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Registro Completo |
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
23/10/2012 |
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Data da última atualização: |
20/02/2015 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
OLIVEIRA, E. J. de; RESENDE, M. D. V. de; SANTOS, V. da S.; FERREIRA, C. F.; OLIVEIRA, G. A. F.; SILVA, M. S. da; OLIVEIRA, L. A. de; AGUILAR-VILDOSO, C. I. |
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Afiliação: |
EDER JORGE DE OLIVEIRA, CNPMF; MARCOS DEON VILELA DE RESENDE, CNPF; VANDERLEI DA SILVA SANTOS, CNPMF; CLAUDIA FORTES FERREIRA, CNPMF; GILMARA ALVARENGA FACHARDO OLIVEIRA, Universidade Federal do Recôncavo da Bahia; MAIANE SUZARTE DA SILVA, Universidade Federal do Recôncavo da Bahia; LUCIANA ALVES DE OLIVEIRA, CNPMF; CARLOS IVAN AGUILAR-VILDOSO, Bolsista CNPQ/CNPMF. |
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Título: |
Genome-wide selection in cassava. |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
Euphytica, v.187, p. 263-276, 2012. |
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Idioma: |
Inglês |
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Conteúdo: |
The main objective of this study was to estimate the selection accuracy and to predict the genetic gain in cassava breeding using genomic selection methodologies. We evaluated 358 cassava genotypes for the following traits: shoot weight (SW), fresh root yield (FRY), starch fraction amylose content (AC), dry matter content (DMC), and starch yield (S-Y). Genotyping was performed using 390 single nucleotide polymorphisms (SNPs), which were used as covariates in the random regression-best linear unbiased prediction model for genomic selection. The heritability values detected by markers for the SW, FRY, AC, DMC, and S-Y traits were 0.25, 0.25, 0.03, 0.20, and 0.26, respectively. Because the low heritability detected for AC, this trait was eliminated from further analysis. Using only the most informative SNPs (118, 92, 56, and 97 SNPs for SW, FRY, DMC, and S-Y, respectively) we observed higher selection accuracy which were 0.83, 0.76, 0.67, and 0.77, respectively to SW, FRY, DMC, and S-Y. With these levels of accuracy and considering a selection cycle reduced by half the time, the theoretical gains with genomic selection compared to phenotypic selection for DMC, FRY, and SW would be 39.42 %, 56.90 %, and 73.96 %, respectively. These results indicate that in the cassava, genomic selection can substantially speed up selection cycles, thereby increasing gains per unit time. Although there are high expectations for incorporating this strategy into breeding programs, we still need to validate the model for other traits and evaluate whether the selection accuracy can be improved using more SNPs. MenosThe main objective of this study was to estimate the selection accuracy and to predict the genetic gain in cassava breeding using genomic selection methodologies. We evaluated 358 cassava genotypes for the following traits: shoot weight (SW), fresh root yield (FRY), starch fraction amylose content (AC), dry matter content (DMC), and starch yield (S-Y). Genotyping was performed using 390 single nucleotide polymorphisms (SNPs), which were used as covariates in the random regression-best linear unbiased prediction model for genomic selection. The heritability values detected by markers for the SW, FRY, AC, DMC, and S-Y traits were 0.25, 0.25, 0.03, 0.20, and 0.26, respectively. Because the low heritability detected for AC, this trait was eliminated from further analysis. Using only the most informative SNPs (118, 92, 56, and 97 SNPs for SW, FRY, DMC, and S-Y, respectively) we observed higher selection accuracy which were 0.83, 0.76, 0.67, and 0.77, respectively to SW, FRY, DMC, and S-Y. With these levels of accuracy and considering a selection cycle reduced by half the time, the theoretical gains with genomic selection compared to phenotypic selection for DMC, FRY, and SW would be 39.42 %, 56.90 %, and 73.96 %, respectively. These results indicate that in the cassava, genomic selection can substantially speed up selection cycles, thereby increasing gains per unit time. Although there are high expectations for incorporating this strategy into breeding programs, we still need to ... Mostrar Tudo |
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Thesagro: |
Mandioca; Seleção Genética. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02235naa a2200229 a 4500
001 1937665
005 2015-02-20
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100 1 $aOLIVEIRA, E. J. de
245 $aGenome-wide selection in cassava.$h[electronic resource]
260 $c2012
520 $aThe main objective of this study was to estimate the selection accuracy and to predict the genetic gain in cassava breeding using genomic selection methodologies. We evaluated 358 cassava genotypes for the following traits: shoot weight (SW), fresh root yield (FRY), starch fraction amylose content (AC), dry matter content (DMC), and starch yield (S-Y). Genotyping was performed using 390 single nucleotide polymorphisms (SNPs), which were used as covariates in the random regression-best linear unbiased prediction model for genomic selection. The heritability values detected by markers for the SW, FRY, AC, DMC, and S-Y traits were 0.25, 0.25, 0.03, 0.20, and 0.26, respectively. Because the low heritability detected for AC, this trait was eliminated from further analysis. Using only the most informative SNPs (118, 92, 56, and 97 SNPs for SW, FRY, DMC, and S-Y, respectively) we observed higher selection accuracy which were 0.83, 0.76, 0.67, and 0.77, respectively to SW, FRY, DMC, and S-Y. With these levels of accuracy and considering a selection cycle reduced by half the time, the theoretical gains with genomic selection compared to phenotypic selection for DMC, FRY, and SW would be 39.42 %, 56.90 %, and 73.96 %, respectively. These results indicate that in the cassava, genomic selection can substantially speed up selection cycles, thereby increasing gains per unit time. Although there are high expectations for incorporating this strategy into breeding programs, we still need to validate the model for other traits and evaluate whether the selection accuracy can be improved using more SNPs.
