Genomic behavior of hybrid combinations between elephant grass and pearl millet

Detalhes bibliográficos
Autor(a) principal: Leão, Fernando Ferreira
Data de Publicação: 2011
Outros Autores: Davide, Lisete Chamma, Campos, José Marcello Salabert de, Pereira, Antonio Vander, Bustamante, Fernanda de Oliveira
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFJF
Texto Completo: http://dx.doi.org/10.1590/S0100-204X2011000700006
https://repositorio.ufjf.br/jspui/handle/ufjf/8455
Resumo: O objetivo deste trabalho foi avaliar o comportamento genômico de combinações híbridas resultantes do cruzamento entre capim-elefante (Pennisetum purpureum) e milheto (P. glaucum). Raças cromossômicas tetraploides (AAA'B) e pentaploides (AA'A'BB), resultantes do retrocruzamento do híbrido hexaploide com seus parentais capim-elefante (A'A'BB) e milheto (AA), foram avaliadas quanto ao número cromossômico e ao conteúdo de DNA. Foram comparados os genótipos de capim-elefante, milheto e de híbridos triploides e hexaploides induzidos. As combinações genômicas pentaploides e tetraploides mostraram elevado grau de mixoploidia, em desacordo com o complemento cromossômico somático esperado. O número cromossômico dos pentaploides variou de 20 a 34, e o dos tetraploides de 16 a 28. A variação do número cromossômico foi maior nas combinações genômicas pentaploides do que nas tetraploides, e a mixoploidia foi verificada entre hexaploides. As combinações genômicas 4x e 5x são mixoploides, e a variação do número de cromossomos na raça cromossômica 5x é maior do que na 4x.
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spelling 2019-01-15T14:05:33Z2019-01-112019-01-15T14:05:33Z2011467712719http://dx.doi.org/10.1590/S0100-204X2011000700006https://repositorio.ufjf.br/jspui/handle/ufjf/8455O objetivo deste trabalho foi avaliar o comportamento genômico de combinações híbridas resultantes do cruzamento entre capim-elefante (Pennisetum purpureum) e milheto (P. glaucum). Raças cromossômicas tetraploides (AAA'B) e pentaploides (AA'A'BB), resultantes do retrocruzamento do híbrido hexaploide com seus parentais capim-elefante (A'A'BB) e milheto (AA), foram avaliadas quanto ao número cromossômico e ao conteúdo de DNA. Foram comparados os genótipos de capim-elefante, milheto e de híbridos triploides e hexaploides induzidos. As combinações genômicas pentaploides e tetraploides mostraram elevado grau de mixoploidia, em desacordo com o complemento cromossômico somático esperado. O número cromossômico dos pentaploides variou de 20 a 34, e o dos tetraploides de 16 a 28. A variação do número cromossômico foi maior nas combinações genômicas pentaploides do que nas tetraploides, e a mixoploidia foi verificada entre hexaploides. As combinações genômicas 4x e 5x são mixoploides, e a variação do número de cromossomos na raça cromossômica 5x é maior do que na 4x.The objective of this work was to evaluate the genomic behavior of hybrid combinations between elephant grass (Pennisetum purpureum) and pearl millet (P. glaucum). Tetraploid (AAA'B) and pentaploid (AA'A'BB) chromosome races resulting from the backcross of the hexaploid hybrid to its parents elephant grass (A'A'BB) and pearl millet (AA) were analyzed as to chromosome number and DNA content. Genotypes of elephant grass, millet, and triploid and hexaploid induced hybrids were compared. Pentaploid and tetraploid genomic combinations showed high level of mixoploidy, in discordance with the expected somatic chromosome set. The pentaploid chromosome number ranged from 20 to 34, and the tetraploid chromosome number from 16 to 28. Chromosome number variation was higher in pentaploid genomic combinations than in tetraploid, and mixoploidy was observed among hexaploids. Genomic combinations 4x and 5x are mixoploid, and the variation of chromosome number within chromosomal race 5x is greater than in 4x.eng--BrasilPesquisa Agropecuária Brasileira-Pennisetum glaucumPennisetum purpureumDNA contentInterspecific hybridsMixoploidyPennisetum glaucumPennisetum purpureumConteúdo de DNAHíbridos interespecíficosMixoploidiaGenomic behavior of hybrid combinations between elephant grass and pearl milletComportamento genômico de combinações híbridas entre capim-elefante e milhetoinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleLeão, Fernando FerreiraDavide, Lisete ChammaCampos, José Marcello Salabert dePereira, Antonio VanderBustamante, Fernanda de Oliveirainfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFJFinstname:Universidade Federal de Juiz de Fora (UFJF)instacron:UFJFTHUMBNAILGenomic behavior of hybrid combinations between elephant grass and pearl millet.pdf.jpgGenomic behavior of hybrid combinations between elephant grass and pearl millet.pdf.jpgGenerated Thumbnailimage/jpeg1672https://repositorio.ufjf.br/jspui/bitstream/ufjf/8455/4/Genomic%20behavior%20of%20hybrid%20combinations%20between%20elephant%20grass%20and%20pearl%20millet.pdf.jpgebbefce6c69089e0c056cdcd94ec73b7MD54ORIGINALGenomic behavior of hybrid combinations between elephant grass and pearl millet.pdfGenomic behavior of hybrid combinations between elephant grass and pearl millet.pdfapplication/pdf1333489https://repositorio.ufjf.br/jspui/bitstream/ufjf/8455/1/Genomic%20behavior%20of%20hybrid%20combinations%20between%20elephant%20grass%20and%20pearl%20millet.pdf94b365aa74ac554a097b7676c5867d4cMD51LICENSElicense.txtlicense.txttext/plain; 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dc.title.pt_BR.fl_str_mv Genomic behavior of hybrid combinations between elephant grass and pearl millet
