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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
008 2012 bl uuuu u00u1 u #d
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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| 5. |  | QUADROS, R. M. B. de; BELLOTE, A. F. J.; SANTOS FILHO, A.; REISSMANN, C. B.; CAMARGO, E. C. Influencia do nitrogenio, potassio e carbono do solo no crescimento de Eucalyptus grandis. In: CONGRESSO BRASILEIRO DE CIÊNCIA DO SOLO, 25., 1995, VIÇOSA, MG. O Solo nos Grandes Domínios Morfoclimáticos do Brasil e o Desenvolvimento Sustentado: resumos expandidos. Viçosa, MG: Sociedade Brasileira do Solo: Universidade Federal de Viçosa, Departamento de Solos, 1995. v. 3, p. 1439-1442.| Biblioteca(s): Embrapa Florestas. |
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| 6. | | SANTOS FILHO, A. B. dos; VELOSO, C. A. C.; PARAY, M. M.; MARTINS JUNIOR, H. B.; BATISTA, E. M. Efeito de alguns adubos nitrogenados sobre o Ph do solo. In: ENCONTRO DE PÓS-GRADUAÇÃO DA FCAP, 1., 1995, Belém, PA. Resumos dos trabalhos. Belém, PA: FCAP, 1995.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Acre; Embrapa Amazônia Oriental. |
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| 7. | | SILVA, D. F. da; GARCIA, P. H. de M.; CAVALCANTE, J. T.; FERREIRA, P. V.; SAMPAIO, L. V. A.; CAMARA, T. M. M.; SILVA, M. T. da; SILVA NETO, J. V. da; NASCIMENTO, M. da S.; COSTA, L. M. da S.; SILVA, J. A. C.; SANTOS, D. F. dos; SANTOS FILHO, A. M. dos. Desempenho de Genótipos de milho e sorgo sob diferentes densidades de plantio para produção de forragem. In: CONGRESSO ACADÊMICO INTEGRADO DE INOVAÇÃO E TECNOLOGIA, 1., 2016, Alagoas. Anais... Alagoas: UFAL, 2016. Resumo.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Tabuleiros Costeiros. |
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| Registros recuperados : 7 | |
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