| |
|
|
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Arroz e Feijão; Embrapa Roraima. |
|
Data corrente: |
05/05/2021 |
|
Data da última atualização: |
18/06/2021 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Autoria: |
GUIMARÃES, P. H. R.; MELO, P. G. S.; CORDEIRO, A. C. C.; TORGA, P. P.; RANGEL, P. H. N.; CASTRO, A. P. de. |
|
Afiliação: |
ANTONIO CARLOS CENTENO CORDEIRO, CPAF-RR; PAULA PEREIRA TORGA, CNPAF; PAULO HIDEO NAKANO RANGEL, CNPAF; ADRIANO PEREIRA DE CASTRO, CNPAF. |
|
Título: |
Index selection can improve the selection efficiency in a rice recurrent selection population. |
|
Ano de publicação: |
2021 |
|
Fonte/Imprenta: |
Euphytica, v. 217, n. 95, 2021. |
|
Idioma: |
Inglês |
|
Conteúdo: |
To attain success with selection process, the breeders need to understand the genetic variability into each population developed by breeding program. In this purpose, breeders need to estimate the variance components and genetic and phenotypic parameters. Besides, they need to have the ability to select simultaneously genetically top progenies for multiple traits. This study used a field trial, with a panel of 198 S0:2 lowland rice progenies, evaluated in three environments during two years in order to: (i) estimate genetic parameters for different traits in a rice breeding population, (ii) evaluate the impact of direct selection and selection performed through three selection indices in a rice population developed by recurrent selection, and (iii) compare three selection indices using different economic weights with direct and indirect selection. Significant genetic variation was found among progenies for: grain yield, plant height, days to flowering, panicle blast, leaf scald and grain discoloration. The direct selection provided high gains for single trait selection, but this method may results in undesirable changes in related traits. Thus, between the evaluated indices and in comparison, to indirect selection the Mulamba and Mock index provided simultaneously greater gains for all the evaluated traits. Furthermore, we found that when the random weights and b-variation index were used as economic weight, it was found lower gains or no gains, showing that the gains attained with Smith and Hazel and Tai indices were linked to economic weights used. MenosTo attain success with selection process, the breeders need to understand the genetic variability into each population developed by breeding program. In this purpose, breeders need to estimate the variance components and genetic and phenotypic parameters. Besides, they need to have the ability to select simultaneously genetically top progenies for multiple traits. This study used a field trial, with a panel of 198 S0:2 lowland rice progenies, evaluated in three environments during two years in order to: (i) estimate genetic parameters for different traits in a rice breeding population, (ii) evaluate the impact of direct selection and selection performed through three selection indices in a rice population developed by recurrent selection, and (iii) compare three selection indices using different economic weights with direct and indirect selection. Significant genetic variation was found among progenies for: grain yield, plant height, days to flowering, panicle blast, leaf scald and grain discoloration. The direct selection provided high gains for single trait selection, but this method may results in undesirable changes in related traits. Thus, between the evaluated indices and in comparison, to indirect selection the Mulamba and Mock index provided simultaneously greater gains for all the evaluated traits. Furthermore, we found that when the random weights and b-variation index were used as economic weight, it was found lower gains or no gains, showing that the gains attain... Mostrar Tudo |
|
Palavras-Chave: |
Predicted gains. |
|
Thesagro: |
Arroz; Melhoramento Genético Vegetal; Oryza Sativa; Seleção Recorrente; Variação Genética. |
|
Thesaurus Nal: |
Genetic improvement; Quantitative genetics; Recurrent selection; Rice. |
|
Categoria do assunto: |
--
G Melhoramento Genético |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/223046/1/RamosGuimaraes2021-Article-IndexSelectionCanImproveTheSel1.pdf
|
|
Marc: |
LEADER 02451naa a2200301 a 4500
001 2131679
005 2021-06-18
008 2021 bl uuuu u00u1 u #d
100 1 $aGUIMARÃES, P. H. R.
245 $aIndex selection can improve the selection efficiency in a rice recurrent selection population.$h[electronic resource]
260 $c2021
520 $aTo attain success with selection process, the breeders need to understand the genetic variability into each population developed by breeding program. In this purpose, breeders need to estimate the variance components and genetic and phenotypic parameters. Besides, they need to have the ability to select simultaneously genetically top progenies for multiple traits. This study used a field trial, with a panel of 198 S0:2 lowland rice progenies, evaluated in three environments during two years in order to: (i) estimate genetic parameters for different traits in a rice breeding population, (ii) evaluate the impact of direct selection and selection performed through three selection indices in a rice population developed by recurrent selection, and (iii) compare three selection indices using different economic weights with direct and indirect selection. Significant genetic variation was found among progenies for: grain yield, plant height, days to flowering, panicle blast, leaf scald and grain discoloration. The direct selection provided high gains for single trait selection, but this method may results in undesirable changes in related traits. Thus, between the evaluated indices and in comparison, to indirect selection the Mulamba and Mock index provided simultaneously greater gains for all the evaluated traits. Furthermore, we found that when the random weights and b-variation index were used as economic weight, it was found lower gains or no gains, showing that the gains attained with Smith and Hazel and Tai indices were linked to economic weights used.
