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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
07/07/2014 |
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Data da última atualização: |
25/05/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
OLIVEIRA, E. J. de; FERREIRA, C. F.; SANTOS, V. da S.; JESUS, O. N. de; OLIVEIRA, G. A. F. |
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Afiliação: |
EDER JORGE DE OLIVEIRA, CNPMF; CLAUDIA FORTES FERREIRA, CNPMF; VANDERLEI DA SILVA SANTOS, CNPMF; ONILDO NUNES DE JESUS, CNPMF; GILMARA ALVARENGA FACHARDO OLIVEIRA, UFRB. |
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Título: |
Potential of SNP markers for the characterization of Brazilian cassava germplasm. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Theoretical and Applied Geneticst, 2014 |
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ISSN: |
0040-5752 |
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DOI: |
10.1007/s00122-014-2309-8 |
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Idioma: |
Inglês |
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Conteúdo: |
The objective of the present work was to evaluate the diversity and genetic structure of the largest cassava germplasm bank in Brazil. Complementary methodological approaches such as discriminant analysis of principal components (DAPC), Bayesian analysis and molecular analysis of variance (AMOVA) were used to understand the structure and diversity of 1,280 accessions genotyped using 402 single nucleotide polymorphism markers. The genetic diversity (0.327) and the average observed heterozygosity (0.322) were high considering the bi-allelic markers. In terms of population, the presence of a complex genetic structure was observed indicating the formation of 30 clusters by DAPC and 34 clusters by Bayesian analysis. Both methodologies presented difficulties and controversies in terms of the allocation of some accessions to specific clusters. However, the clusters suggested by the DAPC analysis seemed to be more consistent for presenting higher probability of allocation of the accessions within the clusters. Prior information related to breeding patterns and geographic origins of the accessions were not sufficient for providing clear differentiation between the clusters according to the AMOVA analysis. In contrast, the FST was maximized when considering the clusters suggested by the Bayesian and DAPC analyses. The high frequency of germplasm exchange between producers and the subsequent alteration of the name of the same material may be one of the causes of the low association between genetic diversity and geographic origin. The results of this study may benefit cassava germplasm conservation programs, and contribute to the maximization of genetic gains in breeding programs. MenosThe objective of the present work was to evaluate the diversity and genetic structure of the largest cassava germplasm bank in Brazil. Complementary methodological approaches such as discriminant analysis of principal components (DAPC), Bayesian analysis and molecular analysis of variance (AMOVA) were used to understand the structure and diversity of 1,280 accessions genotyped using 402 single nucleotide polymorphism markers. The genetic diversity (0.327) and the average observed heterozygosity (0.322) were high considering the bi-allelic markers. In terms of population, the presence of a complex genetic structure was observed indicating the formation of 30 clusters by DAPC and 34 clusters by Bayesian analysis. Both methodologies presented difficulties and controversies in terms of the allocation of some accessions to specific clusters. However, the clusters suggested by the DAPC analysis seemed to be more consistent for presenting higher probability of allocation of the accessions within the clusters. Prior information related to breeding patterns and geographic origins of the accessions were not sufficient for providing clear differentiation between the clusters according to the AMOVA analysis. In contrast, the FST was maximized when considering the clusters suggested by the Bayesian and DAPC analyses. The high frequency of germplasm exchange between producers and the subsequent alteration of the name of the same material may be one of the causes of the low association bet... Mostrar Tudo |
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Thesagro: |
Banco de germoplasma; Mandioca. |
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Thesaurus Nal: |
Bayesian theory; Cassava. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02392naa a2200241 a 4500
001 1989884
005 2023-05-25
008 2014 bl uuuu u00u1 u #d
022 $a0040-5752
024 7 $a10.1007/s00122-014-2309-8$2DOI
100 1 $aOLIVEIRA, E. J. de
245 $aPotential of SNP markers for the characterization of Brazilian cassava germplasm.$h[electronic resource]
260 $c2014
520 $aThe objective of the present work was to evaluate the diversity and genetic structure of the largest cassava germplasm bank in Brazil. Complementary methodological approaches such as discriminant analysis of principal components (DAPC), Bayesian analysis and molecular analysis of variance (AMOVA) were used to understand the structure and diversity of 1,280 accessions genotyped using 402 single nucleotide polymorphism markers. The genetic diversity (0.327) and the average observed heterozygosity (0.322) were high considering the bi-allelic markers. In terms of population, the presence of a complex genetic structure was observed indicating the formation of 30 clusters by DAPC and 34 clusters by Bayesian analysis. Both methodologies presented difficulties and controversies in terms of the allocation of some accessions to specific clusters. However, the clusters suggested by the DAPC analysis seemed to be more consistent for presenting higher probability of allocation of the accessions within the clusters. Prior information related to breeding patterns and geographic origins of the accessions were not sufficient for providing clear differentiation between the clusters according to the AMOVA analysis. In contrast, the FST was maximized when considering the clusters suggested by the Bayesian and DAPC analyses. The high frequency of germplasm exchange between producers and the subsequent alteration of the name of the same material may be one of the causes of the low association between genetic diversity and geographic origin. The results of this study may benefit cassava germplasm conservation programs, and contribute to the maximization of genetic gains in breeding programs.
650 $aBayesian theory
650 $aCassava
650 $aBanco de germoplasma
650 $aMandioca
700 1 $aFERREIRA, C. F.
700 1 $aSANTOS, V. da S.
700 1 $aJESUS, O. N. de
700 1 $aOLIVEIRA, G. A. F.
773 $tTheoretical and Applied Geneticst, 2014
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Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
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| Registros recuperados : 161 | |
| 1. |  | CALHEIROS, D. F. Determinação de impactos e conservação dos recursos hídricos na bacia do Alto Paraguai. Corumbá: Embrapa Pantanal, 2007. 4 p. (Embrapa Pantanal. Artigo de Divulgação na Mídia, 124). Disponível também em: bonitonoticias, estadomsnews, folhadoms, capitaldopantanal, portabonito, opantaneiro, douradosnews, portaldoagronegocio, agorams, douradosinforma, cassilandianews, perfilnews, msnoticias, corumbaonline,...| Tipo: Artigo de Divulgação na Mídia |
| Biblioteca(s): Embrapa Pantanal. |
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| 7. | | CALHEIROS, D. F. Índice de qualidade de bacia: nova proposta para gestão da Bacia do rio Miranda. Corumbá, MS: Embrapa Pantanal, 2007. 3 p. (Embrapa Pantanal. Artigo de Divulgação na Mídia, 113). Disponível também em: internel, criareplantar, agrolink, douradosagora, boletimpecuario, opntaneiro, corumbaonline, douradosagora, perfilnews, riosvivos, portaldoagronegocio, capitaldopantanal, agrosoft, douradosinforma, portalbonito,...| Tipo: Artigo de Divulgação na Mídia | Circulação/Nível: -- - -- |
| Biblioteca(s): Embrapa Pantanal. |
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| 15. | | VIEIRA, L. M.; CALHEIROS, D. F. Contaminação por mercúrio e pesticidas. In: MARQUES, D. K. S.; MORAES, A. S. (Ed.). Pesca e piscicultura no Pantanal: o produtor pergunta, a Embrapa responde. Brasília, DF: Embrapa Informação Tecnológica; Corumbá: Embrapa Pantanal, 2010. (Coleção 500 perguntas, 500 respostas). p. 165-177.| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Pantanal. |
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| Registros recuperados : 161 | |
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