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Registro Completo |
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
19/10/2004 |
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Data da última atualização: |
04/05/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
RANGEL, P. H. N.; MORAIS, O. P. de; ZIMMERMANN, F. J. P. |
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Afiliação: |
PAULO HIDEO NAKANO RANGEL, CNPAF; ORLANDO PEIXOTO DE MORAIS, CNPAF; FRANCISCO JOSE P ZIMMERMANN, CNPAF. |
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Título: |
Grain yield gains in three recurrent selection cycles in the CNA-IRAT 4 irrigated rice population. |
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Ano de publicação: |
2002 |
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Fonte/Imprenta: |
Crop Breeding and Applied Biotechnology, v. 2, n. 3, p. 369-373, Sept. 2002. |
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Idioma: |
Inglês |
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Conteúdo: |
One line of research on irrigated rice genetic breeding programs at Embrapa consists of synthesizing wide genetic base populations followed by recurrent selection. This strategy ensures systematic continuous gains for grain yield and other traits of interest. To estimate the gains observed in three recurrent selection cycles in the CNA-IRAT 4 population, the grain yield data from 924 S0:2 families in 14 experiments carried out in various Brazilian states in the 1992/93, 1994/95 and 1997/98 growing seasons were analyzed. A triple lattice (two 10 x 10 and two 8 x 8 lattices) expérimental design was used in the first cycle and Federer augmented blocks in the two subsequent cycles. A non -significant gain was observed in the first cycle (only 15.7 kg/ha (0.28%). The gain observed in the second cycle and the mean gain observed due the selection in the first and second cycles were significante and of high magnitude (369.9 kg/ha (6.65%) and 259.9 kg/ha (4.67%), respectively). Results showed that recurrent selection applied to genetically divergent populations can result in considerable gains for grain yield. |
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Palavras-Chave: |
Genetic breeding; Genetic gain; Irrigado. |
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Thesagro: |
Arroz; Oryza Sativa; Seleção Recorrente. |
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Thesaurus Nal: |
rice. |
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Categoria do assunto: |
G Melhoramento Genético |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/24051/1/c8128f42-5242-0eb9.pdf
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Marc: |
LEADER 01786naa a2200229 a 4500
001 1212564
005 2022-05-04
008 2002 bl uuuu u00u1 u #d
100 1 $aRANGEL, P. H. N.
245 $aGrain yield gains in three recurrent selection cycles in the CNA-IRAT 4 irrigated rice population.
260 $c2002
520 $aOne line of research on irrigated rice genetic breeding programs at Embrapa consists of synthesizing wide genetic base populations followed by recurrent selection. This strategy ensures systematic continuous gains for grain yield and other traits of interest. To estimate the gains observed in three recurrent selection cycles in the CNA-IRAT 4 population, the grain yield data from 924 S0:2 families in 14 experiments carried out in various Brazilian states in the 1992/93, 1994/95 and 1997/98 growing seasons were analyzed. A triple lattice (two 10 x 10 and two 8 x 8 lattices) expérimental design was used in the first cycle and Federer augmented blocks in the two subsequent cycles. A non -significant gain was observed in the first cycle (only 15.7 kg/ha (0.28%). The gain observed in the second cycle and the mean gain observed due the selection in the first and second cycles were significante and of high magnitude (369.9 kg/ha (6.65%) and 259.9 kg/ha (4.67%), respectively). Results showed that recurrent selection applied to genetically divergent populations can result in considerable gains for grain yield.
650 $arice
650 $aArroz
650 $aOryza Sativa
650 $aSeleção Recorrente
653 $aGenetic breeding
653 $aGenetic gain
653 $aIrrigado
700 1 $aMORAIS, O. P. de
700 1 $aZIMMERMANN, F. J. P.
773 $tCrop Breeding and Applied Biotechnology$gv. 2, n. 3, p. 369-373, Sept. 2002.
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Registro original: |
Embrapa Arroz e Feijão (CNPAF) |
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| 103. |  | BARBOSA, F. R.; YOKOYAMA, M.; PEREIRA, P. A. A.; ZIMMERMANN, F. J. P. Danos de Zabrotes subfasciatus (Boh., 1833) (Coleoptera, Bruchidae) em linhagens de feijoeiro (Phaseolus vulgaris) contendo acelina. Anais da Sociedade Entomológica do Brasil, Londrina, v. 29, n. 1, p. 113-121, mar. 2000.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: Nacional - B |
| Biblioteca(s): Embrapa Semiárido. |
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| Registros recuperados : 233 | |
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