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| Angelotti,Francislene; Hamada,Emília; Magalhães,Edineide Elisa; Ghini,Raquel; Garrido,Lucas da Ressureição; Pedro Júnior,Mário José. |
| Abstract: The objective of this work was to evaluate the potential impact of climate change on the occurrence of grapevine downy mildew in Brazil. Seedlings containing four to six leaves were sprayed with a sporangia suspension containing 105 sporangia per milliliter. After spraying, the seedlings were subjected to temperatures of 26, 28, 29.1, 30.4, and 31.8°C for 24 hours. The percentage of diseased leaf area and the latent period were evaluated. Maps of the geographic and temporal distribution of the disease were made considering the monthly average of the mean air temperature and leaf wetness duration for the reference climate or climate normal (1961-1990) and the future climates (2011-2040, 2041-2070, and 2071-2100), considering the A2 and B1 gas... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Plasmopara viticola; Vitis; Air temperature; Geographical information system.. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2017000600426 |
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| Angelotti,Francislene; Scapin,Claudia Regina; Tessmann,Dauri José; Vida,João Batista; Vieira,Rafael Augusto; Souto,Eliezer Rodrigues de. |
| O objetivo deste trabalho foi avaliar a resistência à ferrugem causada pelo fungo Phakopsora euvitis, em genótipos de videira, e a eficiência da infecção de acordo com a idade das folhas e concentração de inóculo. A avaliação foi feita em 15 genótipos, com base nos seguintes componentes de resistência: número de pústulas (urédios) por cm²; tamanho das pústulas; número de esporos produzidos por pústula; e período latente. Os componentes de resistência, com exceção do período latente, apresentaram grande variação quantitativa. A análise multivariada desses componentes diferenciou cinco grupos de genótipos. Os genótipos mais resistentes foram as cultivares porta-enxertos IAC313, IAC572 e IAC766, em que a eficiência da infecção foi baixa, com pústulas menores... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phakopsora euvitis Vitis; Análise multivariada reação de hipersensibilidade resistência genética. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2008000900005 |
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| Teixeira,Antônio H. de C.; Tonietto,Jorge; Pereira,Giuliano E.; Angelotti,Francislene. |
| Dados climáticos médios foram usados em conjunto com modelos simples de regressão que relacionam o coeficiente de cultura (Kc), a evapotranspiração de referência (ET0) e os graus dias acumulados (GDac) para quantificar o requerimento hídrico de videiras (RHV) para mesa e para vinho no Nordeste brasileiro. O RHV juntamente com dados de precipitação permitiu o desenvolvimento de um índice hídrico para videiras (IHV), o qual foi aplicado com dados médios de temperatura do ar para os ciclos produtivos na caracterização de diferentes graus de aptidão sob irrigação, variando-se as datas de poda. Para produção de uvas de mesa constatou-se que não há limitação térmica na região, entretanto maiores teores de açúcar, bem como maior produção, podem ser obtidos nos... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Evapotranspiração; Coeficiente de cultura; Graus-dias; Índices bioclimáticos. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662012000400010 |
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| Santos,Roberta Machado; Voltolini,Tadeu Vinhas; Angelotti,Francislene; Aidar,Saulo de Tarso; Chaves,Agnaldo Rodrigues de Melo. |
| The objective of the present trial was to evaluate the productive and morphogenetic characteristics of buffel grass subjected to different air temperatures and CO2 concentrations. Three cultivars of buffel grass (Biloela, Aridus and West Australian) were compared. Cultivars were grown in growth chambers at three temperatures (day/night): 26/20, 29/23, and 32/26 °C, combined with two concentrations of CO2: 370 and 550 µmol mol-1. The experimental design was completely randomized, in a 3 × 3 × 2 factorial arrangement with three replications. There were interactions between buffel grass cultivars and air temperatures on leaf elongation rate (LER), leaf appearance rate (LAR), leaf lifespan (LL) and senescence rate (SR), whereas cultivars vs. carbon dioxide... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Carbon dioxide; Cenchrus ciliaris; Climate change. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982014000800404 |
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| Angelotti,Francislene; Buffara,Claudia Regina Scapin; Tessamnn,Dauri José; Vieira,Rafael Augusto; Vida,João Batista. |
| The protective, eradicative and curative activities of the fungicides azoxystrobin, tebuconazole, pyraclostrobin+metiram, and ciproconazole against grapevine rust, were determined in greenhouse. To evaluate the protective activity, leaves of potted ´Niagara´ (Vitis labrusca) vines were artificially inoculated with an urediniospore suspension of Phakopsora euvitis four, eight or forteen days after fungicidal spray; and to evaluate the curative and eradicative activities, leaves were sprayed with fungicides two, four or eight days after inoculation. Disease severity was assessed 14 days after each inoculation. All tested fungicides present excellent preventive activity against grapevine rust; however, tebuconazole and ciproconazole provide better curative... |
| Tipo: Info:eu-repo/semantics/report |
Palavras-chave: Chemical control; Phakopsora euvitis; Vitis sp. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782014000801367 |
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| Buffara,Cláudia Regina Scapin; Angelotti,Francislene; Vieira,Rafael Augusto; Bogo,Amauri; Tessmann,Dauri José; Bem,Betina Perreira de. |
| The downy mildew, caused by Plasmopora viticola, is one of the most important grapevine (Vitis vinifera) diseases in Southern Brazil, causing defoliation and economic losses. The evaluation of disease severity is an important decision for adoption of strategies and tactics for disease control. Therefore, the objective of this work was to elaborate and to validate a diagrammatic scale to assess downy mildew severity in grapevine, respecting the limitations of visual acuity. The diagrammatic scale with seven levels of disease severity of 1, 3, 6, 12, 25, 50 and 75% was developed in two versions of black-and-white and color scale. The scales were tested and validated by eight raters with and without previous experience with grapevine downy mildew. The raters... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Disease assessment; Pathometry; Plamospara viticola; Vitis vinifera. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782014000801384 |
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| Barros,Juliane Rafaele Alves; Guimarães,Miguel Julio Machado; Simões,Welson Lima; Melo,Natoniel Franklin de; Angelotti,Francislene. |
| ABSTRACT Water deficit and high temperatures are abiotic factors that most limit plant growth and development. However, its effects depend on crop development stage and on stress duration and intensity. Thus, the objective of was to evaluate the development of cowpea subjected to water restriction in different phenological stages and to increase in air temperature. The experiment was conducted with the cultivar ‘Carijó’, in growth chambers, in a 4 x 3 x 2 factorial arrangement, corresponding to levels of water availability (25, 50, 75, and 100%,), phenological stages (vegetative, flowering and pod filling) and temperature regimes (T°1: 20-26-33 °C e T°2: 24.8-30.8-37.8 °C), respectively. Reduction of water availability in the vegetative and flowering... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Abiotic stress; Oxidative stress; Phenology; Vigna unguiculata.. |
| Ano: 2021 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542021000100200 |
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