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| Godoy,Cláudia Vieira; Seixas,Claudine Dinali Santos; Soares,Rafael Moreira; Marcelino-Guimarães,Franscismar Correa; Meyer,Maurício Conrado; Costamilan,Leila Maria. |
| Abstract: Asian soybean rust, caused by the fungus Phakopsora pachyrhizi, is the most severe disease of the crop and can cause yield losses of up to 90%. The disease was first reported in Brazil in 2001. Epidemics of the disease are common in the country, where the fungus can survive year-round. Regulatory measures to reduce the inoculum between seasons and avoid late-season soybean have been adopted to manage the disease. Disease control has relied mainly on chemical control, but a lower sensibility of the fungus to fungicides has been reported in Brazil. Major-resistance genes have been mapped and incorporated into the cultivars. With the reduced efficacy of the fungicides, the adoption of integrated measures to control the disease will be important for... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glycine max; Phakopsora pachyrhizi; Biotechnology; Chemical control; Genetic resistance; Losses; Management.. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2016000500407 |
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| Pinheiro,Victor dos Reis; Seixas,Claudine Dinali Santos; Godoy,Cláudia Vieira; Soares,Rafael Moreira; Oliveira,Maria Cristina Neves de; Almeida,Álvaro Manuel Rodrigues. |
| The objective of this work was to evaluate the effect of moisture and temperature on the development of Sclerotium rolfsii on soybean, corn, and wheat straw. Wheat straw produced the lowest number of sclerotia. Intermediate soil moisture level (70% of field capacity), and temperatures ranging between 25-30ºC favored sclerotia development. No sclerotia were formed at temperatures between 30-35ºC, on any type of straw. |
| Tipo: Info:eu-repo/semantics/report |
Palavras-chave: Glycine max; Crop rotation; No-tillage; Sclerotium blight. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2010000300014 |
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| Ribeiro,Aliny Simony; Toledo,José Francisco Ferraz de; Arias,Carlos Alberto Arrabal; Godoy,Cláudia Vieira; Soares,Rafael Moreira; Moreira,José Ubirajara Vieira; Pierozzi,Pedro Henrique Braga; Vidigal,Maria Celeste Gonçalves; Oliveira,Marcelo Fernandes de. |
| Soybean is one of the most important crops in Brazil and continuously generates demands for production technologies, such as cultivars resistant to diseases. In recent years, the Asian rust fungus (Phakopsora pachyrhizi Syd. & P. Syd 1914) has caused severe yield losses and the development of resistant cultivars is the best means of control. Understanding the genetic control and estimating parameters associated with soybean (Glycine max) resistance to P. pachyrhizi will provide essential information for cultivar selection. We investigated quantitative genetic control of P. pachyrhizi and estimated parameters associated to soybean yield in the absence and presence of this phytopathogen. Six cultivars and their 15 diallel derived F2 and F3... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Genetic components; Genetic potential; Yield prediction. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572008000100018 |
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| Godoy,Cláudia Vieira; Henning,Ademir Assis. |
| O objetivo deste trabalho foi avaliar a eficiência do tratamento de semente de soja com fluquinconazol e da aplicação foliar de fungicidas no manejo da ferrugem-da-soja, em três épocas de semeadura, na safra 2007/2008, em Londrina, PR. O delineamento foi o de blocos ao acaso, em arranjo fatorial 2x5, com dois tratamentos de semente com fluquinconazol e cinco aplicações de misturas de fungicidas na primeira época de semeadura. Na segunda e na terceira época o arranjo fatorial foi de 2x6. Avaliou-se a área abaixo da curva de progresso da doença, o índice vegetativo por diferença normalizada (NDVI) e a produtividade. Não se verificou interação significativa entre o tratamento de semente com fluquinconazol e os tratamentos de mistura de fungicidas aplicados na... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phakopsora pachyrhizi; Controle; Fluquinconazol. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2008001000006 |
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