Genetic variability in S1 families from different maize populations - DOI: 10.4025/actasciagron.v31i2.790

Detalhes bibliográficos
Autor(a) principal: Garbuglio, Deoclecio Domingos
Data de Publicação: 2009
Outros Autores: Miranda Filho, José Branco, Cella, Marcos
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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spelling 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
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format article
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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
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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
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reponame:Acta Scientiarum. Agronomy (Online)
instname:Universidade Estadual de Maringá (UEM)
instacron:UEM
instname_str Universidade Estadual de Maringá (UEM)
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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
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