Rust Plant Disease
Mostrando 13-24 de 47 artigos, teses e dissertações.
-
13. Aspectos epidemiológicos da ferrugem alaranjada da cana-de-açúcar / Epidemiological aspects of orange rust of sugarcane
A ferrugem alaranjada da cana-de-açúcar (Puccinia kuehnii) foi relatada pela primeira vez no Brasil em dezembro de 2009. Em países onde a doença já ocorre, danos de até 40% foram relatados. Diante da presente situação, os objetivos deste estudo foram: (i) verificar a germinação de esporos sob diferentes temperaturas, in vitro, (ii) verificar aspect
Publicado em: 2011
-
14. Histopatologia das reações de resistência de hospedeiro e de não-hospedeiro em interações Puccinia triticina x Poaceae / Histopathology of resistance reactions on host and nonhost interactions in Puccinia triticina X poaceae
Leaf rust, caused by the fungus Puccinia triticina, is one of the major diseases of wheat. The environmental conditions present in the Southern Cone of South America, associated with a high genetic variability for virulence of the pathogen, favoring the occurrence of annual epidemics. Thus, it is common the overcome of resistance in varieties with specific r
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2011
-
15. Mapeamento de locos de resistência quantitativa a Puccinia psidii Winter em uma progênie de irmãos completos de eucalipto / Mapping of quantitative resistance loci against Puccinia psidii Winter in a full-sib progeny of Eucalyptus
In Brazil, the eucalyptus rust, caused by Puccinia psidii Winter, stands out as the most important disease of eucalypts, mainly in southeastern Brazil. The use of resistant genotypes is the main control method, which makes the understanding of the genetic basis of resistance essential to the selection of resistant genotypes. In this study, an F1 progeny of 9
Publicado em: 2010
-
16. Characterization and selection of soybean experimental lines for rust resistance or tolerance / Caracterização e seleção de linhagens de soja resistentes ou tolerantes à ferrugem asiática
This research aimed to characterize and select soybean genotypes, considering their reaction to Asian soybean rust (FAS) and grain yield (PG). This work was developed in the Sector of Applied Genetics to Self-Pollinated Crops, Department of Genetics, Faculty of Agriculture Luiz de Queiroz, University of São Paulo located in Piracicaba city, State of São Pa
Publicado em: 2009
-
17. Asian Rust control and performance of two soybean cultivars submitted to different fungicides and application time / Controle de ferrugem asiática e desempenho de duas cultivares de soja submetidas a diferentes fungicidas e épocas de aplicações
Phakopsora pachyrhizi Syd. &Syd. is the worst threat for soybean crop in the main producers regions around the world, where significant loses has been observed. Many variables in the quantification of damage of this disease have to be studied, such as area under the disease progress curve (AUDPC), healthy leaf area absorption (HAA), healthy leaf area duratio
Publicado em: 2009
-
18. Essential oils for control of âColletotrichum truncatumâ and Asian soybean rust. / ÃLEOS ESSENCIAIS PARA O CONTROLE DE âColletotrichum truncatumâ E FERRUGEM ASIÃTICA EM SOJA
The objective of the work was to evaluate the antifungal activity of essential oils via treatment of soy seeds in the control of the fungus Colletotrichum truncatum and on the Asian soy rust. For that, the essential oils of Hyptis marrubioides, Aloysia gratissima and Cordia verbenacea were tested. In the first experiment, the oils were initially tested in vi
Publicado em: 2009
-
19. Genetic parameters and agronomic potential of adapted x exotic soybean crosses, with emphasis on the reaction to Asian soybean rust / Parâmetros genéticos e potencial agronômico de cruzamentos tipo adaptado x exótico em soja, com ênfase na reação à ferrugem asiática
Neste trabalho teve-se por objetivo estimar parâmetros genéticos e avaliar o potencial agronômico em gerações F2 e F3:2 de cruzamentos do tipo adaptado x exótico em soja, quanto ao potencial de gerar descendentes agronomicamente superiores e com resistência à ferrugem asiática. Ademais, procurou-se estudar a resistência a doenças de final de ciclo
Publicado em: 2009
-
20. Identificação de novos locos de resistência à ferrugem asiática (Phakopsora pachyrhizi) em soja (Glycine max)
In Brazil, the soybean rust, caused by Phakopsora pachyrhizi, has caused yield losses and increased the cost of production by the intensive use of fungicides in soybean fields. The use of resistant varieties is an important tool to control the disease. Currently five different loci have been reported containing genes for resistance to disease, called rpp1 to
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 12/12/2008
-
21. Potencial de Ãleos essenciais no manejo da ferrugem e da cercosporiose do cafeeiro / Potential of the essential oils in the control of leaf rust and brown spot eye of coffee plant
The rust and brown spot eye are considered the main diseases of coffee plant, it reduces the production and undermine the drink quality. The management of the disease is conventionally done by application of copper and systemic fungicides, however, they may promote the contamination of man, environment and select resistant pathogens races. Thus, the essentia
Publicado em: 2008
-
22. PROGRESSO DA FERRUGEM E DA CERCOSPORIOSE NA CULTURA DO CAFEEIRO IRRIGADO EM VÃRIAS DENSIDADES DE PLANTIO / Progress of rust and cercosporosis in irrigated cultivation of coffee in various densities of planting
The current coffee has been adopted new technologies to conduct and to manage crop, such as irrigation, fertigation and high plant densities in order to increase productivity and consequently, the profit. The aim of this study was to evaluate the effect of different irrigation methods applied in four plant densities by a drip system, its relation with the in
Publicado em: 2008
-
23. Genetic potential of population Ouro Negro x BRS Valente bean families / Potencial genético de famílias de feijoeiro da população Ouro Negro x BRS Valente
This work shows the analysis of 192 segregating families derived from the crossing of Ouro Negro and BRS Valente cultivars. The purpose is to develop black beans lines that are resistant to antracnose (Colletotrichum lindemuthianum) and rust (Uromyces appendiculatus), and also to have desirable agronomic traits such as high productivity of grain, erect archi
Publicado em: 2008
-
24. Plant extracts and commercial products for the management of coffee rust and mechanisms of coffee defense against Cercospora leaf spot. / Extratos vegetais e produtos comerciais no manejo da ferrugem e nos mecanismos de defesa do cafeeiro à cercosporiose
The aim of this study was to evaluate the effect of plant extracts and commercial products against rust in a conventional farming system. Furthermore, to assess the defense mechanisms of coffee seedlings against Cercospora leaf spot. The rust experiment was conducted in a coffee field (Cultivar Rubi) with 10 year old at the campus of Federal University of La
Publicado em: 2008