650 $aGenetic improvement
650 $aQuantitative genetics
650 $aRecurrent selection
650 $aRice
650 $aArroz
650 $aMelhoramento Genético Vegetal
650 $aOryza Sativa
650 $aSeleção Recorrente
650 $aVariação Genética
653 $aPredicted gains
700 1 $aMELO, P. G. S.
700 1 $aCORDEIRO, A. C. C.
700 1 $aTORGA, P. P.
700 1 $aRANGEL, P. H. N.
700 1 $aCASTRO, A. P. de
773 $tEuphytica$gv. 217, n. 95, 2021.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Roraima (CPAF-RR) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
Registro Completo
|
Biblioteca(s): |
Embrapa Milho e Sorgo. |
|
Data corrente: |
05/12/2008 |
|
Data da última atualização: |
24/05/2018 |
|
Tipo da produção científica: |
Artigo em Anais de Congresso / Nota Técnica |
|
Autoria: |
ABREU, A. de F. B.; DEL PELOS, M. J.; RAMALHO, M. A. P.; CARNEIRO, J. E. de S.; PAULA JUNIOR, T. J. de; PEREIRA, H. S.; MELO, L. C.; FARIA, L. C. de; COSTA, J. G. C. da; MARTINS, M.; PEREIRA FILHO, I. A.; SANTOS, J. B. dos; FARIA, J. C. de; BARROS, E. G. de; MOREIRA, M. A. |
|
Afiliação: |
Ângela de Fátima Barbosa Abreu, CNPAF; Maria José Del Peloso, CNPAF; Magno Antonio Patto Ramalho, Universidade Federal de Lavras; José Eustáquio de Souza Carneiro, Universidade Federal de Viçosa MG; Trazilbo José de Paula Júnior, Epamig; Helton Santos Pereira, CNPAF; Leonardo Cunha Melo, CNPAF; Luis Cláudio de Faria, CNPAF; Joaquim Geraldo Cáprio da Costa, CNPAF; Maurício Martins, Universidade Federal de Uberlândia; ISRAEL ALEXANDRE PEREIRA FILHO, CNPMS; João Bosco dos Santos, Universidade Federal de Lavras; Josias Corrêa de Faria, CNPAF; Everaldo Gonçalves de Barros, Universidade Federal de Viçosa MG; Maurílio Alves Moreira, Universidade Federal de Viçosa MG. |
|
Título: |
BRS 7762 Supremo: cultivar de feijão comum de grão preto e porte ereto para o Estado de Minas Gerais. |
|
Ano de publicação: |
2008 |
|
Fonte/Imprenta: |
In: CONGRESSO NACIONAL DE PESQUISA DE FEIJÃO, 9., 2008, Campinas. Ciência e tecnologia na cadeia produtiva do feijão. Campinas: Instituto Agronômico, 2008. p. 588-590. |
|
Idioma: |
Português |
|
Thesagro: |
Feijão; Variedade. |
|
Thesaurus NAL: |
Varieties. |
|
Categoria do assunto: |
G Melhoramento Genético |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/55887/1/brs-7762.pdf
|
|
Marc: |
LEADER 01035nam a2200301 a 4500
001 1491628
005 2018-05-24
008 2008 bl uuuu u00u1 u #d
100 1 $aABREU, A. de F. B.
245 $aBRS 7762 Supremo$bcultivar de feijão comum de grão preto e porte ereto para o Estado de Minas Gerais.$h[electronic resource]
260 $aIn: CONGRESSO NACIONAL DE PESQUISA DE FEIJÃO, 9., 2008, Campinas. Ciência e tecnologia na cadeia produtiva do feijão. Campinas: Instituto Agronômico, 2008. p. 588-590.$c2008
650 $aVarieties
650 $aFeijão
650 $aVariedade
700 1 $aDEL PELOS, M. J.
700 1 $aRAMALHO, M. A. P.
700 1 $aCARNEIRO, J. E. de S.
700 1 $aPAULA JUNIOR, T. J. de
700 1 $aPEREIRA, H. S.
700 1 $aMELO, L. C.
700 1 $aFARIA, L. C. de
700 1 $aCOSTA, J. G. C. da
700 1 $aMARTINS, M.
700 1 $aPEREIRA FILHO, I. A.
700 1 $aSANTOS, J. B. dos
700 1 $aFARIA, J. C. de
700 1 $aBARROS, E. G. de
700 1 $aMOREIRA, M. A.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Milho e Sorgo (CNPMS) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Expressão de busca inválida. Verifique!!! |
|
|
