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Biblioteca(s): |
Embrapa Amazônia Oriental. |
Data corrente: |
05/07/2012 |
Data da última atualização: |
29/11/2013 |
Tipo da produção científica: |
Artigo em Anais de Congresso |
Autoria: |
REIS, I. N. R. de S.; CARDOSO, J. de N. O.; LAMEIRA, O. A.; CORDEIRO, I. M. C. C.; MAIA, P. S. P. |
Afiliação: |
Iulla Naiff Rabelo de Souza Reis, BOLSISTA CAPES; Joseane de Nazaré Oliveira Cardoso, GRADUANDA UFRA; OSMAR ALVES LAMEIRA, CPATU; Iracema Maria Castro Coimbra Cordeiro, UFRA; Patrícia Surama Parise Maia, MESTRANDA UFRA. |
Título: |
Calogênese em embriões zigóticos de Schizolobium parahyba var. amazonicum (Huber ex Ducke) Barneby. |
Ano de publicação: |
2007 |
Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DE MELHORAMENTO DE PLANTAS, 4., 2007, São Lourenço. Melhoramento de plantas e agronegócio: anais. Lavras: UFLA: SBMP, 2007. |
Descrição Física: |
1 CD-ROM. |
Idioma: |
Português |
Thesagro: |
Embrião; Paricá. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/61784/1/trabalho154.pdf
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Marc: |
LEADER 00657nam a2200181 a 4500 001 1927796 005 2013-11-29 008 2007 bl uuuu u00u1 u #d 100 1 $aREIS, I. N. R. de S. 245 $aCalogênese em embriões zigóticos de Schizolobium parahyba var. amazonicum (Huber ex Ducke) Barneby. 260 $aIn: CONGRESSO BRASILEIRO DE MELHORAMENTO DE PLANTAS, 4., 2007, São Lourenço. Melhoramento de plantas e agronegócio: anais. Lavras: UFLA: SBMP$c2007 300 $c1 CD-ROM. 650 $aEmbrião 650 $aParicá 700 1 $aCARDOSO, J. de N. O. 700 1 $aLAMEIRA, O. A. 700 1 $aCORDEIRO, I. M. C. C. 700 1 $aMAIA, P. S. P.
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Embrapa Amazônia Oriental (CPATU) |
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![](/consulta/web/img/deny.png) | Acesso ao texto completo restrito à biblioteca da Embrapa Soja. Para informações adicionais entre em contato com valeria.cardoso@embrapa.br. |
Registro Completo
Biblioteca(s): |
Embrapa Soja. |
Data corrente: |
29/10/2008 |
Data da última atualização: |
30/10/2008 |
Tipo da produção científica: |
Resumo em Anais de Congresso |
Autoria: |
CIAMPI, M. B.; MEYER, M. C.; COSTA, M. J. N.; ZALA, M.; McDONALD, B. A.; CERESINI, P. C. |
Afiliação: |
Maisa Boff Ciampi, UNESP Jaboticabal; Mauricio Conrado Meyer, CNPSo; Mauro J. N. Costa Fundação Rio Verde Lucas do Rio Verde MT; Marcelo Zala, ETH Zurich-Swiss; Bruce A. McDonald Federal Institute of Technology Plant Pathology Institute of Integrative Biology (IBZ); Paulo C. Ceresini UNESP Ilha Solteira SP. |
Título: |
Genetic structure of populations of Rhizoctonia solani AG 1-IA from soybean in Brazil. |
Ano de publicação: |
2008 |
Fonte/Imprenta: |
In: INTERNATIONAL SYMPOSIUM ON RHIZOCTONIA, 4., 2008, Berlin. Abstracts... Berlin: Bayer Crop Science, 2008. |
Páginas: |
p. 49. |
Idioma: |
Inglês |
Conteúdo: |
The Basidiomycete fungus Rhizoctonia solani anastomosis group (AG)-1 IA is a major pathogen of soybean in Brazil, where the average yield losses have reached 30 to 60% in some states in Northern Brazil. No information is currently available concerning levels of genetic diversity and population structure for this pathogen in Brazil. A total of 232 isolates of R. solani AG1 IA were collected from five soybean fields in the most important soybean production areas in central-western, northern, and northeastern Brazil. These isolates were genotyped using 10 microsatellite loci. Most of the multilocus genotypes (MLGTs) were site-specific, with few MLGTs shared among populations. Significant population subdivision was evident. High levels of admixture were observed for populations from Mato Grosso and Tocantins. After removing admixed genotypes, three out of five field populations (Maranhao, Mato Grosso, and Tocantins), were in Hardy-Weinberg (HW) equilibrium, consistent with sexual recombination. HW and gametic disequilibrium were found for the remaining soybean-infecting populations. The findings of low genotypic diversity, departures from HW equilibrium, gametic disequilibrium, and high degree of population subdivision in these R. solani AG-1 IA populations from Brazil are consistent with predominantly asexual reproduction, short-distance dispersal