Banca de DEFESA: MARIANA ALVES PINTO BARBOSA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : MARIANA ALVES PINTO BARBOSA
DATA : 19/08/2020
HORA: 09:30
LOCAL: Universidade Federal de São João del-Rei - Campus Sete Lagoas
TÍTULO:

Phenology and production of Vitis labrusca vines in the central region of Minas Gerais

PALAVRAS-CHAVES:

Vitis labrusca L., gas exchange, physiology, post-harvest.

PÁGINAS: 79
GRANDE ÁREA: Ciências Agrárias
ÁREA: Agronomia
SUBÁREA: Fitotecnia
ESPECIALIDADE: Produção de Mudas
RESUMO:

Grape production can be influenced by physiological, environmental factors and even by the varietal and rootstock used. In view of this, two experiments were carried out. Experiment 1 aimed to evaluate the influence of rootstocks IAC-572, IAC-766 and Paulsen-1103 on phenology and cv production. Bordô Experiment 2 aimed to evaluate the quality of the fruits and the phenological behavior in winter production of the cultivars Bordô,Isabel Precoce and Niágara Rosada in the central region of Minas Gerais. For experiment 1, there was a physiological characterization performed in a randomized block design (DBC), with three treatments and three repetitions. The treatments were constituted by cv. Wine red on rootstocks IAC-572 Jales, IAC-766 Campinas and Paulsen-1103. Experiment 2, on the other hand, consisted of a DBC in a 3x6 factorial scheme, composed of three cultivars (Bordô, Isabel premature, Niágara Rosada) and six phenological phases (separate flowers, flowering, “pea size” berry, compact bunch, beginning of maturation (painter ) and full maturation (harvest)), with three replications and four plants per experimental unit. The rate of liquid photosynthesis, stomatal conductance, transpiration and vapor pressure deficits were evaluated. For both experiments, a descriptive analysis of duration in days and sum of degree-days of the main phenological subperiods, production per plant and productivity were performed. Physical-chemical characterization was also carried out in a completely randomized design (DIC), containing ten repetitions and five grape clusters per repetition. The physical characteristics evaluated were: fresh fruit mass, bunch length, number of berries per bunch, berry mass, stalk mass, stalk length, longitudinal diameter of the berry and transverse diameter of the berry, shape of the berry, color of the house of the berry, color of the pulp, the mass of the residue, mass of the pulp, yield of the residue and the pulp. Forthe chemical characteristics, the hydrogen potential (pH), the total soluble solids content, total titratable acidity (AT), ratio, moisture content and anthocyanin content were evaluated. Phenological behavior and phenological sub-phases were different inall rootstocks. The phases from compact cluster to painter (CC / PN) and painter to maturation (PN / MT) were the ones that demanded the number of days and the highest thermal sum. The IAC-766 rootstock showed higher averages of leaf area, production and productivity. The physiological behavior was influenced by the rootstocks, in liquid photosynthesis there was an interaction between the rootstock and the studied phenological phase. The IAC-766 rootstock also showed higher fruit mass, berry mass, pulp mass, bunch length, stem length, and hue color of the skin and pulp, and the anthocyanin content. The phenological cycle of American vine cultivars Bordô and Isabel premature are similar and shorter than pink Niagara. The cultivars show different physiological behavior depending on the phenological phases, but only the Isabel precocious cultivar is able to produce winter harvest grapes in the central region of Minas Gerais. The Bordô cultivar has a high anthocyanin content in the skin and pulp.

MEMBROS DA BANCA:
Presidente - 1545714 - JOSE CARLOS MORAES RUFINI
Interno - 1756428 - LANAMAR DE ALMEIDA CARLOS
Externo à Instituição - PAULO MARCIO NORBERTO - EPAMIG