Genetic variability in S1 families from different maize populations - DOI: 10.4025/actasciagron.v31i2.790
Autor(a) principal: | |
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Data de Publicação: | 2009 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Acta Scientiarum. Agronomy (Online) |
Texto Completo: | http://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/790 |
Resumo: | The objectives of the present work were directed towards the study of genetic variability in seven maize populations with a broad genetic base, as a guide for population improvement. The field evaluation was conducted in completely randomized blocks, at one location (Anhembi, São Paulo state) with different groups of S1 families obtained from seven populations (GO-D: dent type, GO-F: flint type, GO-L: long ear, GO-G: thick ear; and composites G3, G4 and GO-S). Estimates were obtained for genetic variance (progeny mean basis), phenotypic variance of families means, and coefficient of heritability (broad sense) for progeny means. Estimates of heritability were high for ear weight (0.89 to 0.94), ear length (0.77 to 0.88) and ear diameter (0.77 to 0.92); and lower for plant height (0.58 to 0.80) and ear height (0.54 to 0.84), thus showing the high potential of the populations for recurrent selection based on S1 families. Ear yield in the base populations used as controls varied from 11,200 kg ha-1 (GO-D) to 12,800 kg ha-1 (G3). The means of S1 families varied from 6,070 kg ha-1 (GO-F) to 7,380 kg ha-1 (G4); the inbreeding depression in S1 families varied from 37.5% (G4) to 48.0% (G3) relative to the non-inbred population. |
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Genetic variability in S1 families from different maize populations - DOI: 10.4025/actasciagron.v31i2.790Variabilidade genética em famílias S1 de diferentes populações de milho - DOI: 10.4025/actasciagron.v31i2.790Zea mays L.breedingrecurrent selectionZea mays L.melhoramentoseleção recorrenteMelhoramento VegetalThe objectives of the present work were directed towards the study of genetic variability in seven maize populations with a broad genetic base, as a guide for population improvement. The field evaluation was conducted in completely randomized blocks, at one location (Anhembi, São Paulo state) with different groups of S1 families obtained from seven populations (GO-D: dent type, GO-F: flint type, GO-L: long ear, GO-G: thick ear; and composites G3, G4 and GO-S). Estimates were obtained for genetic variance (progeny mean basis), phenotypic variance of families means, and coefficient of heritability (broad sense) for progeny means. Estimates of heritability were high for ear weight (0.89 to 0.94), ear length (0.77 to 0.88) and ear diameter (0.77 to 0.92); and lower for plant height (0.58 to 0.80) and ear height (0.54 to 0.84), thus showing the high potential of the populations for recurrent selection based on S1 families. Ear yield in the base populations used as controls varied from 11,200 kg ha-1 (GO-D) to 12,800 kg ha-1 (G3). The means of S1 families varied from 6,070 kg ha-1 (GO-F) to 7,380 kg ha-1 (G4); the inbreeding depression in S1 families varied from 37.5% (G4) to 48.0% (G3) relative to the non-inbred population.Os objetivos do presente trabalho se dirigem ao estudo da variabilidade genética em sete populações de milho de ampla base genética, visando ao melhoramento de populações. Os experimentos foram instalados em blocos casualizados em um local (Anhembi, Estado de São Paulo) com famílias S1 de sete populações (GO-D: dentado, GO-F: flint, GO-L: espiga longa, GO-G: espiga grossa; e compostos G3, G4 e GO-S). Foram estimadas a variância genética entre médias de famílias, a variância fenotípica entre médias de famílias e o coeficiente de herdabilidade (sentido amplo) para médias de famílias. As estimativas de herdabilidade foram altas para peso de espigas (0,89 a 0,94), comprimento da espiga (0,77 a 0,88) e diâmetro da espiga (0,77 a 0,92), e menores para altura da planta (0,58 a 0,80) e altura da espiga (0,54 a 0,84), demonstrando alto potencial das populações para seleção recorrente com famílias S1. O peso de espigas nas populações-base usadas como testemunha apresentou valores variando de 11.200 kg há-1 (GO-D) a 12.800 kg há-1 (G3). As médias de famílias S1 entre populações variaram de 6.070 kg há-1 (GO-F) a 7.380 kg há-1 (G4).Universidade Estadual de Maringá2009-05-14info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/79010.4025/actasciagron.v31i2.790Acta Scientiarum. Agronomy; Vol 31 No 2 (2009); 209-213Acta Scientiarum. Agronomy; v. 31 n. 2 (2009); 209-2131807-86211679-9275reponame:Acta Scientiarum. Agronomy (Online)instname:Universidade Estadual de Maringá (UEM)instacron:UEMporhttp://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/790/790Garbuglio, Deoclecio DomingosMiranda Filho, José BrancoCella, Marcosinfo:eu-repo/semantics/openAccess2022-11-23T18:37:13Zoai:periodicos.uem.br/ojs:article/790Revistahttp://www.periodicos.uem.br/ojs/index.php/ActaSciAgronPUBhttp://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/oaiactaagron@uem.br||actaagron@uem.br|| edamasio@uem.br1807-86211679-9275opendoar:2022-11-23T18:37:13Acta Scientiarum. Agronomy (Online) - Universidade Estadual de Maringá (UEM)false |
