Abnormal meiotic behavior in three species of Crotalaria

Detalhes bibliográficos
Autor(a) principal: Ferreira, Kátia
Data de Publicação: 2010
Outros Autores: Torres, Giovana Augusta, Carvalho, Isabelle Vilela de, Davide, Lisete Chamma
Tipo de documento: Artigo
Idioma: por
Título da fonte: Pesquisa Agropecuária Brasileira (Online)
Texto Completo: https://seer.sct.embrapa.br/index.php/pab/article/view/2332
Resumo: The objective of this work was to compare the meiotic behavior and pollen grain viability of three species of Crotalaria. Slides for meiotic analysis were prepared by the air-drying technique. Pollen grain viability was measured by three staining procedures (Alexander's solution, tetrazolium chloride and fluorescein diacetate) and in vitro germination in a sucrose solution. Eight bivalents were observed, confirming previous reports on populations from other regions of Brazil, as well as from other countries. All species showed abnormal meiotic behavior as follows: in Crotalaria micans, cytomixis and abnormal chromosome pairing in diakinesis; in C. spectabilis, abnormal chromosome pairing in diplotene; in C. zanzibarica, shrunk nuclei in leptotene and zygotene. Pollen grains of all three species show low viability, which may be associated with the irregularities of the meiotic behavior.
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spelling Abnormal meiotic behavior in three species of CrotalariaComportamento meiótico anormal em três espécies de CrotalariaCrotalaria; cytogenetics; cytomixis; meiosis; pollen grain viabilityCrotalaria; citogenética; citomixia; meiose; viabilidade do grão de pólenThe objective of this work was to compare the meiotic behavior and pollen grain viability of three species of Crotalaria. Slides for meiotic analysis were prepared by the air-drying technique. Pollen grain viability was measured by three staining procedures (Alexander's solution, tetrazolium chloride and fluorescein diacetate) and in vitro germination in a sucrose solution. Eight bivalents were observed, confirming previous reports on populations from other regions of Brazil, as well as from other countries. All species showed abnormal meiotic behavior as follows: in Crotalaria micans, cytomixis and abnormal chromosome pairing in diakinesis; in C. spectabilis, abnormal chromosome pairing in diplotene; in C. zanzibarica, shrunk nuclei in leptotene and zygotene. Pollen grains of all three species show low viability, which may be associated with the irregularities of the meiotic behavior.O objetivo deste trabalho foi comparar o comportamento meiótico e a viabilidade dos grãos de pólen de três espécies de Crotalaria. A análise meiótica foi realizada por meio da técnica de secagem ao ar. A viabilidade dos grãos de pólen foi avaliada por testes de coloração (corante de Alexander, cloreto de tetrazólio e diacetato de fluoresceína) e por teste de germinação em solução de sacarose. Foram observados oito bivalentes, confirmando relatos prévios em populações de outras regiões do Brasil e de outros países. As três espécies apresentaram comportamento meiótico irregular: em Crotalaria micans, citomixia e pareamento irregular na diacinese; em C. spectabilis, pareamento irregular no diplóteno; e em C. zanzibarica, núcleo fortemente condensado nas fases de leptóteno e zigóteno. A viabilidade dos grãos de pólen das três espécies é baixa, o que pode estar associado às irregularidades do comportamento meiótico.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraFundação de Amparo à Pesquisa do Estado de Minas Gerais (FAPEMIG)Ferreira, KátiaTorres, Giovana AugustaCarvalho, Isabelle Vilela deDavide, Lisete Chamma2010-12-22info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/2332Pesquisa Agropecuaria Brasileira; v.44, n.12, dez. 2009; 1641-1646Pesquisa Agropecuária Brasileira; v.44, n.12, dez. 2009; 1641-16461678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/2332/5911https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/2332/1731https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/2332/1732https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/2332/1733https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/2332/1734https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/2332/1735https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/2332/2447https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/2332/2448https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/2332/2449https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/2332/2450info:eu-repo/semantics/openAccess2012-06-17T11:54:27Zoai:ojs.seer.sct.embrapa.br:article/2332Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2012-06-17T11:54:27Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Abnormal meiotic behavior in three species of Crotalaria
Comportamento meiótico anormal em três espécies de Crotalaria
title Abnormal meiotic behavior in three species of Crotalaria
spellingShingle Abnormal meiotic behavior in three species of Crotalaria
Ferreira, Kátia
Crotalaria; cytogenetics; cytomixis; meiosis; pollen grain viability
Crotalaria; citogenética; citomixia; meiose; viabilidade do grão de pólen
title_short Abnormal meiotic behavior in three species of Crotalaria
title_full Abnormal meiotic behavior in three species of Crotalaria
title_fullStr Abnormal meiotic behavior in three species of Crotalaria
title_full_unstemmed Abnormal meiotic behavior in three species of Crotalaria
title_sort Abnormal meiotic behavior in three species of Crotalaria
author Ferreira, Kátia
author_facet Ferreira, Kátia
Torres, Giovana Augusta
Carvalho, Isabelle Vilela de
Davide, Lisete Chamma
author_role author
author2 Torres, Giovana Augusta
Carvalho, Isabelle Vilela de
Davide, Lisete Chamma
author2_role author
author
author
dc.contributor.none.fl_str_mv
Fundação de Amparo à Pesquisa do Estado de Minas Gerais (FAPEMIG)
dc.contributor.author.fl_str_mv Ferreira, Kátia
Torres, Giovana Augusta
Carvalho, Isabelle Vilela de
Davide, Lisete Chamma
dc.subject.por.fl_str_mv Crotalaria; cytogenetics; cytomixis; meiosis; pollen grain viability
Crotalaria; citogenética; citomixia; meiose; viabilidade do grão de pólen
topic Crotalaria; cytogenetics; cytomixis; meiosis; pollen grain viability
Crotalaria; citogenética; citomixia; meiose; viabilidade do grão de pólen
description The objective of this work was to compare the meiotic behavior and pollen grain viability of three species of Crotalaria. Slides for meiotic analysis were prepared by the air-drying technique. Pollen grain viability was measured by three staining procedures (Alexander's solution, tetrazolium chloride and fluorescein diacetate) and in vitro germination in a sucrose solution. Eight bivalents were observed, confirming previous reports on populations from other regions of Brazil, as well as from other countries. All species showed abnormal meiotic behavior as follows: in Crotalaria micans, cytomixis and abnormal chromosome pairing in diakinesis; in C. spectabilis, abnormal chromosome pairing in diplotene; in C. zanzibarica, shrunk nuclei in leptotene and zygotene. Pollen grains of all three species show low viability, which may be associated with the irregularities of the meiotic behavior.
publishDate 2010
dc.date.none.fl_str_mv 2010-12-22
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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.44, n.12, dez. 2009; 1641-1646
Pesquisa Agropecuária Brasileira; v.44, n.12, dez. 2009; 1641-1646
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