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Registro Completo |
Biblioteca(s): |
Embrapa Hortaliças. |
Data corrente: |
18/05/1999 |
Data da última atualização: |
18/05/1999 |
Autoria: |
COSTA, I. R. S.; MIRANDA, J. E. C.; MULLER, J. J. V. |
Afiliação: |
EMBRAPA-CNPH, Brasilia, DF. |
Título: |
Coleta de germoplasma de batata-doce em Santa Catarina e sul do Parana. |
Ano de publicação: |
1989 |
Fonte/Imprenta: |
Horticultura Brasileira, Brasilia, v.7, n.1, p.50, maio 1989. |
Idioma: |
Português |
Notas: |
Resumo. |
Palavras-Chave: |
Bank; Batata-doce; Brasil; Colect; Coleta; Parana; Santa Catarina. |
Thesagro: |
Banco de Germoplasma; Ipomoea Batatas. |
Thesaurus Nal: |
Brazil; germplasm; sweet potatoes. |
Categoria do assunto: |
-- |
Marc: |
LEADER 00753naa a2200289 a 4500 001 1764127 005 1999-05-18 008 1989 bl uuuu u00u1 u #d 100 1 $aCOSTA, I. R. S. 245 $aColeta de germoplasma de batata-doce em Santa Catarina e sul do Parana. 260 $c1989 500 $aResumo. 650 $aBrazil 650 $agermplasm 650 $asweet potatoes 650 $aBanco de Germoplasma 650 $aIpomoea Batatas 653 $aBank 653 $aBatata-doce 653 $aBrasil 653 $aColect 653 $aColeta 653 $aParana 653 $aSanta Catarina 700 1 $aMIRANDA, J. E. C. 700 1 $aMULLER, J. J. V. 773 $tHorticultura Brasileira, Brasilia$gv.7, n.1, p.50, maio 1989.
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Embrapa Hortaliças (CNPH) |
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![](/consulta/web/img/deny.png) | Acesso ao texto completo restrito à biblioteca da Embrapa Arroz e Feijão. Para informações adicionais entre em contato com cnpaf.biblioteca@embrapa.br. |
Registro Completo
Biblioteca(s): |
Embrapa Arroz e Feijão. |
Data corrente: |
17/09/2018 |
Data da última atualização: |
17/09/2018 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 2 |
Autoria: |
BARROS, M. S.; MORAIS JÚNIOR, O. P.; MELO, P. G. S.; MORAIS, O. P.; CASTRO, A. P.; BRESEGHELLO, F. |
Afiliação: |
MATHEUS S. BARROS, UFG; ODILON PEIXOTO MORAIS JUNIOR, UFG; PATRICIA G. S. MELO, UFG; ORLANDO PEIXOTO DE MORAIS, CNPAF; ADRIANO PEREIRA DE CASTRO, CNPAF; FLAVIO BRESEGHELLO, CNPAF. |
Título: |
Effectiveness of early-generation testing applied to upland rice breeding. |
Ano de publicação: |
2018 |
Fonte/Imprenta: |
Euphytica, v. 214, n. 4, article 61, Apr. 2018. |
ISSN: |
1573-5060 |
DOI: |
10.1007/s10681-018-2145-z |
Idioma: |
Inglês |
Conteúdo: |
A plant breeding program is a long-term investment. Therefore, periodic assessment of the effectiveness of a breeding strategy is essential to maximize genetic gains per unit of time and resource invested. In this work, we assessed the effectiveness of the early-generation testing (EGT) approach used in the upland rice (Oryza sativa L.) breeding program at Embrapa (Brazilian Agricultural Research Corporation), Brazil, estimating the genetic progress achieved for three traits in two distinct phases, spanning 15 years. In the first phase (from 2003 to 2010), it was used the bulk method within F3 progenies with prior testing of F2 crosses, while in the second phase (from 2010 to 2017), it was used the bulk method within F2 progenies. The dataset comprised 70 yield trials, involving 1884 F3:5 progenies (phase I) and 925 F2:4 progenies (phase II) from an elite population, and 10 check cultivars, evaluated for grain yield (GY), plant height (PH) and days to flowering (DTF). For estimating the genetic gain, we adapted a generalized linear regression method to compute bi-segmented linear regression coefficients. Desirable genetic gains were achieved only for GY in both phases of the breeding program, with 78.75 kg ha−1 year−1 (2.68%) in the first phase, and 53.78 kg ha−1 year−1 (1.54%) in the second phase. These results show the effectiveness of EGT, especially via bulk method within F3 progenies with prior testing of F2 crosses, applied to upland rice breeding. Some refinements are discussed in the method to make it more cost-effective and more efficient in achieving genetic gains. MenosA plant breeding program is a long-term