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| Botton, Marcos; Embrapa Uva e Vinho; Colleta, Vanessa Dalla; Laboratorios Alac. |
| A pérola-da-terra Eurhizococcus brasiliensis (Hempel in Wile) (Hemiptera: Margarodidae) é uma das principais pragas da videira na Região Sul do Brasil. Neste trabalho, foi avaliada a resistência de cultivares de Vitis rotundifolia (Bountiful, Chief, Creek, Dixie, Magnolia, Magoon, Noble, Regale, Roanoke, Sumith e Topsail) à pérola-da-terra, comparando-as com o porta-enxerto 101-14 (Vitis riparia x Vitis rupestris). O experimento foi instalado em área naturalmente infestada pela praga, avaliando-se a resistência dos genótipos mediante a contagem do número de insetos presentes nas raízes, peso seco das plantas (parte aérea + raízes) e mortalidade após três anos. Todas as cultivares de V. rotundifolia apresentaram baixo índice de infestação pela... |
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Palavras-chave: 5.01.02.02-8 Muscadinia rotundifolia; Eurhizococcus brasiliensis; Cultivares de videira; Porta-enxertos; Vitis 5.01.02.02-8 Muscadinea rotundifolia; Eurhizococcus brasiliensis; Grape cultivars; Grape rootstocks; Vitis. |
| Ano: 2010 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/3151 |
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| ZHU,Yan-Yun; ZHAO,Peng-Tao; WANG,Xiao-Yu; ZHANG,Juan; WANG,Xue- Hui; TIAN,Cheng-Rui; REN,Meng-Meng; CHEN,Tong-Guo; YUAN,Huan-Huan. |
| Abstract The potential astringency of eight grape cultivars was evaluated based on polyphenol/protein binding. The parameters such as weights, sizes, total phenols, flavanols and tannins of different grape tissues were determined, and the polyphenol/protein binding was analyzed by SDS-PAGE and spectroscopy. The Cabernet Sauvignon had the highest skin proportion, while the Blue French had the highest seed proportion. The Blue French seeds had the highest total phenolic content, while the Cabernet Sauvignon skins had the highest total phenolic content. SDS-PAGE showed that the seed extracts had a better affinity than skin extracts for saliva proteins, but fluorescence spectra demonstrated that the interactions of skin polyphenols with protein were more... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Grape cultivars; Polyphenols; Interaction; Electrophoresis; Spectroscopy. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612019000400930 |
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| Leão,Patrícia Coelho de S.; Cruz,Cosme Damião; Motoike,Sérgio Y.. |
| The objectives of this study were to evaluate the performance of cultivars, to quantify the variability and to estimate the genetic distances of 66 wine grape accessions in the Grape Germplasm Bank of the EMBRAPA Semi-Arid, in Juazeiro, BA, Brazil, through the characterization of discrete and continuous phenotypic variables. Multivariate statistics, such as, principal components, Tocher's optimization procedure, and the graphic of the distance, were efficient in grouping more similar genotypes, according to their phenotypic characteristics. There was no agreement in the formation of groups between continuous and discrete morpho-agronomic traits, when Tocher's optimization procedure was used. Discrete variables allowed the separation of Vitis vinifera and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Germplasm; Grapevine; Grape cultivars; Vitis spp.; Multivariate analysis. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452010000400026 |
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