Chemical characteristics of grapes cv. Syrah (Vitis vinifera L.) grown in the tropical semiarid region of Brazil (Pernambuco state): influence of rootstock and harvest season.

BACKGROUND: Obtaining two or more successive annual vintages from the same vineyard is characteristic of regions with a tropical climate, such as the Submédio of the São Francisco Valley, Brazil. The present study aimed to characterize the chemical composition of grapes in four production cycles (i.e. two calendar years) when considering the interaction between cv. Syrah and two rootstocks. For a broad characterization, two methodologies for the extraction of phenolic compounds were used, as well as different methods of analysis. RESULTS: The results obtained showed that there was an influence of rootstock and harvest season. Grapes from vines grafted onto IAC 313 contained higher concentrations of total condensed tannins (skins) and flavanols than grapes from vines grafted onto 1103P.However, the grape samples fromthe vines grafted onto 1103P contained higher levels of monomeric anthocyanins than the grape samples fromthe vines grafted onto IAC 313. The first harvest seasonwas characterized by higher concentrationsof most phenolic compounds than the second harvest season. CONCLUSION: In the present study, it was possible to confirm that, in the semiarid region of Brazil, the interaction between the cultivar Syrah and the different rootstocks, as well as the climatic conditions in each harvest season, influenced the composition of the grapes, mainly in relation to phenolic compounds. © 2019 Society of Chemical Industry

Bibliographic Details

Main Authors:	OLIVEIRA, J. B. de, EGIPTO, R., LAUREANO, O., DE CASTRO, R., PEREIRA, G. E., RICARDO-DA-SILVA, J. M.
Other Authors:	Juliane Barreto de Oliveira, Correspondence to: JB de Oliveira, Linking Landscape, Environment, Agriculture and Food, Instituto Superior de Agronomia, Universidade de Lisboa, Tapada da Ajuda, 1349-017 Lisbon, Portugal. E-mail: juliane.barreto@hotmail.com; Ricardo Egipto, LEAF- Linking Landscape, Environment, Agriculture and Food. Instituto Superior de Agronomia, Universidade de Lisboa, Lisbon, Portugal; Olga Laureano, LEAF- Linking Landscape, Environment, Agriculture and Food. Instituto Superior de Agronomia, Universidade de Lisboa, Lisbon, Portugal; Rogério de Castro, LEAF- Linking Landscape, Environment, Agriculture and Food. Instituto Superior de Agronomia, Universidade de Lisboa, Lisbon, Portugal; GIULIANO ELIAS PEREIRA, CNPUV; Jorge Manuel Ricardo-da-Silva, LEAF- Linking Landscape, Environment, Agriculture and Food. Instituto Superior de Agronomia, Universidade de Lisboa, Lisbon, Portugal.
Format:	Artigo de periódico biblioteca
Language:	English eng
Published:	2020-01-09
Subjects:	Harvest seasons, Red grapes, Tropical semiarid viticulture, Phenolic compounds, Rootstocks,
Online Access:	http://www.alice.cnptia.embrapa.br/alice/handle/doc/1118415
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