investment. Therefore, periodic assessment of the effectiveness of a breeding strategy is essential to maximize genetic gains per unit of time and resource invested. In this work, we assessed the effectiveness of the early-generation testing (EGT) approach used in the upland rice (Oryza sativa L.) breeding program at Embrapa (Brazilian Agricultural Research Corporation), Brazil, estimating the genetic progress achieved for three traits in two distinct phases, spanning 15 years. In the first phase (from 2003 to 2010), it was used the bulk method within F3 progenies with prior testing of F2 crosses, while in the second phase (from 2010 to 2017), it was used the bulk method within F2 progenies. The dataset comprised 70 yield trials, involving 1884 F3:5 progenies (phase I) and 925 F2:4 progenies (phase II) from an elite population, and 10 check cultivars, evaluated for grain yield (GY), plant height (PH) and days to flowering (DTF). For estimating the genetic gain, we adapted a generalized linear regression method to compute bi-segmented linear regression coefficients. Desirable genetic gains were achieved only for GY in both phases of the breeding program, with 78.75 kg ha−1 year−1 (2.68%) in the first phase, and 53.78 kg ha−1 year−1 (1.54%) in the second phase. These results show the effectiveness of EGT, especially via bulk method within F3 progenies with prior testing of F2 crosses, applied to upland rice breedi... Mostrar Tudo |
Palavras-Chave: |
Mixed-model analysis. |
Thesagro: |
Arroz; Genética; Melhoramento Genético Vegetal; Oryza Sativa. |
Thesaurus NAL: |
Breeding methods; Meta-analysis; Plant breeding; Quantitative genetics; Rice. |
Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
Marc: |
LEADER 02541naa a2200325 a 4500 001 2095859 005 2018-09-17 008 2018 bl uuuu u00u1 u #d 022 $a1573-5060 024 7 $a10.1007/s10681-018-2145-z$2DOI 100 1 $aBARROS, M. S. 245 $aEffectiveness of early-generation testing applied to upland rice breeding.$h[electronic resource] 260 $c2018 520 $aA plant breeding program is a long-term investment. Therefore, periodic assessment of the effectiveness of a breeding strategy is essential to maximize genetic gains per unit of time and resource invested. In this work, we assessed the effectiveness of the early-generation testing (EGT) approach used in the upland rice (Oryza sativa L.) breeding program at Embrapa (Brazilian Agricultural Research Corporation), Brazil, estimating the genetic progress achieved for three traits in two distinct phases, spanning 15 years. In the first phase (from 2003 to 2010), it was used the bulk method within F3 progenies with prior testing of F2 crosses, while in the second phase (from 2010 to 2017), it was used the bulk method within F2 progenies. The dataset comprised 70 yield trials, involving 1884 F3:5 progenies (phase I) and 925 F2:4 progenies (phase II) from an elite population, and 10 check cultivars, evaluated for grain yield (GY), plant height (PH) and days to flowering (DTF). For estimating the genetic gain, we adapted a generalized linear regression method to compute bi-segmented linear regression coefficients. Desirable genetic gains were achieved only for GY in both phases of the breeding program, with 78.75 kg ha−1 year−1 (2.68%) in the first phase, and 53.78 kg ha−1 year−1 (1.54%) in the second phase. These results show the effectiveness of EGT, especially via bulk method within F3 progenies with prior testing of F2 crosses, applied to upland rice breeding. Some refinements are discussed in the method to make it more cost-effective and more efficient in achieving genetic gains. 650 $aBreeding methods 650 $aMeta-analysis 650 $aPlant breeding 650 $aQuantitative genetics 650 $aRice 650 $aArroz 650 $aGenética 650 $aMelhoramento Genético Vegetal 650 $aOryza Sativa 653 $aMixed-model analysis 700 1 $aMORAIS JÚNIOR, O. P. 700 1 $aMELO, P. G. S. 700 1 $aMORAIS, O. P. 700 1 $aCASTRO, A. P. 700 1 $aBRESEGHELLO, F. 773 $tEuphytica$gv. 214, n. 4, article 61, Apr. 2018.
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