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 | Acesso ao texto completo restrito à biblioteca da Embrapa Arroz e Feijão. Para informações adicionais entre em contato com cnpaf.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
20/02/1995 |
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Data da última atualização: |
29/04/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
CORTE, H. R.; RAMALHO, M. A. P.; GONÇALVES, F. M. A.; ABREU, A. de F. B. |
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Afiliação: |
HERCULES RENATO CORTE, UFLA; MAGNO ANTONIO PATTO RAMALHO, UFLA; FLAVIA MARIA AVELAR CONÇALVES, UFLA; ANGELA DE FATIMA BARBOSA ABREU, CNPAF. |
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Título: |
Natural selection for grain yield in dry bean populations bred by the bulk method. |
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Ano de publicação: |
2002 |
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Fonte/Imprenta: |
Euphytica, v. 123, n. 3, p. 387-393, Feb. 2002. |
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DOI: |
10.1023/A:1015065815131 |
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Idioma: |
Inglês |
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Conteúdo: |
Three dry bean harvests are possible in some regions of Brazil that differ significantly in temperature, rainfall and day length conditions. Thus in breeding programs, generation advance using the bulk method can be carried out in these three periods. It is questionable whether under conditions such as these the action of natural selection would contribute to an increased frequency of individuals considered superior by breeders. The present study assessed six segregating populations, for up to 17 successive generations to check the effects of natural selection during inbreeding. Six populations were generated from a partial diallel: one group consisting of two early maturity cultivars, ESAL 686 and Manteigão Fosco was crossed to a second group of three cultivars with medium maturity, Carioca MG, Milionario and Ouro. The six populations plus the five parents were assessed in experiments using a randomized complete block design, in three locations: Lavras, where in breeding started from the F2 generation; Lambari and Patos de Minas, from the F3 generation. A linear regression equation was fitted to the parents and hybrids mean data in each location, considering grain yield as the dependent variable (y) and generations (F2 = 1, F3 = 2, etc.) as the independent variable. Genetic progress was estimated from the differences between the linear regression coefficients of the hybrids (bi)and the mean of the b coefficient of their respective parents (bj). The (bi-bj) were positive in all cases, showing that natural selection acted in all the segregating populations and contributed to an average increase in grain yield of 2.5% per generation over the mean of the parents. MenosThree dry bean harvests are possible in some regions of Brazil that differ significantly in temperature, rainfall and day length conditions. Thus in breeding programs, generation advance using the bulk method can be carried out in these three periods. It is questionable whether under conditions such as these the action of natural selection would contribute to an increased frequency of individuals considered superior by breeders. The present study assessed six segregating populations, for up to 17 successive generations to check the effects of natural selection during inbreeding. Six populations were generated from a partial diallel: one group consisting of two early maturity cultivars, ESAL 686 and Manteigão Fosco was crossed to a second group of three cultivars with medium maturity, Carioca MG, Milionario and Ouro. The six populations plus the five parents were assessed in experiments using a randomized complete block design, in three locations: Lavras, where in breeding started from the F2 generation; Lambari and Patos de Minas, from the F3 generation. A linear regression equation was fitted to the parents and hybrids mean data in each location, considering grain yield as the dependent variable (y) and generations (F2 = 1, F3 = 2, etc.) as the independent variable. Genetic progress was estimated from the differences between the linear regression coefficients of the hybrids (bi)and the mean of the b coefficient of their respective parents (bj). The (bi-bj) were positive in ... Mostrar Tudo |
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Thesagro: |
Feijão; Grão; Melhoramento Genético Vegetal; Método; Phaseolus Vulgaris; Seleção. |
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Thesaurus Nal: |
Beans; Gene segregation; Natural selection; Plant breeding. |
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Categoria do assunto: |
G Melhoramento Genético |
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Marc: |
LEADER 02513naa a2200289 a 4500
001 1199249
005 2022-04-29
008 2002 bl uuuu u00u1 u #d
024 7 $a10.1023/A:1015065815131$2DOI
100 1 $aCORTE, H. R.
245 $aNatural selection for grain yield in dry bean populations bred by the bulk method.$h[electronic resource]
260 $c2002
520 $aThree dry bean harvests are possible in some regions of Brazil that differ significantly in temperature, rainfall and day length conditions. Thus in breeding programs, generation advance using the bulk method can be carried out in these three periods. It is questionable whether under conditions such as these the action of natural selection would contribute to an increased frequency of individuals considered superior by breeders. The present study assessed six segregating populations, for up to 17 successive generations to check the effects of natural selection during inbreeding. Six populations were generated from a partial diallel: one group consisting of two early maturity cultivars, ESAL 686 and Manteigão Fosco was crossed to a second group of three cultivars with medium maturity, Carioca MG, Milionario and Ouro. The six populations plus the five parents were assessed in experiments using a randomized complete block design, in three locations: Lavras, where in breeding started from the F2 generation; Lambari and Patos de Minas, from the F3 generation. A linear regression equation was fitted to the parents and hybrids mean data in each location, considering grain yield as the dependent variable (y) and generations (F2 = 1, F3 = 2, etc.) as the independent variable. Genetic progress was estimated from the differences between the linear regression coefficients of the hybrids (bi)and the mean of the b coefficient of their respective parents (bj). The (bi-bj) were positive in all cases, showing that natural selection acted in all the segregating populations and contributed to an average increase in grain yield of 2.5% per generation over the mean of the parents.
