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Registro Completo |
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Biblioteca(s): |
Embrapa Gado de Corte. |
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Data corrente: |
27/02/2019 |
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Data da última atualização: |
27/02/2019 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MATIAS, F. I.; BARRIOS, S. C. L.; BEARARI, L. M.; MEIRELES, K. G. X.; MATEUS, R. G.; AMARAL, P. N. C. do; ALVES, G. F.; VALLE, C. B. do; FRITSCHE-NETO, R. |
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Afiliação: |
FILIPE INÁCIO MATIAS, Universidade de São PAULO - USP/Escola Superior de Agricultura Luiz de Queiroz - ESALQ/Departamento de Genética; SANZIO CARVALHO LIMA BARRIOS, CNPGC; LUCAS MARTINS BEARARI, Universidade Estadual de Mato Grosso do Sul - UEMS; KAREM GUIMARAES XAVIER MEIRELES, CNPGC; ROGÉRIO GONÇALVES MATEUS, Universidade Estadual de Mato Grosso do Sul - UEMS; PEDRO NELSON CESAR DO AMARAL, Universidade Estadual de Mato Grosso do Sul - UEMS; GEOVANI FERREIRA ALVES, Universidade Federal de Mato Grosso do Sul - UFMS; CACILDA BORGES DO VALLE, CNPGC; ROBERTO FRITSCHE-NETO, Universidade de São PAULO - USP/Escola Superior de Agricultura Luiz de Queiroz - ESALQ/Departamento de Genética. |
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Título: |
Contribution of Additive and Dominance Effects on Agronomical and Nutritional Traits, and Multivariate Selection on Urochloa spp. Hybrids. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Crop Science, v. 58, n. 6, p. 2444-2458, November/December, 2018. |
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Idioma: |
Inglês |
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Conteúdo: |
A tropical forage breeding program contains several peculiarities, especially when it involves polyploid species and facultative apomixis. Urochloa spp. are excellent perennial forages, and the identification of superior genotypes depends on the selection of many characteristics under complex genetic control, with high cost and time-consuming evaluation. Therefore, the use of tools such as multivariate analysis and diallel analyses could contribute to improving the efficiency of breeding programs. Thus, the objectives were to estimate (i) the contribution of additive and nonadditive effects on agronomical and nutritional traits in a population of interspecific hybrids of Urochloa spp., originated from a partial diallel between five apomictic and four sexual parents, and (ii) the accuracy of multivariate index selection efficiency. Genetic variability was detected between the parents, crosses, and hybrids for all the traits. There was no clear trend of the importance of the additive and nonadditive genetic effects on agronomical and nutritional traits. Furthermore, the predominant component of genetic variance changed depending on the characteristic. Moreover, there was no parent or cross that was outstanding for all traits simultaneously, showing the high variability generated from these crosses. The Mulamba and Mock index associated with principal components analysis allowed a more significant gain only for agronomic characteristics. However, the per se index, at the univariate level, promoted a more balanced response to selection for all traits. MenosA tropical forage breeding program contains several peculiarities, especially when it involves polyploid species and facultative apomixis. Urochloa spp. are excellent perennial forages, and the identification of superior genotypes depends on the selection of many characteristics under complex genetic control, with high cost and time-consuming evaluation. Therefore, the use of tools such as multivariate analysis and diallel analyses could contribute to improving the efficiency of breeding programs. Thus, the objectives were to estimate (i) the contribution of additive and nonadditive effects on agronomical and nutritional traits in a population of interspecific hybrids of Urochloa spp., originated from a partial diallel between five apomictic and four sexual parents, and (ii) the accuracy of multivariate index selection efficiency. Genetic variability was detected between the parents, crosses, and hybrids for all the traits. There was no clear trend of the importance of the additive and nonadditive genetic effects on agronomical and nutritional traits. Furthermore, the predominant component of genetic variance changed depending on the characteristic. Moreover, there was no parent or cross that was outstanding for all traits simultaneously, showing the high variability generated from these crosses. The Mulamba and Mock index associated with principal components analysis allowed a more significant gain only for agronomic characteristics. However, the per se index, at the univar... Mostrar Tudo |
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Thesagro: |
Apomixia; Controle Genético; Cruzamento Animal; Forrageira Tropical; Gramínea Perene; Hibrido. |
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Thesaurus Nal: |
Breeding; Grasslands; Hybrids; Livestock; Perennials; Polyploidy; Urochloa. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/193437/1/Contribution-of-additive-and-dominance.pdf
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Marc: |
LEADER 02652naa a2200373 a 4500
001 2106550
005 2019-02-27
008 2018 bl uuuu u00u1 u #d
100 1 $aMATIAS, F. I.
