Phenology and thermal requirements of grapevine cultivars in Dois Vizinhos, Paraná State, Brazil

ABSTRACT: This study aimed to characterize the phenology and thermal requirements of grapevine cultivars Bordô, BRS Carmem, BRS Lorena, BRS Magna, BRS Rubea, BRS Violeta, Concord, Concord Clone 30, Isabel, Isabel Precoce, Moscato Bailey, Moscato Embrapa, Niagara Branca, Niagara Rosada, and Seibel 5455 grafted on Paulsen 1103. The study was conducted in the fruit growing sector of the Federal Technological University of Paraná, Câmpus Dois Vizinhos, Paraná State, Brazil, during the cycles of 2015/2016 and 2016/2017. The experimental design was completely randomized, with four replicates and two evaluated plants per plot. Plants were grown in a vertical trellis system and spur pruned with two buds. Evaluations of phenology and thermal requirements were carried out from pruning to harvest. Cultivars Moscato Bailey and Seibel 5455 had high thermal requirements and longer cycles, while cultivars BRS Magna, BRS Violeta, and Isabel Precoce had lower thermal requirements and shorter cycles. The cycle and the thermal requirements of cultivars ranged from 98 to 132 days, and from 1065 to 1548 degree-days, respectively.

摘要：本研究旨在明确嫁接至Paulsen 1103砧木的Bordô、BRS Carmem、BRS Lorena、BRS Magna、BRS Rubea、BRS Violeta、康科德（Concord）、康科德无性系30（Concord Clone 30）、伊莎贝拉（Isabel）、早熟伊莎贝拉（Isabel Precoce）、贝利麝香（Moscato Bailey）、Embrapa麝香（Moscato Embrapa）、白尼亚加拉（Niagara Branca）、红尼亚加拉（Niagara Rosada）以及西贝尔5455（Seibel 5455）共14个葡萄品种的物候特性与需热量特征。本试验于巴西巴拉那州巴拉那联邦理工大学多斯维辛努斯校区（Câmpus Dois Vizinhos）的果树种植区内开展，试验周期覆盖2015/2016与2016/2017两个生长季。试验采用完全随机设计，设置4次重复，每个小区配置2株供试植株。供试植株采用直立篱架栽培，并实施双芽短梢修剪。物候特性与需热量的观测时段为从修剪至采收阶段。结果表明，贝利麝香（Moscato Bailey）与西贝尔5455（Seibel 5455）需热量较高，生育周期更长；而BRS Magna、BRS Violeta与早熟伊莎贝拉（Isabel Precoce）需热量较低，生育周期更短。供试品种的生育周期与需热量分别介于98~132天与1065~1548度日（degree-days）之间。