dc.title.none.fl_str_mv |
Genetic variability in S1 families from different maize populations - DOI: 10.4025/actasciagron.v31i2.790 Variabilidade genética em famílias S1 de diferentes populações de milho - DOI: 10.4025/actasciagron.v31i2.790 |
title |
Genetic variability in S1 families from different maize populations - DOI: 10.4025/actasciagron.v31i2.790 |
spellingShingle |
Genetic variability in S1 families from different maize populations - DOI: 10.4025/actasciagron.v31i2.790 Garbuglio, Deoclecio Domingos Zea mays L. breeding recurrent selection Zea mays L. melhoramento seleção recorrente Melhoramento Vegetal |
title_short |
Genetic variability in S1 families from different maize populations - DOI: 10.4025/actasciagron.v31i2.790 |
title_full |
Genetic variability in S1 families from different maize populations - DOI: 10.4025/actasciagron.v31i2.790 |
title_fullStr |
Genetic variability in S1 families from different maize populations - DOI: 10.4025/actasciagron.v31i2.790 |
title_full_unstemmed |
Genetic variability in S1 families from different maize populations - DOI: 10.4025/actasciagron.v31i2.790 |
title_sort |
Genetic variability in S1 families from different maize populations - DOI: 10.4025/actasciagron.v31i2.790 |
author |
Garbuglio, Deoclecio Domingos |
author_facet |
Garbuglio, Deoclecio Domingos Miranda Filho, José Branco Cella, Marcos |
author_role |
author |
author2 |
Miranda Filho, José Branco Cella, Marcos |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Garbuglio, Deoclecio Domingos Miranda Filho, José Branco Cella, Marcos |
dc.subject.por.fl_str_mv |
Zea mays L. breeding recurrent selection Zea mays L. melhoramento seleção recorrente Melhoramento Vegetal |
topic |
Zea mays L. breeding recurrent selection Zea mays L. melhoramento seleção recorrente Melhoramento Vegetal |
description |
The objectives of the present work were directed towards the study of genetic variability in seven maize populations with a broad genetic base, as a guide for population improvement. The field evaluation was conducted in completely randomized blocks, at one location (Anhembi, São Paulo state) with different groups of S1 families obtained from seven populations (GO-D: dent type, GO-F: flint type, GO-L: long ear, GO-G: thick ear; and composites G3, G4 and GO-S). Estimates were obtained for genetic variance (progeny mean basis), phenotypic variance of families means, and coefficient of heritability (broad sense) for progeny means. Estimates of heritability were high for ear weight (0.89 to 0.94), ear length (0.77 to 0.88) and ear diameter (0.77 to 0.92); and lower for plant height (0.58 to 0.80) and ear height (0.54 to 0.84), thus showing the high potential of the populations for recurrent selection based on S1 families. Ear yield in the base populations used as controls varied from 11,200 kg ha-1 (GO-D) to 12,800 kg ha-1 (G3). The means of S1 families varied from 6,070 kg ha-1 (GO-F) to 7,380 kg ha-1 (G4); the inbreeding depression in S1 families varied from 37.5% (G4) to 48.0% (G3) relative to the non-inbred population. |
publishDate |
2009 |
dc.date.none.fl_str_mv |
2009-05-14 |
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 |
http://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/790 10.4025/actasciagron.v31i2.790 |
url |
http://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/790 |
identifier_str_mv |
10.4025/actasciagron.v31i2.790 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
http://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/790/790 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Estadual de Maringá |
publisher.none.fl_str_mv |
Universidade Estadual de Maringá |
dc.source.none.fl_str_mv |
Acta Scientiarum. Agronomy; Vol 31 No 2 (2009); 209-213 Acta Scientiarum. Agronomy; v. 31 n. 2 (2009); 209-213 1807-8621 1679-9275 reponame:Acta Scientiarum. Agronomy (Online) instname:Universidade Estadual de Maringá (UEM) instacron:UEM |
instname_str |
Universidade Estadual de Maringá (UEM) |
instacron_str |
UEM |
institution |
UEM |
reponame_str |
Acta Scientiarum. Agronomy (Online) |
collection |
Acta Scientiarum. Agronomy (Online) |
repository.name.fl_str_mv |
Acta Scientiarum. Agronomy (Online) - Universidade Estadual de Maringá (UEM) |
repository.mail.fl_str_mv |
actaagron@uem.br||actaagron@uem.br|| edamasio@uem.br |
_version_ |
1799305902780579840 |