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Registro Completo |
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
06/04/2004 |
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Data da última atualização: |
29/10/2010 |
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Autoria: |
ARIAS, C. A. A.; RIBEIRO, A. A.; YORINORI, J. T.; BROGIN, R. L.; OLIVEIRA, M. F. de; TOLEDO, J. F. F. de. |
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Título: |
Inheritance of resistance of soybean to rust (Phakopsora pachyrhizi Sydow). |
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Ano de publicação: |
2004 |
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Fonte/Imprenta: |
In: WORLD SOYBEAN RESEARCH CONFERENCE, 7.; INTERNATIONAL SOYBEAN PROCESSING AND UTILIZATION CONFERENCE, 4.; CONGRESSO BRASILEIRO DE SOJA, 3., 2004, Foz do Iguassu. Abstracts of contributed papers and posters. Londrina: Embrapa Soybean, 2004. |
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Páginas: |
p. 100. |
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Série: |
(Embrapa Soja. Documentos, 228). |
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Idioma: |
Inglês |
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Notas: |
Editado por Flávio Moscardi, Clara Beatriz Hoffmann-Campo, Odilon Ferreira Saraiva, Paulo Roberto Galerani, Francisco Carlos Krzyzanowski, Mercedes Concordia Carrão-Panizzi. |
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Conteúdo: |
Soybean rust was recently detected in Brazil and represent a high hazard to the sustainability of Brazilian crops. Under favorable environmental conditions, the disease can attack the leaves causing premature defoliation and severe yield losses. All the soybean resistance sources, including plant introductions (PI) with the four previously described resistance genes (Rpp1 to Rpp4), a series of other PIs and a group of varieties carrying a single gene derived from soybean variety FT-2, were resistant to the first isolate observed in Brazil. The fungus P. packyrhizi is capable of developing new races and infecting resistant cultivars. In the crop season 2002/03, a new isolate broke the resistance conferred by the genes Rpp1 and Rpp3, gene derived from FT-2, and also genes from other PIs. Nowadays, there is no commercial variety resistant to this new isolate of the fungus and chemical control will be extensively used to prevent losses in the following plantings. Studies on the remaining resistance sources will help breeding programs to define their strategies with this disease. Crosses between the resistant genotypes PI200487, PI471904 and GC-001138-29 with susceptible varieties FT-2 or BRS 134 were used to study the inheritance of resistance to the new isolate. Five plants of each parental and 100 F2 plants from each cross were planted in the greenhouse at Embrapa Soybean, Londrina, PR, arranged in a Completely Randomized Design. Plants were submitted to rust spores since their emergency by placing highly infected plants next to the pots. Humidity on leaves was ensured by spraying water six times along the night. Three assessments were made on the single leaf and on the first and second trifolium, respectively, classifying plants according the reaction: RB = "reddish brown" resistance reaction; RT = predominant RB reaction with presence of some TAN lesions; TR = predominant TAN reaction and presence of RB lesions; and TAN = only susceptible TAN lesions. The relative proportions of resistant and susceptible plants in the F2 generation agree with a segregation pattern of a single dominant gene determining the resistance reaction for the three genotypes. Complementary studies are being performed to know if these genes are the same of those described as Rpp2 and Rpp4, which persist resistant to the new isolate. MenosSoybean rust was recently detected in Brazil and represent a high hazard to the sustainability of Brazilian crops. Under favorable environmental conditions, the disease can attack the leaves causing premature defoliation and severe yield losses. All the soybean resistance sources, including plant introductions (PI) with the four previously described resistance genes (Rpp1 to Rpp4), a series of other PIs and a group of varieties carrying a single gene derived from soybean variety FT-2, were resistant to the first isolate observed in Brazil. The fungus P. packyrhizi is capable of developing new races and infecting resistant cultivars. In the crop season 2002/03, a new isolate broke the resistance conferred by the genes Rpp1 and Rpp3, gene derived from FT-2, and also genes from other PIs. Nowadays, there is no commercial variety resistant to this new isolate of the fungus and chemical control will be extensively used to prevent losses in the following plantings. Studies on the remaining resistance sources will help breeding programs to define their strategies with this disease. Crosses between the resistant genotypes PI200487, PI471904 and GC-001138-29 with susceptible varieties FT-2 or BRS 134 were used to study the inheritance of resistance to the new isolate. Five plants of each parental and 100 F2 plants from each cross were planted in the greenhouse at Embrapa Soybean, Londrina, PR, arranged in a Completely Randomized Design. Plants were submitted to rust spores since thei... Mostrar Tudo |
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Palavras-Chave: |
Ferrugem asiática da soja. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 03360naa a2200229 a 4500
001 1466769
005 2010-10-29
008 2004 bl uuuu u00u1 u #d
100 1 $aARIAS, C. A. A.
