Data/hora: 17/06/2024 02:25:28

Provedor de dados: 	Scientia Agricola	
País: 	Brazil	
Título: 	Marker-assisted selection of maintainer lines within an onion tropical population	
Autores: 	Santos,Carlos Antonio Fernandes; Leite,Daniela Lopes; Oliveira,Valter Rodrigues; Rodrigues,Marciene Amorim.	
Data: 	2010-04-01	
Ano: 	2010	
Palavras-chave: 	Allium cepa; CMS; 'Alfa São Francisco'; Tropical hybrid.	
Resumo: 	The traditional onion (Allium cepa) hybrid production requires the development of maintainer and male sterile lines and also a pollinator line with good specific combination ability. We report the identification of maintainer and male-sterile onion lines within the Brazilian 'Baia Periforme' derived population, 'Alfa São Francisco', associating random field pairing of male-fertile plants with selected male-sterile plants and PCR-based marker system monitoring S, T and N-cytoplasms. Male-sterile plants produced flowers with light green anthers which were easily detected in the field. A frequency of 2.0% of male-sterile plants was estimated in the 'Alfa São Francisco' sampled population. Male-sterile plants produced the 5'cob-marker 180-bp and the orfA501-marker 473-bp fragments, suggesting the T-cytoplasm type, while the maintainer line produced only the 5'cob-marker 180-bp. These identified lines will be important to develop tropical onion hybrids well-adapted to Brazilian low latitudes and to future comparative studies with other onion cytoplasmic genic male sterility systems.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162010000200015	
Editor: 	São Paulo - Escola Superior de Agricultura "Luiz de Queiroz"	
Relação: 	10.1590/S0103-90162010000200015	
Formato: 	text/html	
Fonte: 	Scientia Agricola  v.67 n.2 2010	
Fonte: 	info:eu-repo/semantics/openAccess