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, de Campos, José Marcello Salabert, Pereira, Antônio Vander, Bustamante, Fernanda de Oliveira
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Pesquisa Agropecuária Brasileira (Online)
Texto Completo: https://seer.sct.embrapa.br/index.php/pab/article/view/10234
Resumo: 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.
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spelling Genomic behavior of hybrid combinations between elephant grass and pearl milletComportamento genômico de combinações híbridas entre capim‑elefante e milhetoPennisetum glaucum; Pennisetum purpureum; DNA content; interspecific hybrids; mixoploidyPennisetum glaucum; Pennisetum purpureum; conteúdo de DNA; híbridos interespecíficos; mixoploidiaThe 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.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.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraFAPEMIG, CNPq, CAPESFAPEMIG, CNPq, CAPESLeão, Fernando FerreiraDavide, Lisete Chammade Campos, José Marcello SalabertPereira, Antônio VanderBustamante, Fernanda de Oliveira2011-09-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/10234Pesquisa Agropecuaria Brasileira; v.46, n.7, jul. 2011; 712-719Pesquisa Agropecuária Brasileira; v.46, n.7, jul. 2011; 712-7191678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAenghttps://seer.sct.embrapa.br/index.php/pab/article/view/10234/6440https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/10234/5568info:eu-repo/semantics/openAccess2014-06-03T17:30:57Zoai:ojs.seer.sct.embrapa.br:article/10234Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-06-03T17:30:57Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Genomic behavior of hybrid combinations between elephant grass and pearl millet
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
de Campos, José Marcello Salabert
Pereira, Antônio Vander
Bustamante, Fernanda de Oliveira
author_role author
author2 Davide, Lisete Chamma
de Campos, José Marcello Salabert
Pereira, Antônio Vander
Bustamante, Fernanda de Oliveira
author2_role author
author
author
author
dc.contributor.none.fl_str_mv FAPEMIG, CNPq, CAPES
FAPEMIG, CNPq, CAPES
dc.contributor.author.fl_str_mv Leão, Fernando Ferreira
Davide, Lisete Chamma
de Campos, José Marcello Salabert
Pereira, Antônio Vander
Bustamante, Fernanda de Oliveira
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
topic Pennisetum glaucum; Pennisetum purpureum; DNA content; interspecific hybrids; mixoploidy
Pennisetum glaucum; Pennisetum purpureum; conteúdo de DNA; híbridos interespecíficos; mixoploidia
description 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.
publishDate 2011
dc.date.none.fl_str_mv 2011-09-02
dc.type.none.fl_str_mv
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://seer.sct.embrapa.br/index.php/pab/article/view/10234
url https://seer.sct.embrapa.br/index.php/pab/article/view/10234
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/10234/6440
https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/10234/5568
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 Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
publisher.none.fl_str_mv Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
dc.source.none.fl_str_mv Pesquisa Agropecuaria Brasileira; v.46, n.7, jul. 2011; 712-719
Pesquisa Agropecuária Brasileira; v.46, n.7, jul. 2011; 712-719
1678-3921
0100-104x
reponame:Pesquisa Agropecuária Brasileira (Online)
instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron:EMBRAPA
instname_str Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron_str EMBRAPA
institution EMBRAPA
reponame_str Pesquisa Agropecuária Brasileira (Online)
collection Pesquisa Agropecuária Brasileira (Online)
repository.name.fl_str_mv Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
repository.mail.fl_str_mv pab@sct.embrapa.br || sct.pab@embrapa.br
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