245 $aInheritance of resistance of soybean to rust (Phakopsora pachyrhizi Sydow).
260 $c2004
300 $ap. 100.
490 $a(Embrapa Soja. Documentos, 228).
500 $aEditado por Flávio Moscardi, Clara Beatriz Hoffmann-Campo, Odilon Ferreira Saraiva, Paulo Roberto Galerani, Francisco Carlos Krzyzanowski, Mercedes Concordia Carrão-Panizzi.
520 $aSoybean rust was recently detected in Brazil and represent a high hazard to the sustainability of Brazilian crops. Under favorable environmental conditions, the disease can attack the leaves causing premature defoliation and severe yield losses. All the soybean resistance sources, including plant introductions (PI) with the four previously described resistance genes (Rpp1 to Rpp4), a series of other PIs and a group of varieties carrying a single gene derived from soybean variety FT-2, were resistant to the first isolate observed in Brazil. The fungus P. packyrhizi is capable of developing new races and infecting resistant cultivars. In the crop season 2002/03, a new isolate broke the resistance conferred by the genes Rpp1 and Rpp3, gene derived from FT-2, and also genes from other PIs. Nowadays, there is no commercial variety resistant to this new isolate of the fungus and chemical control will be extensively used to prevent losses in the following plantings. Studies on the remaining resistance sources will help breeding programs to define their strategies with this disease. Crosses between the resistant genotypes PI200487, PI471904 and GC-001138-29 with susceptible varieties FT-2 or BRS 134 were used to study the inheritance of resistance to the new isolate. Five plants of each parental and 100 F2 plants from each cross were planted in the greenhouse at Embrapa Soybean, Londrina, PR, arranged in a Completely Randomized Design. Plants were submitted to rust spores since their emergency by placing highly infected plants next to the pots. Humidity on leaves was ensured by spraying water six times along the night. Three assessments were made on the single leaf and on the first and second trifolium, respectively, classifying plants according the reaction: RB = "reddish brown" resistance reaction; RT = predominant RB reaction with presence of some TAN lesions; TR = predominant TAN reaction and presence of RB lesions; and TAN = only susceptible TAN lesions. The relative proportions of resistant and susceptible plants in the F2 generation agree with a segregation pattern of a single dominant gene determining the resistance reaction for the three genotypes. Complementary studies are being performed to know if these genes are the same of those described as Rpp2 and Rpp4, which persist resistant to the new isolate.
653 $aFerrugem asiática da soja
700 1 $aRIBEIRO, A. A.
700 1 $aYORINORI, J. T.
700 1 $aBROGIN, R. L.
700 1 $aOLIVEIRA, M. F. de
700 1 $aTOLEDO, J. F. F. de
773 $tIn: WORLD SOYBEAN RESEARCH CONFERENCE, 7.; INTERNATIONAL SOYBEAN PROCESSING AND UTILIZATION CONFERENCE, 4.; CONGRESSO BRASILEIRO DE SOJA, 3., 2004, Foz do Iguassu. Abstracts of contributed papers and posters. Londrina: Embrapa Soybean, 2004.