dc.title.alternative.pt_BR.fl_str_mv Comportamento genômico de combinações híbridas entre capim-elefante e milheto
title Genomic behavior of hybrid combinations between elephant grass and pearl millet
spellingShingle Genomic behavior of hybrid combinations between elephant grass and pearl millet
Leão, Fernando Ferreira
-
Pennisetum glaucum
Pennisetum purpureum
DNA content
Interspecific hybrids
Mixoploidy
Pennisetum glaucum
Pennisetum purpureum
Conteúdo de DNA
Híbridos interespecíficos
Mixoploidia
title_short Genomic behavior of hybrid combinations between elephant grass and pearl millet
title_full Genomic behavior of hybrid combinations between elephant grass and pearl millet
title_fullStr Genomic behavior of hybrid combinations between elephant grass and pearl millet
title_full_unstemmed Genomic behavior of hybrid combinations between elephant grass and pearl millet
title_sort Genomic behavior of hybrid combinations between elephant grass and pearl millet
author Leão, Fernando Ferreira
author_facet Leão, Fernando Ferreira
Davide, Lisete Chamma
Campos, José Marcello Salabert de
Pereira, Antonio Vander
Bustamante, Fernanda de Oliveira
author_role author
author2 Davide, Lisete Chamma
Campos, José Marcello Salabert de
Pereira, Antonio Vander
Bustamante, Fernanda de Oliveira
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Leão, Fernando Ferreira
Davide, Lisete Chamma
Campos, José Marcello Salabert de
Pereira, Antonio Vander
Bustamante, Fernanda de Oliveira
dc.subject.cnpq.fl_str_mv -
topic -
Pennisetum glaucum
Pennisetum purpureum
DNA content
Interspecific hybrids
Mixoploidy
Pennisetum glaucum
Pennisetum purpureum
Conteúdo de DNA
Híbridos interespecíficos
Mixoploidia
dc.subject.por.fl_str_mv Pennisetum glaucum
Pennisetum purpureum
DNA content
Interspecific hybrids
Mixoploidy
Pennisetum glaucum
Pennisetum purpureum
Conteúdo de DNA
Híbridos interespecíficos
Mixoploidia
description O objetivo deste trabalho foi avaliar o comportamento genômico de combinações híbridas resultantes do cruzamento entre capim-elefante (Pennisetum purpureum) e milheto (P. glaucum). Raças cromossômicas tetraploides (AAA'B) e pentaploides (AA'A'BB), resultantes do retrocruzamento do híbrido hexaploide com seus parentais capim-elefante (A'A'BB) e milheto (AA), foram avaliadas quanto ao número cromossômico e ao conteúdo de DNA. Foram comparados os genótipos de capim-elefante, milheto e de híbridos triploides e hexaploides induzidos. As combinações genômicas pentaploides e tetraploides mostraram elevado grau de mixoploidia, em desacordo com o complemento cromossômico somático esperado. O número cromossômico dos pentaploides variou de 20 a 34, e o dos tetraploides de 16 a 28. A variação do número cromossômico foi maior nas combinações genômicas pentaploides do que nas tetraploides, e a mixoploidia foi verificada entre hexaploides. As combinações genômicas 4x e 5x são mixoploides, e a variação do número de cromossomos na raça cromossômica 5x é maior do que na 4x.
publishDate 2011
dc.date.issued.fl_str_mv 2011
dc.date.accessioned.fl_str_mv 2019-01-15T14:05:33Z
dc.date.available.fl_str_mv 2019-01-11
2019-01-15T14:05:33Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
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status_str publishedVersion
dc.identifier.uri.fl_str_mv https://repositorio.ufjf.br/jspui/handle/ufjf/8455
dc.identifier.doi.pt_BR.fl_str_mv http://dx.doi.org/10.1590/S0100-204X2011000700006
url http://dx.doi.org/10.1590/S0100-204X2011000700006
https://repositorio.ufjf.br/jspui/handle/ufjf/8455
dc.language.iso.fl_str_mv eng
language eng
dc.relation.ispartof.pt_BR.fl_str_mv Pesquisa Agropecuária Brasileira
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv -
dc.publisher.initials.fl_str_mv -
dc.publisher.country.fl_str_mv Brasil
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dc.source.none.fl_str_mv reponame:Repositório Institucional da UFJF
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institution UFJF
reponame_str Repositório Institucional da UFJF
collection Repositório Institucional da UFJF
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