Meiotic and mitotic behaviour of B chromosomes of ryegrass

Detalhes bibliográficos
Autor(a) principal: Techio,Vânia Helena
Data de Publicação: 2010
Outros Autores: Mittelmann,Andréa, Marció,Simone, Pereira,Antônio Vander
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Ciência Rural
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782010000100014
Resumo: Mitotic and meiotic analyses using conventional and fluorescent stains were employed in plants (accession ETBAZ 055 - origin: Capão do Leão, Rio Grande do Sul State, Brazil) from the Germplasm Active Bank of Ryegrass (Banco Ativo de Germoplasma de Azevém) of Embrapa, for observing the behaviour of B chromosomes. In several meiotic stages, there were observed up to two B chromosomes, which have presented an unstable behaviour regarding their precocious ascension to metaphase I or delays during anaphase I. At the end of the process, the Bs showed predominantly segregation for the nuclei under formation in order to guarantee their propagation. Concerning the cells that comprise the anther tapetum and the root meristems, the B chromosomes have presented a more stable behaviour.
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spelling Meiotic and mitotic behaviour of B chromosomes of ryegrassLolium multiflorumaccessory chromosomepreferential segregationMitotic and meiotic analyses using conventional and fluorescent stains were employed in plants (accession ETBAZ 055 - origin: Capão do Leão, Rio Grande do Sul State, Brazil) from the Germplasm Active Bank of Ryegrass (Banco Ativo de Germoplasma de Azevém) of Embrapa, for observing the behaviour of B chromosomes. In several meiotic stages, there were observed up to two B chromosomes, which have presented an unstable behaviour regarding their precocious ascension to metaphase I or delays during anaphase I. At the end of the process, the Bs showed predominantly segregation for the nuclei under formation in order to guarantee their propagation. Concerning the cells that comprise the anther tapetum and the root meristems, the B chromosomes have presented a more stable behaviour.Universidade Federal de Santa Maria2010-02-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782010000100014Ciência Rural v.40 n.1 2010reponame:Ciência Ruralinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSM10.1590/S0103-84782009005000234info:eu-repo/semantics/openAccessTechio,Vânia HelenaMittelmann,AndréaMarció,SimonePereira,Antônio Vandereng2010-02-03T00:00:00ZRevista
dc.title.none.fl_str_mv Meiotic and mitotic behaviour of B chromosomes of ryegrass
title Meiotic and mitotic behaviour of B chromosomes of ryegrass
spellingShingle Meiotic and mitotic behaviour of B chromosomes of ryegrass
Techio,Vânia Helena
Lolium multiflorum
accessory chromosome
preferential segregation
title_short Meiotic and mitotic behaviour of B chromosomes of ryegrass
title_full Meiotic and mitotic behaviour of B chromosomes of ryegrass
title_fullStr Meiotic and mitotic behaviour of B chromosomes of ryegrass
title_full_unstemmed Meiotic and mitotic behaviour of B chromosomes of ryegrass
title_sort Meiotic and mitotic behaviour of B chromosomes of ryegrass
author Techio,Vânia Helena
author_facet Techio,Vânia Helena
Mittelmann,Andréa
Marció,Simone
Pereira,Antônio Vander
author_role author
author2 Mittelmann,Andréa
Marció,Simone
Pereira,Antônio Vander
author2_role author
author
author
dc.contributor.author.fl_str_mv Techio,Vânia Helena
Mittelmann,Andréa
Marció,Simone
Pereira,Antônio Vander
dc.subject.por.fl_str_mv Lolium multiflorum
accessory chromosome
preferential segregation
topic Lolium multiflorum
accessory chromosome
preferential segregation
description Mitotic and meiotic analyses using conventional and fluorescent stains were employed in plants (accession ETBAZ 055 - origin: Capão do Leão, Rio Grande do Sul State, Brazil) from the Germplasm Active Bank of Ryegrass (Banco Ativo de Germoplasma de Azevém) of Embrapa, for observing the behaviour of B chromosomes. In several meiotic stages, there were observed up to two B chromosomes, which have presented an unstable behaviour regarding their precocious ascension to metaphase I or delays during anaphase I. At the end of the process, the Bs showed predominantly segregation for the nuclei under formation in order to guarantee their propagation. Concerning the cells that comprise the anther tapetum and the root meristems, the B chromosomes have presented a more stable behaviour.
publishDate 2010
dc.date.none.fl_str_mv 2010-02-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782010000100014
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782010000100014
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0103-84782009005000234
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Universidade Federal de Santa Maria
publisher.none.fl_str_mv Universidade Federal de Santa Maria
dc.source.none.fl_str_mv Ciência Rural v.40 n.1 2010
reponame:Ciência Rural
instname:Universidade Federal de Santa Maria (UFSM)
instacron:UFSM
instname_str Universidade Federal de Santa Maria (UFSM)
instacron_str UFSM
institution UFSM
reponame_str Ciência Rural
collection Ciência Rural
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1749140535089561600

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