650 $aMandioca
650 $aSeleção Genética
700 1 $aRESENDE, M. D. V. de
700 1 $aSANTOS, V. da S.
700 1 $aFERREIRA, C. F.
700 1 $aOLIVEIRA, G. A. F.
700 1 $aSILVA, M. S. da
700 1 $aOLIVEIRA, L. A. de
700 1 $aAGUILAR-VILDOSO, C. I.
773 $tEuphytica$gv.187, p. 263-276, 2012.
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| 101. |  | CORÁ, T. C. L.; SALIS, S. M. de; URBANETZ, C.; DOMINGOS BRANCO, O. Fenologia da Acrocomia aculeata (bocaiuva) na Região de Antônio Maria Coelho, Corumbá, MS - dados preliminares. In: EVENTO DE INICIAÇÃO CIENTÍFICA DO PANTANAL, 2.; 2014, Corumbá. Resumos...Corumbá: Embrapa Pantanal, 2014. (Embrapa Pantanal. Documentos, 126). p. 18| Tipo: Resumo em Anais de Congresso |
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| 106. | | SALIS, S. M.; SILVA, M. P.; MATTOS, P. P.; POTT, V. J.; POTT, A. Fitossociologia de matas deciduas e semideciduas proximas a cidade de Corumba, MS. In: CONGRESSO NACIONAL DE BOTANICA, 47, 1996, Nova Friburgo. Resumos... Rio de Janeiro: Universidade Federal do Rio de Janeiro / Sociedade Botanica do Brasil, 1996. p.211.| Biblioteca(s): Embrapa Pantanal. |
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| 110. | | CASTRO, W. J. P.; SALIS, S. M. de; BRANCO, O. D.; BENÍCIO, S. J. Fitossociologia de um campo cerrado no Pantanal da Nhecolândia, MS. In: ENCONTRO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA PANTANAL E UNIVERSIDADE FEDERAL DE MATO GROSSO DO SUL, 3., SEMANA DE BIOLOGIA, 8. 2009, Corumbá. Resumos...Corumbá: Embrapa Pantanal, 2009. (Embrapa Pantanal. Documentos, 101). p. 34| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Pantanal. |
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| 111. | | SALIS, S. M. de; LEHN, C. R.; CRISPIM, S. M. A.; ISHII, I. H. Fitossociologia de um cerrado no Pantanal da Nhecolândia, Corumbá, MS. In: SIMPÓSIO SOBRE RECURSOS NATURAIS E SOCIOECONÔMICOS DO PANTANAL, 6.; EVENTO DE INICIAÇÃO CIENTÍFICA DO PANTANAL, 1., 2013, Corumbá, MS. Desafios e soluções para o Pantanal: resumos. Corumbá: Embrapa Pantanal, 2013.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Pantanal. |
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| 113. | | PADILHA, D. R. C.; SALIS, S. M.; CRISPIM, S. M. A.; BRANCO, O. D. Fitossociologia das espécies lenhosas em campo cerrado no Pantanal de Poconé e Paiaguás. In: ENCONTRO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA PANTANAL, 1.; SEMANA DE BIOLOGIA, 7., 2007, Corumbá. Resumos...Corumbá: Embrapa Pantanal, 2007. (Embrapa Pantanal. Documentos, 89). 1 p.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Pantanal. |
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| 114. | | SALIS, S. M.; CRISPIM, S. M. A.; ASSIS, M. A.; MATTOS, P. P. de. Fitossociologia e fitomassa de um cerradão no Pantanal, Mato Grosso do Sul, Brasil. In: CONGRESSO NACIONAL DE BOTÂNICA, 56., 2005, Curitiba. Resumos. [S.l.]: Sociedade Botânica do Brasil, 2005. 1 CD-ROM.| Tipo: Resumo em Anais de Congresso | Circulação/Nível: -- - -- |
| Biblioteca(s): Embrapa Florestas. |
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| Registros recuperados : 250 | |
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