of vegetative propagules (mycelium or sclerotia), and limited long-distance dispersal, possibly via contaminated seed. None of the soybean-infecting populations showed a reduction in population size (bottleneck effect). We detected asymmetric historical migration among the soybean-infecting populations, which could explain the observed levels of subdivision. MenosThe Basidiomycete fungus Rhizoctonia solani anastomosis group (AG)-1 IA is a major pathogen of soybean in Brazil, where the average yield losses have reached 30 to 60% in some states in Northern Brazil. No information is currently available concerning levels of genetic diversity and population structure for this pathogen in Brazil. A total of 232 isolates of R. solani AG1 IA were collected from five soybean fields in the most important soybean production areas in central-western, northern, and northeastern Brazil. These isolates were genotyped using 10 microsatellite loci. Most of the multilocus genotypes (MLGTs) were site-specific, with few MLGTs shared among populations. Significant population subdivision was evident. High levels of admixture were observed for populations from Mato Grosso and Tocantins. After removing admixed genotypes, three out of five field populations (Maranhao, Mato Grosso, and Tocantins), were in Hardy-Weinberg (HW) equilibrium, consistent with sexual recombination. HW and gametic disequilibrium were found for the remaining soybean-infecting populations. The findings of low genotypic diversity, departures from HW equilibrium, gametic disequilibrium, and high degree of population subdivision in these R. solani AG-1 IA populations from Brazil are consistent with predominantly asexual reproduction, short-distance dispersal of vegetative propagules (mycelium or sclerotia), and limited long-distance dispersal, possibly via contaminated seed. None of the s... Mostrar Tudo |
Thesagro: |
Doença de Planta; Fungo; Soja. |
Categoria do assunto: |
-- |
Marc: |
LEADER 02395naa a2200229 a 4500 001 1462920 005 2008-10-30 008 2008 bl uuuu u00u1 u #d 100 1 $aCIAMPI, M. B. 245 $aGenetic structure of populations of Rhizoctonia solani AG 1-IA from soybean in Brazil. 260 $c2008 300 $ap. 49. 520 $aThe Basidiomycete fungus Rhizoctonia solani anastomosis group (AG)-1 IA is a major pathogen of soybean in Brazil, where the average yield losses have reached 30 to 60% in some states in Northern Brazil. No information is currently available concerning levels of genetic diversity and population structure for this pathogen in Brazil. A total of 232 isolates of R. solani AG1 IA were collected from five soybean fields in the most important soybean production areas in central-western, northern, and northeastern Brazil. These isolates were genotyped using 10 microsatellite loci. Most of the multilocus genotypes (MLGTs) were site-specific, with few MLGTs shared among populations. Significant population subdivision was evident. High levels of admixture were observed for populations from Mato Grosso and Tocantins. After removing admixed genotypes, three out of five field populations (Maranhao, Mato Grosso, and Tocantins), were in Hardy-Weinberg (HW) equilibrium, consistent with sexual recombination. HW and gametic disequilibrium were found for the remaining soybean-infecting populations. The findings of low genotypic diversity, departures from HW equilibrium, gametic disequilibrium, and high degree of population subdivision in these R. solani AG-1 IA populations from Brazil are consistent with predominantly asexual reproduction, short-distance dispersal of vegetative propagules (mycelium or sclerotia), and limited long-distance dispersal, possibly via contaminated seed. None of the soybean-infecting populations showed a reduction in population size (bottleneck effect). We detected asymmetric historical migration among the soybean-infecting populations, which could explain the observed levels of subdivision. 650 $aDoença de Planta 650 $aFungo 650 $aSoja 700 1 $aMEYER, M. C. 700 1 $aCOSTA, M. J. N. 700 1 $aZALA, M. 700 1 $aMcDONALD, B. A. 700 1 $aCERESINI, P. C. 773 $tIn: INTERNATIONAL SYMPOSIUM ON RHIZOCTONIA, 4., 2008, Berlin. Abstracts... Berlin: Bayer Crop Science, 2008.
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