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Registro original: |
Embrapa Soja (CNPSO) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Agroenergia. Para informações adicionais entre em contato com cnpae.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Agroenergia. |
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Data corrente: |
06/07/2017 |
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Data da última atualização: |
13/09/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
ALVES, G. C. S.; BARBOSA, V. H. S.; GIBAND, M.; BARROSO, P. A. V.; RODRIGUES, F.; ROCHA, M. R. da. |
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Afiliação: |
GLEINA COSTA SILVA ALVES; VICTOR HUGO SILVA BARBOSA; MARC GIBAND; PAULO AUGUSTO VIANNA BARROSO, CNPAE; FABRÍCIO RODRIGUES; MARA RÚBIA DA ROCHA. |
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Título: |
Inheritance of resistance to Meloidogyne incognita race 3 in cotton accession TX 25. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Acta Scientiarum, v. 39, p. 331-337, 2017. |
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DOI: |
10.4025/actasciagron.v39i3.32563 |
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Idioma: |
Inglês |
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Conteúdo: |
Os cotonicultores do mundo inteiro sofrem com as perdas causadas pela presença de fitonematoides nas lavouras. Assim o objetivo deste trabalho foi estudar a herança da resistência do acesso TX 25 de Gossypium hirsutum raça punctatum a Meloidogyne incognita raça 3. Foram utilizados acessos de Gossypium sp. pertencentes ao Banco de Germoplasma da Embrapa Algodão. Foram realizados dois experimentos em dois anos consecutivos. No primeiro ano foram testados FiberMax 966 e TX 25 como parentais suscetível e resistente, respectivamente, e as gerações F1, F2 e retrocruzamento. No segundo experimento foram testados os parentais FiberMax 966 e TX 25, a geração F2 além dos genótipos M315 (resistente) LA887 e DeltaOpal (moderadamente resistentes). Em ambos experimentos as plantas foram inoculadas com 2000 ovos e J2 de M. incognita raça 3. As avaliações ocorreram aos 120 dias após a inoculação, e avaliou-se índice de galhas, índice de massa de ovos e fator de reprodução. No primeiro experimento as plantas da geração F1 e do retrocruzamento se mostraram suscetíveis, As plantas da geração F2 nos dois experimentos apresentaram uma proporção de três plantas resistentes para uma suscetível indicando resistência de caráter oligogênico. |
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Palavras-Chave: |
Nematoide de galhas; Segregação gênica. |
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Thesagro: |
Gossypium Hirsutum. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01964naa a2200229 a 4500
001 2072151
005 2017-09-13
008 2017 bl uuuu u00u1 u #d
024 7 $a10.4025/actasciagron.v39i3.32563$2DOI
100 1 $aALVES, G. C. S.
245 $aInheritance of resistance to Meloidogyne incognita race 3 in cotton accession TX 25.$h[electronic resource]
260 $c2017
520 $aOs cotonicultores do mundo inteiro sofrem com as perdas causadas pela presença de fitonematoides nas lavouras. Assim o objetivo deste trabalho foi estudar a herança da resistência do acesso TX 25 de Gossypium hirsutum raça punctatum a Meloidogyne incognita raça 3. Foram utilizados acessos de Gossypium sp. pertencentes ao Banco de Germoplasma da Embrapa Algodão. Foram realizados dois experimentos em dois anos consecutivos. No primeiro ano foram testados FiberMax 966 e TX 25 como parentais suscetível e resistente, respectivamente, e as gerações F1, F2 e retrocruzamento. No segundo experimento foram testados os parentais FiberMax 966 e TX 25, a geração F2 além dos genótipos M315 (resistente) LA887 e DeltaOpal (moderadamente resistentes). Em ambos experimentos as plantas foram inoculadas com 2000 ovos e J2 de M. incognita raça 3. As avaliações ocorreram aos 120 dias após a inoculação, e avaliou-se índice de galhas, índice de massa de ovos e fator de reprodução. No primeiro experimento as plantas da geração F1 e do retrocruzamento se mostraram suscetíveis, As plantas da geração F2 nos dois experimentos apresentaram uma proporção de três plantas resistentes para uma suscetível indicando resistência de caráter oligogênico.
650 $aGossypium Hirsutum
653 $aNematoide de galhas
653 $aSegregação gênica
700 1 $aBARBOSA, V. H. S.
700 1 $aGIBAND, M.
700 1 $aBARROSO, P. A. V.
700 1 $aRODRIGUES, F.
700 1 $aROCHA, M. R. da
773 $tActa Scientiarum$gv. 39, p. 331-337, 2017.
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