Crescimento de porta-enxertos e interação entre porta-enxertos e cultivares copas de videira (Vitis spp.) na região de Goiânia-GO
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2018-05-07
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Universidade Federal de Goiás
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In order to evaluate the growth of three cultivars of rootstocks, as well as for the cultivation of rootstocks and canopy, better adapted to the conditions of soil and climate of the Cerrado, are important for the growth of viticulture in Goiás state. Such as the influence of rootstocks on production, physical-chemical characteristics and maturation evolution in four table grape cultivars grown in Goiânia, GO. In the first experiment, to evaluate the growth of rootstocks, the experiment was performed in a randomized complete block design (3x7), with five replications, each replicate formed by one plant. The first factor consisted of three rootstocks: IAC-313 'Tropical', IAC-572 'Jales' and IAC-766 'Campinas'. The plants were evaluated from 45 days after drastic pruning, totaling seven evaluations (45, 60, 75, 90, 105, 120, 135 days after pruning), being the second factor. The diameter of the main branch was evaluated at grafting height (80 cm), and main branch length, in addition to the absolute growth rate. In the second experiment, a randomized complete block design was used, with five replications. The studied combinations were composed by the rootstocks IAC 766 'Campinas' x IAC 572 'Jales' under the cultivars BRS Vitória, BRS Núbia, BRS Isis and Niagara Rosada. Each cultivar was evaluated in isolation for the two rootstocks. The rootstock cultivar IAC-572 'Jales' shows greater vigor for branch growth. In length it was 69% and 47.3% higher, in diameter it was 49.8% and 18.8% higher than the IAC-313 'Tropical' and 'IAC-766' Campinas rootstocks, respectively. The rootstock cultivar IAC-766 'Campinas' although has low vigor in branch growth, presents a satisfactory development. The cultivar BRS Vitória presented higher productivity on the rootstock IAC 766 and greater development of the curls and berries on the IAC 572. This cultivar presented a cycle of 119 days and a thermal requirement of 1419 Degrees of Pruning until harvest. The BRS Nubia cultivar presented higher productivity on the IAC 572 rootstock. The thermal requirement for BRS Nubia to complete its cycle was 1725 Degrees-Day, with a productive cycle, from pruning to harvesting of 140 days. The cultivar BRS Isis on the rootstock IAC 572 presented higher values of yield, yield and number of bunches per plant. On the IAC 766 rootstock, BRIS Isis presented a thermal need of 1958 Degrees, with a cycle of 154 days. For IAC 572, it took 2079 Degrees-Day, 161 days after pruning. The evaluated rootstocks did not influence the productive and physical-chemical characteristics of Niagara rosé. The productive cycle of the pruning until the harvest was of 133 days and thermal necessity of 1622 Degrees-Day, for both rootstocks. The cultivars BRS Vitória, BRS Núbia, BRS Isis and Niágara rosada are recommended for cultivation in the region of Goiânia-GO.
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CAMPOS, L. F. C. Crescimento de porta-enxertos e interação entre porta-enxertos e cultivares copas de videira (Vitis spp.) na região de Goiânia-GO. 2018. 49 f. Tese (Doutorado em Agronomia) - Universidade Federal de Goiás, Goiânia, 2018.