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: | Scientia Agrícola (Online) |
Texto Completo: | https://www.revistas.usp.br/sa/article/view/100202 |
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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Scientia Agrícola (Online) |
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Genetic progress after cycles of upland rice recurrent selection 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. Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz2015-08-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://www.revistas.usp.br/sa/article/view/10020210.1590/0103-9016-2014-0137Scientia Agricola; v. 72 n. 4 (2015); 297-305Scientia Agricola; Vol. 72 Núm. 4 (2015); 297-305Scientia Agricola; Vol. 72 No. 4 (2015); 297-3051678-992X0103-9016reponame:Scientia Agrícola (Online)instname:Universidade de São Paulo (USP)instacron:USPenghttps://www.revistas.usp.br/sa/article/view/100202/98864Copyright (c) 2015 Scientia Agricolainfo:eu-repo/semantics/openAccessMorais Júnior, Odilon Peixoto de Melo, Patrícia Guimarães Santos Morais, Orlando Peixoto de Castro, Adriano Pereira de Breseghello, Flávio Utumi, Marley Marico Pereira, José Almeida Wruck, Flávio Jesus Colombari Filho, José Manoel 2015-08-31T12:45:45Zoai:revistas.usp.br:article/100202Revistahttp://revistas.usp.br/sa/indexPUBhttps://old.scielo.br/oai/scielo-oai.phpscientia@usp.br||alleoni@usp.br1678-992X0103-9016opendoar:2015-08-31T12:45:45Scientia Agrícola (Online) - Universidade de São Paulo (USP)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, Odilon Peixoto de |
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, Odilon Peixoto de |
author_facet |
Morais Júnior, Odilon Peixoto de Melo, Patrícia Guimarães Santos Morais, Orlando Peixoto de Castro, Adriano Pereira de Breseghello, Flávio Utumi, Marley Marico Pereira, José Almeida Wruck, Flávio Jesus Colombari Filho, José Manoel |
author_role |
author |
author2 |
Melo, Patrícia Guimarães Santos Morais, Orlando Peixoto de Castro, Adriano Pereira de Breseghello, Flávio Utumi, Marley Marico Pereira, José Almeida Wruck, Flávio Jesus Colombari Filho, José Manoel |
author2_role |
author author author author author author author author |
dc.contributor.author.fl_str_mv |
Morais Júnior, Odilon Peixoto de Melo, Patrícia Guimarães Santos Morais, Orlando Peixoto de Castro, Adriano Pereira de Breseghello, Flávio Utumi, Marley Marico Pereira, José Almeida Wruck, Flávio Jesus Colombari Filho, José Manoel |
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 |
2015-08-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://www.revistas.usp.br/sa/article/view/100202 10.1590/0103-9016-2014-0137 |
url |
https://www.revistas.usp.br/sa/article/view/100202 |
identifier_str_mv |
10.1590/0103-9016-2014-0137 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://www.revistas.usp.br/sa/article/view/100202/98864 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2015 Scientia Agricola info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2015 Scientia Agricola |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz |
publisher.none.fl_str_mv |
Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz |
dc.source.none.fl_str_mv |
Scientia Agricola; v. 72 n. 4 (2015); 297-305 Scientia Agricola; Vol. 72 Núm. 4 (2015); 297-305 Scientia Agricola; Vol. 72 No. 4 (2015); 297-305 1678-992X 0103-9016 reponame:Scientia Agrícola (Online) instname:Universidade de São Paulo (USP) instacron:USP |
instname_str |
Universidade de São Paulo (USP) |
instacron_str |
USP |
institution |
USP |
reponame_str |
Scientia Agrícola (Online) |
collection |
Scientia Agrícola (Online) |
repository.name.fl_str_mv |
Scientia Agrícola (Online) - Universidade de São Paulo (USP) |
repository.mail.fl_str_mv |
scientia@usp.br||alleoni@usp.br |
_version_ |
1800222792467087360 |