Data/hora: 10/06/2024 17:59:15

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