650 $aBeans
650 $aGene segregation
650 $aNatural selection
650 $aPlant breeding
650 $aFeijão
650 $aGrão
650 $aMelhoramento Genético Vegetal
650 $aMétodo
650 $aPhaseolus Vulgaris
650 $aSeleção
700 1 $aRAMALHO, M. A. P.
700 1 $aGONÇALVES, F. M. A.
700 1 $aABREU, A. de F. B.
773 $tEuphytica$gv. 123, n. 3, p. 387-393, Feb. 2002.
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Registro original: |
Embrapa Arroz e Feijão (CNPAF) |
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Tipo/Formato |
Classificação |
Cutter |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Cerrados. Para informações adicionais entre em contato com cpac.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
16/07/1992 |
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Data da última atualização: |
16/07/1992 |
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Autoria: |
SOUZA, P. I. de M. de; SPEHAR, C. R.; URBEN FILHO, G.; VILELA, L.; ZUFFO, N. L.; ARANTES, N. E.; MONTEIRO, P. M. O. F.; KIIHL, R. A. |
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Título: |
BR-9 (savana): uma nova cultivar para os cerrados. |
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Ano de publicação: |
1984 |
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Fonte/Imprenta: |
In: SEMINARIO NACIONAL DE PESQUISA DE SOJA, 3., 1984, Campinas. Anais. Londrina: EMBRAPA-CNPSo, 1984. |
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Páginas: |
p.401-405. |
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Série: |
(EMBRAPA-CNPSo. Documentos, 7). |
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Idioma: |
Português |
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Conteúdo: |
A cultivar BR-9 (Savana) e resultado de uma selecao individual efetuada no "Bulk" Lo B 74-2, em F4, formado por resultados de cruzamento entre 'Davis', com 'Santa rosa', IAC 73-481, IAC 73-1075 e F 67-5221. Com linhagem, recebeu o nome de CPAC 76-34 e teve suas caracteristicas determinadas em diferentes anos e locais. Seu lancamento com o nome de BR-9 (Savana) teve como suporte o seu bom comportamento quando comparada com as cultivares ja utilizadas na regiao dos Cerrados, mais precisamente entre os paralelos 13o. latitudes S. e 21o. latitude S. |
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Palavras-Chave: |
Cultivar BR-9 Savana. |
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Thesagro: |
Cerrado; Glycine Max; Soja. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01335naa a2200277 a 4500
001 1547532
005 1992-07-16
008 1984 bl uuuu u00u1 u #d
100 1 $aSOUZA, P. I. de M. de
245 $aBR-9 (savana)$buma nova cultivar para os cerrados.
260 $c1984
300 $ap.401-405.
490 $a(EMBRAPA-CNPSo. Documentos, 7).
520 $aA cultivar BR-9 (Savana) e resultado de uma selecao individual efetuada no "Bulk" Lo B 74-2, em F4, formado por resultados de cruzamento entre 'Davis', com 'Santa rosa', IAC 73-481, IAC 73-1075 e F 67-5221. Com linhagem, recebeu o nome de CPAC 76-34 e teve suas caracteristicas determinadas em diferentes anos e locais. Seu lancamento com o nome de BR-9 (Savana) teve como suporte o seu bom comportamento quando comparada com as cultivares ja utilizadas na regiao dos Cerrados, mais precisamente entre os paralelos 13o. latitudes S. e 21o. latitude S.
650 $aCerrado
650 $aGlycine Max
650 $aSoja
653 $aCultivar BR-9 Savana
700 1 $aSPEHAR, C. R.
700 1 $aURBEN FILHO, G.
700 1 $aVILELA, L.
700 1 $aZUFFO, N. L.
700 1 $aARANTES, N. E.
700 1 $aMONTEIRO, P. M. O. F.
700 1 $aKIIHL, R. A.
773 $tIn: SEMINARIO NACIONAL DE PESQUISA DE SOJA, 3., 1984, Campinas. Anais. Londrina: EMBRAPA-CNPSo, 1984.
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Embrapa Cerrados (CPAC) |
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