Development of 'Itália Melhorada' grapes on different rootstocks and under the semiarid conditions of the Rio Grande do Norte State, Brazil

Semina: Ciências Agrárias

Ricardo Enrique Bressan-Smith¹  Django Jesus Dantas²  Celso Valdevino Pommer²  Aldrin Mario da Silva Benjamin²  Débora Jesus Dantas²  Glauber Henrique de Sousa Nunes²  Vander Mendonça² 

[1] Universidade Estadual do Norte Fluminense Darcy Ribeiro;Universidade Federal Rural do Semi-Árido;

关键词: Videira;    Uva;    Fenologia;    Índices biometeorológicos;    Vitis vinifera.;   

DOI  :  10.5433/1679-0359.2018v39n5p1867

来源: DOAJ

【 摘 要 】

Our study was carried out in the region of Mossoró city, state of Rio Grande do Norte (Brazil), in February 2013. This experiment aimed to describe the phenology, estimate biometeorological indexes, and perform a chemical characterization of 'Itália Melhorada' grapes (Vitis vinifera L) grafted on three different rootstocks (cultivars: IAC 313, IAC572, and IAC766), during two production cycles and under semiarid conditions. The first cycle lasted 115 days, with a pruning performed on 04/19/2013; yet the second lasted 111 days, with a pruning on 09/25/2013. In the first cycle, the thermal sum required was 1258.27 DD (degree days), while in the second, it was 1290.50 DD. The Heliothermic Geslin Index (HGI) observed in the first cycle was 352.84 and, in the second, it was 371.17. The rootstocks had no influence on the evaluated factors (phenology, TTA, TSS, and STT/ TTA) in either of the two cycles, therefore, all the tested rootstocks can be used indistinctly, but still, the analysis revealed differences from one cycle to another in terms of TSS and TSS / TTA of berries.

【 授权许可】

Unknown