| Registro completo |
| Provedor de dados: |
PAB
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| País: |
Brazil
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| Título: |
Abnormal meiotic behavior in three species of Crotalaria
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| Autores: |
Ferreira,Kátia
Torres,Giovana Augusta
Carvalho,Isabelle Vilela de
Davide,Lisete Chamma
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| Data: |
2009-12-01
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| Ano: |
2009
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| Palavras-chave: |
Crotalaria
Cytogenetics
Cytomixis
Meiosis
Pollen grain viability
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| 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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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2009001200012
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| Editor: |
Embrapa Secretaria de Pesquisa e Desenvolvimento
Pesquisa Agropecuária Brasileira
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| Relação: |
10.1590/S0100-204X2009001200012
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| Formato: |
text/html
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| Fonte: |
Pesquisa Agropecuária Brasileira v.44 n.12 2009
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| Direitos: |
info:eu-repo/semantics/openAccess
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