Late Blight
Mostrando 1-12 de 42 artigos, teses e dissertações.
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1. Heritability of resistance to potato late blight in an F1 population of elite potato cultivars
ABSTRACT Phytophthora infestans is the most important disease in potato crops. Its control is based on the use of chemical products that have developed pathogen resistance and high economic and environmental impacts. To reduce these effects, the use of plant varieties or cultivars resistant to this pathogen has been proposed. The aim of this study was to eva
Revista Ceres. Publicado em: 2022
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2. Potato genotypes reaction to early blight and late blight in organic cultivation
RESUMO: O manejo de doenças nos cultivos convencionais de batata requer emprego de maior quantidade de produtos fitossanitários e de maior toxicidade em relação ao cultivo orgânico, que pode acarretar riscos a saúde humana e impacto ambiental. Este trabalho teve como objetivo avaliar o rendimento e a reação de genótipos de batata à requeima e à p
Cienc. Rural. Publicado em: 14/03/2019
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3. IPR 102 - Dwarf Arabica coffee cultivar with resistance to bacterial halo blight
Abstract ‘IPR 102’ is a coffee cultivar derivative from a cross between “Catuaí” and “Icatu”. ‘IPR 102’ is a dwarf cultivar (medium size) with high rusticity, late ripening cycle, and it is resistant to bacterial halo blight and partial resistant to coffee leaf rust.
Crop Breed. Appl. Biotechnol.. Publicado em: 2017-12
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4. Artificial neural network for prediction of the area under the disease progress curve of tomato late blight
ABSTRACT: Artificial neural networks (ANN) are computational models inspired by the neural systems of living beings capable of learning from examples and using them to solve problems such as non-linear prediction, and pattern recognition, in addition to several other applications. In this study, ANN were used to predict the value of the area under the diseas
Sci. agric. (Piracicaba, Braz.). Publicado em: 2017-02
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5. Resistance to Phytophthora infestans in Solanum tuberosum landraces in Southern Chile
The objective of this work was to evaluate the resistance of 30 Chilean potato landraces to natural infection by Phytophthora infestans during two growing seasons in Southern Chile. Control cultivars were 'Désirée', which has moderate susceptibility to late blight, and 'Karú', which is characterized by moderate resistance to the disease. The response of t
Trop. plant pathol.. Publicado em: 2014-08
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6. Field resistance of potato cultivars to foliar early blight and its relationship with foliage maturity and tuber skin types
Three field experiments were carried out to assess the level of resistance of several cultivars to early blight (EB) and to examine the association between host resistance and either foliage maturity or tuber skin types. A total of 26 cultivars were used in Exps. 1 and 2, and 24 in Exp. 3. Plants were inoculated with isolates of Alternaria grandis at 31 days
Trop. plant pathol.. Publicado em: 2014-08
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7. Vegetative and productive aspects of organically grown coffee cultivars under shaded and unshaded systems
Although Coffea arabica species has its origin in the African understories, there is great resistance on the part of the Brazilian producers for growing this species under agroforestry systems as they fear that shading reduces production. This study aimed at evaluating some vegetative traits and the productivity of organically grown coffee (Coffea arabica L.
Scientia Agricola. Publicado em: 2011-08
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8. Evaluation of contact fungicide spray regimes for control of late blight (Phytophthora infestans) in southern Ethiopia using potato cultivars with different levels of host resistance
Late blight is an important disease of potato in Ethiopia, causing up to 100% loss in susceptible cultivars. In this study, two putatively resistant cultivars of relatively recent introduction (Jalenie and Gudenie) and a widely grown susceptible cultivar (White Flower) were evaluated for late blight severity and yield under five different contact fungicide (
Tropical Plant Pathology. Publicado em: 2011-02
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9. Ação de fungicidas e indutores de resistência no controle da requeima e pinta preta na cultura da batata / Fungicides and resistance inductors action in the control of late and early blight in potato crops
Late blight, caused by the oomycete Phytophthora infestans and early blight, caused by the fungus Alternaria solani, are among the most destructive diseases of potato crops in Brazil and worldwide. Considering the importance of the chemical control on integrated systems and the need for detailed knowledge of the performance of resistance inducers and fungici
Publicado em: 2011
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10. Estrutura genética, agressividade e sensibilidade a fungicidas de populações de Phytophthora infestans das regiões sul e sudeste do Brasil / Genetic structure, aggressiveness and fungicide sensitivity of Phytophthora infestans populations from the south and southeast regions of Brazil
The knowledge about the genetic structure, aggressiveness and sensitivity to fungicides of the current population of Phytophthora infestans can be useful to delineate strategies for the management of potato and tomato late blight. A total of 166 isolates were collected from six states of Brazil, in three periods: 1998/2000, 2003/2005 and 2008/2010. The isola
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 12/11/2010
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11. Relación entre la precipitación registrada en estados reproductivos de la soja y la severidad de Septoria glycines y Cercospora kikuchii
From 2003 to 2008, late season disease severity (LSDsev) values (Brown spot and Cercospora leaf blight) were recorded at the R7 growth stage at several sites in Santa Fe and Córdoba Provinces. The annual LSDsev records (N=15) were grouped into two epidemic categories based on a threshold value (median of observed disease data): severe (LSDsev >36 %) and mod
Tropical Plant Pathology. Publicado em: 2010-04
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12. PREVISÃO DA OCORRÊNCIA DE REQUEIMA E ALTERNARIA EM TOMATEIRO INDUSTRIAL IRRIGADO SOB DUAS CONDIÇÕES CLIMÁTICAS E SEU CUSTO / FORECAST OF LATE BLIGHT AND EARLY BLIGHT ON PROCESSING TOMATO UNDER TWO CLIMATE CONDITIONS AND ITS COST
A cultura do tomate (Lycopersicon esculentum Mill) é uma das mais expressivas culturas no cenário agrícola mundial, constituindo importante produto para o comércio in natura e indústria de extratos. O volume de fungicidas utilizado na cultura do tomateiro no controle das principais doenças é elevado e contribui significativamente nos custos de produç
Publicado em: 2010