipalities; Phenology; Plant breeding; soluble solids; Sparkling wine; Sprinkler systems; Sugar; Temperature requirements; titratable acidity; Vines; Viticulture; Wines; Brazil; degree days; soluble solids; titratable acidity
• ISSN: 0034-737X; 2177-3491; 2177-3491
• DOI: 10.1590/0034-737x202067040001

INTRODUCTION Grape growers are increasing the demand for different grape cultivars aiming at elaborating high quality wine due to agrotourism expansion and the possibility of producing white grape wines has been emerging in the State of Sao Paulo to meet the consumer needs. In spite of the existence of different white grape hybrids for wine purposes, the demand for new hybrids promoted the evaluation and selection of genetic crosses, in the IAC grape-breeding program, which need agronomic characterization in different climatic conditions, as well as the evaluation of its winemaking performance. [...]the selection made at the IAC highlighted the hybrid 'SR 0.50117' for the winemaking purposes, due to cluster quality, vine rusticity and sugar accumulation characteristics. When a grape cultivar is introduced in a new growing region, the knowledge of phenology plays a major role in the success of the production system since the characterization of the phenological stages duration and thermal requirements of the vines in different climatic regions provide information for management (BertolettiBarros et al, 2015). Currently the northwest region of the state emerges as a pole of tropical viticulture, where altitudes range from 450 to 550 m, total annual rainfall of 1300 mm and the average temperature of 23 °C. These climatic differences between the east and northwest region may influence both phenology and maturation process of grape cultivars. [...]the objective of this study was to evaluate and compare the performance of SR 0.501-17 white grape hybrid in contrasting climatic conditions, represented by municipalities of the eastern and northwestern regions of the state of Sāo Paulo, aiming at characterizing the different phenological stages duration; thermal requirements and the influence of temperature and rain occurrence on must physicochemical characteristics.