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| Registros recuperados : 4 | |
| Registros recuperados : 4 | |
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Registro Completo
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Biblioteca(s): |
Embrapa Arroz e Feijão; Embrapa Meio-Norte; Embrapa Rondônia. |
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Data corrente: |
31/07/2015 |
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Data da última atualização: |
31/07/2015 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
MORAIS JÚNIOR, O. P. de; MELO, P. G. S.; MORAIS, O. P. de; CASTRO, A. P. de; BRESEGHELLO, F.; UTUMI, M. M.; PEREIRA, J. A.; WRUCK, F. J.; COLOMBARI FILHO, J. M. |
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Afiliação: |
ODILON PEIXOTO DE MORAIS JÚNIOR, UFG; PATRICIA GUIMARÃES SANTOS MELO, UFG; ORLANDO PEIXOTO DE MORAIS, CNPAF; ADRIANO PEREIRA DE CASTRO, CNPAF; FLAVIO BRESEGHELLO, CNPAF; MARLEY MARICO UTUMI, CPAF-RO; JOSE ALMEIDA PEREIRA, CPAMN; FLAVIO JESUS WRUCK, CNPAF; JOSE MANOEL COLOMBARI FILHO, CNPAF. |
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Título: |
Genetic progress after cycles of upland rice recurrent selection. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
Scientia Agricola, Piracicaba, v. 72, n. 4, p. 297-305, July/Aug. 2015. |
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DOI: |
10.1590/0103-9016-2014-0137 |
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Idioma: |
Inglês
Português |
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Conteúdo: |
Periodic assessment of the genetic progress made in recurrent selection programs is essential for assessing the evolution of the programs and identifying the main factors that have contributed to this progress. This study aimed to estimate genetic progress in grain yield, plant height and days-to-flowering achieved in the CNA6 population of upland rice (Oryza sativa L.), after four cycles of recurrent selection; and evaluate the genetic potential of this population to generate superior inbred lines after each selection cycle. The experimental data were obtained from progeny yield trials of each recurrent selection cycle. These trials were carried out in two or three locations per cycle, and consisted of S0:2 progenies and at least three checks. Federer?s augmented block design, with one replication on location (the environment), was adopted. Results revealed genetic progress for grain yield and plant height, with total genetic gains of 375.87 kg ha−1 and -3.90 cm, respectively, during the four selection cycles. The annual relative gain observed for grain yield was 1.54 %. The genetic potential of the population was analysed by the expected proportion of superior inbred lines. The standard adopted as the limit for obtaining superior inbred lines was the average of the checks for each trait. The genetic potential for grain yield and plant height increased during the study period. For days-to-flowering, no genetic gain occurred; however, the genetic potential of the population to generate superior inbred lines for this trait was maintained after the selection cycles. MenosPeriodic assessment of the genetic progress made in recurrent selection programs is essential for assessing the evolution of the programs and identifying the main factors that have contributed to this progress. This study aimed to estimate genetic progress in grain yield, plant height and days-to-flowering achieved in the CNA6 population of upland rice (Oryza sativa L.), after four cycles of recurrent selection; and evaluate the genetic potential of this population to generate superior inbred lines after each selection cycle. The experimental data were obtained from progeny yield trials of each recurrent selection cycle. These trials were carried out in two or three locations per cycle, and consisted of S0:2 progenies and at least three checks. Federer?s augmented block design, with one replication on location (the environment), was adopted. Results revealed genetic progress for grain yield and plant height, with total genetic gains of 375.87 kg ha−1 and -3.90 cm, respectively, during the four selection cycles. The annual relative gain observed for grain yield was 1.54 %. The genetic potential of the population was analysed by the expected proportion of superior inbred lines. The standard adopted as the limit for obtaining superior inbred lines was the average of the checks for each trait. The genetic potential for grain yield and plant height increased during the study period. For days-to-flowering, no genetic gain occurred; however, the genetic potential of the popul... Mostrar Tudo |
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Thesagro: |
Arroz; Melhoramento genético vegetal; Oryza sativa; Seleção recorrente. |
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Categoria do assunto: |
--
G Melhoramento Genético |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/127314/1/sa.pdf
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Marc: |
LEADER 02431naa a2200277 a 4500
001 2021101
005 2015-07-31
008 2015 bl uuuu u00u1 u #d
024 7 $a10.1590/0103-9016-2014-0137$2DOI
100 1 $aMORAIS JÚNIOR, O. P. de
245 $aGenetic progress after cycles of upland rice recurrent selection.$h[electronic resource]
260 $c2015
520 $aPeriodic assessment of the genetic progress made in recurrent selection programs is essential for assessing the evolution of the programs and identifying the main factors that have contributed to this progress. This study aimed to estimate genetic progress in grain yield, plant height and days-to-flowering achieved in the CNA6 population of upland rice (Oryza sativa L.), after four cycles of recurrent selection; and evaluate the genetic potential of this population to generate superior inbred lines after each selection cycle. The experimental data were obtained from progeny yield trials of each recurrent selection cycle. These trials were carried out in two or three locations per cycle, and consisted of S0:2 progenies and at least three checks. Federer?s augmented block design, with one replication on location (the environment), was adopted. Results revealed genetic progress for grain yield and plant height, with total genetic gains of 375.87 kg ha−1 and -3.90 cm, respectively, during the four selection cycles. The annual relative gain observed for grain yield was 1.54 %. The genetic potential of the population was analysed by the expected proportion of superior inbred lines. The standard adopted as the limit for obtaining superior inbred lines was the average of the checks for each trait. The genetic potential for grain yield and plant height increased during the study period. For days-to-flowering, no genetic gain occurred; however, the genetic potential of the population to generate superior inbred lines for this trait was maintained after the selection cycles.
650 $aArroz
650 $aMelhoramento genético vegetal
650 $aOryza sativa
650 $aSeleção recorrente
700 1 $aMELO, P. G. S.
700 1 $aMORAIS, O. P. de
700 1 $aCASTRO, A. P. de
700 1 $aBRESEGHELLO, F.
700 1 $aUTUMI, M. M.
700 1 $aPEREIRA, J. A.
700 1 $aWRUCK, F. J.
700 1 $aCOLOMBARI FILHO, J. M.
773 $tScientia Agricola, Piracicaba$gv. 72, n. 4, p. 297-305, July/Aug. 2015.
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Embrapa Arroz e Feijão (CNPAF) |
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