245 $aContribution of Additive and Dominance Effects on Agronomical and Nutritional Traits, and Multivariate Selection on Urochloa spp. Hybrids.$h[electronic resource]
260 $c2018
520 $aA tropical forage breeding program contains several peculiarities, especially when it involves polyploid species and facultative apomixis. Urochloa spp. are excellent perennial forages, and the identification of superior genotypes depends on the selection of many characteristics under complex genetic control, with high cost and time-consuming evaluation. Therefore, the use of tools such as multivariate analysis and diallel analyses could contribute to improving the efficiency of breeding programs. Thus, the objectives were to estimate (i) the contribution of additive and nonadditive effects on agronomical and nutritional traits in a population of interspecific hybrids of Urochloa spp., originated from a partial diallel between five apomictic and four sexual parents, and (ii) the accuracy of multivariate index selection efficiency. Genetic variability was detected between the parents, crosses, and hybrids for all the traits. There was no clear trend of the importance of the additive and nonadditive genetic effects on agronomical and nutritional traits. Furthermore, the predominant component of genetic variance changed depending on the characteristic. Moreover, there was no parent or cross that was outstanding for all traits simultaneously, showing the high variability generated from these crosses. The Mulamba and Mock index associated with principal components analysis allowed a more significant gain only for agronomic characteristics. However, the per se index, at the univariate level, promoted a more balanced response to selection for all traits.
650 $aBreeding
650 $aGrasslands
650 $aHybrids
650 $aLivestock
650 $aPerennials
650 $aPolyploidy
650 $aUrochloa
650 $aApomixia
650 $aControle Genético
650 $aCruzamento Animal
650 $aForrageira Tropical
650 $aGramínea Perene
650 $aHibrido
700 1 $aBARRIOS, S. C. L.
700 1 $aBEARARI, L. M.
700 1 $aMEIRELES, K. G. X.
700 1 $aMATEUS, R. G.
700 1 $aAMARAL, P. N. C. do
700 1 $aALVES, G. F.
700 1 $aVALLE, C. B. do
700 1 $aFRITSCHE-NETO, R.
773 $tCrop Science$gv. 58, n. 6, p. 2444-2458, November/December, 2018.
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Registro original: |
Embrapa Gado de Corte (CNPGC) |
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Registro Completo
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
16/08/2001 |
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Data da última atualização: |
06/03/2008 |
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Autoria: |
SACCOL, A. V.; SCHNEIDER, F. M.; ESTEFANEL, V.; BURIOL, G. A.; HELDWEIN, A. B. |
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Título: |
Competicao do Capim-Arroz a Soja Cultivada em Solo Hidromorfico. I. Efeito sobre o Acumulo de Materia Seca de Capim-Arroz e o Rendimento de Graos de Soja. |
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Ano de publicação: |
1993 |
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Fonte/Imprenta: |
Pesquisa Agropecuaria Brasileira, Brasilia, v.28, n.7, p.803-812,jul.1993 |
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Idioma: |
Português |
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Conteúdo: |
O objetivo deste trabalho foi estudar o efeito da interacao do periodo de competicao do capim-arroz versus espacamento entre fileiras sobre acumulo de materia seca de capim-arroz e rendimento de graos de soja, cultivada em um solo hidromorfico. Os resultados evidenciaram que o acumulo de materia seca do capim-arroz aumentou linearmente, enquanto o rendimento de graos de soja decresceu proporcionalmente com o aumento do periodo de competicao da invasora com a cultura. A reducao do espacamento entre fileiras aumentou o grau de competicao da soja com a invasora, e o periodo critico de competicao do capim-arroz variou entre 20 e 50 dias apos a emergencia da soja. Tambem foi verificado que o cultivo da soja por tres anos consecutivos reduziu significativamente a infestacao de capim-arroz e que esta reducao influiu na duracao do periodo critico de competicao. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/AI-SEDE/20536/1/pab07_jul_93.pdf
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Marc: |
LEADER 01441naa a2200169 a 4500
001 1105444
005 2008-03-06
008 1993 bl uuuu u00u1 u #d
100 1 $aSACCOL, A. V.
245 $aCompeticao do Capim-Arroz a Soja Cultivada em Solo Hidromorfico. I. Efeito sobre o Acumulo de Materia Seca de Capim-Arroz e o Rendimento de Graos de Soja.
260 $c1993
520 $aO objetivo deste trabalho foi estudar o efeito da interacao do periodo de competicao do capim-arroz versus espacamento entre fileiras sobre acumulo de materia seca de capim-arroz e rendimento de graos de soja, cultivada em um solo hidromorfico. Os resultados evidenciaram que o acumulo de materia seca do capim-arroz aumentou linearmente, enquanto o rendimento de graos de soja decresceu proporcionalmente com o aumento do periodo de competicao da invasora com a cultura. A reducao do espacamento entre fileiras aumentou o grau de competicao da soja com a invasora, e o periodo critico de competicao do capim-arroz variou entre 20 e 50 dias apos a emergencia da soja. Tambem foi verificado que o cultivo da soja por tres anos consecutivos reduziu significativamente a infestacao de capim-arroz e que esta reducao influiu na duracao do periodo critico de competicao.
700 1 $aSCHNEIDER, F. M.
700 1 $aESTEFANEL, V.
700 1 $aBURIOL, G. A.
700 1 $aHELDWEIN, A. B.
773 $tPesquisa Agropecuaria Brasileira, Brasilia$gv.28, n.7, p.803-812,jul.1993
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Embrapa Unidades Centrais (AI-SEDE) |
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