Data/hora: 05/06/2024 14:23:44

Provedor de dados: | 86
País: | Brazil
Título: | Abnormal meiotic behavior in three species of Crotalaria
Autores: | Ferreira,Kátia; Torres,Giovana Augusta; Carvalho,Isabelle Vilela de; Davide,Lisete Chamma.
Data: | 2009-12-01
Ano: | 2009
Palavras-chave: | Crotalaria; Cytogenetics; Cytomixis; Meiosis; Pollen grain viability.
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.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2009001200012

Editor:

Embrapa Secretaria de Pesquisa e Desenvolvimento

Pesquisa Agropecuária Brasileira

Relação: | 10.1590/S0100-204X2009001200012
Formato: | text/html
Fonte: | Pesquisa Agropecuária Brasileira  v.44 n.12 2009
Fonte: | info:eu-repo/semantics/openAccess