Data/hora: 13/06/2024 15:58:11

Provedor de dados: 	Ciência Rural	
País: 	Brazil	
Título: 	Cytogenetic analyses in Paspalum L. reveal new diploid species and accessions	
Autores: 	Pozzobon,Marisa Toniolo; Machado,Ana Caroline de Carvalho; Vaio,Magdalena; Valls,José Francisco Montenegro; Peñaloza,Andréa del Pilar de Souza; Santos,Sileuza dos; Côrtes,Ana Luiza; Rua,Gabriel Hugo.	
Data: 	2008-08-01	
Ano: 	2008	
Palavras-chave: 	Chromosome; Diploid; Polyploid; Ploidy level; Hybrid; Genetic resources.	
Resumo: 	Chromosome numbers were counted in 126 new accessions of 50 Paspalum species from Brazil, Argentina, Paraguay and Bolivia. The chromosome numbers 2n=12, 20, 24, 30, 40, 50, 60, 80 were confirmed. Chromosome numbers for P. arenarium (2n=20), P. barretoi (2n=20), P. aff. ceresia (2n=40), P. corcovadense (2n=20), P. crispulum (2n=20), P. flaccidum (2n=40), P. nummularium (2n=20), P. scalare (2n=20), P. vescum (2n=20) and P. rectum (2n=20) and a diploid cytotype of P. malacophyllum are reported for the first time. The predominance of tetraploid accessions (43.6%) was confirmed, but an unusually high number of diploid species (44%) and accessions (35.7%) was found. These results open new perspectives for breeding programs, phylogenetic studies, and for research on apomixis control, since diploids of Paspalum are typically sexual.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782008000500014	
Editor: 	Universidade Federal de Santa Maria	
Relação: 	10.1590/S0103-84782008000500014	
Formato: 	text/html	
Fonte: 	Ciência Rural  v.38 n.5 2008	
Fonte: 	info:eu-repo/semantics/openAccess