Genetic progress after cycles of upland rice recurrent selection.
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
Texto Completo: | http://www.alice.cnptia.embrapa.br/alice/handle/doc/1021101 |
Resumo: | 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. |
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Genetic progress after cycles of upland rice recurrent selection.ArrozOryza sativaSeleção recorrenteMelhoramento genético vegetalPeriodic 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.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.MORAIS JÚNIOR, O. P. deMELO, P. G. S.MORAIS, O. P. deCASTRO, A. P. deBRESEGHELLO, F.UTUMI, M. M.PEREIRA, J. A.WRUCK, F. J.COLOMBARI FILHO, J. M.2015-07-31T11:11:11Z2015-07-31T11:11:11Z2015-07-3120152015-07-31T11:11:11Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleScientia Agricola, Piracicaba, v. 72, n. 4, p. 297-305, July/Aug. 2015.http://www.alice.cnptia.embrapa.br/alice/handle/doc/102110110.1590/0103-9016-2014-0137enginfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPA2017-08-16T02:28:19Zoai:www.alice.cnptia.embrapa.br:doc/1021101Repositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestopendoar:21542017-08-16T02:28:19falseRepositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestcg-riaa@embrapa.bropendoar:21542017-08-16T02:28:19Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Genetic progress after cycles of upland rice recurrent selection. |
title |
Genetic progress after cycles of upland rice recurrent selection. |
spellingShingle |
Genetic progress after cycles of upland rice recurrent selection. MORAIS JÚNIOR, O. P. de Arroz Oryza sativa Seleção recorrente Melhoramento genético vegetal |
title_short |
Genetic progress after cycles of upland rice recurrent selection. |
title_full |
Genetic progress after cycles of upland rice recurrent selection. |
title_fullStr |
Genetic progress after cycles of upland rice recurrent selection. |
title_full_unstemmed |
Genetic progress after cycles of upland rice recurrent selection. |
title_sort |
Genetic progress after cycles of upland rice recurrent selection. |
author |
MORAIS JÚNIOR, O. P. de |
author_facet |
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. |
author_role |
author |
author2 |
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. |
author2_role |
author author author author author author author author |
dc.contributor.none.fl_str_mv |
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. |
dc.contributor.author.fl_str_mv |
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. |
dc.subject.por.fl_str_mv |
Arroz Oryza sativa Seleção recorrente Melhoramento genético vegetal |
topic |
Arroz Oryza sativa Seleção recorrente Melhoramento genético vegetal |
description |
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. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-07-31T11:11:11Z 2015-07-31T11:11:11Z 2015-07-31 2015 2015-07-31T11:11:11Z |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
Scientia Agricola, Piracicaba, v. 72, n. 4, p. 297-305, July/Aug. 2015. http://www.alice.cnptia.embrapa.br/alice/handle/doc/1021101 10.1590/0103-9016-2014-0137 |
identifier_str_mv |
Scientia Agricola, Piracicaba, v. 72, n. 4, p. 297-305, July/Aug. 2015. 10.1590/0103-9016-2014-0137 |
url |
http://www.alice.cnptia.embrapa.br/alice/handle/doc/1021101 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
instname_str |
Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
instacron_str |
EMBRAPA |
institution |
EMBRAPA |
reponame_str |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
collection |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
repository.name.fl_str_mv |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
repository.mail.fl_str_mv |
cg-riaa@embrapa.br |
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1794503408829333504 |