Data/hora: 13/06/2024 04:30:28

Provedor de dados: 	86	
País: 	Brazil	
Título: 	Detection and mapping of a lethal locus in a eucalyptus hybrid population	
Autores: 	Rosado,Tatiana Barbosa; Tomaz,Rafael Simões; Rocha,Rodrigo Barros; Rosado,Antônio Marcos; Alves,Alexandre Alonso; Araújo,Elza Fernandes de; Alfenas,Acelino Couto; Cruz,Cosme Damião.	
Data: 	2011-09-01	
Ano: 	2011	
Palavras-chave: 	Eucalyptus; Gametic selection; Genetic mapping; QTL; Rust resistance; Segregation distortion.	
Resumo: 	The objective of this work was to verify the existence of a lethal locus in a eucalyptus hybrid population, and to quantify the segregation distortion in the linkage group 3 of the Eucalyptus genome. A E. grandis x E. urophylla hybrid population, which segregates for rust resistance, was genotyped with 19 microsatellite markers belonging to linkage group 3 of the Eucalyptus genome. To quantify the segregation distortion, maximum likelihood (ML) models, specific to outbreeding populations, were used. These models consider the observed marker genotypes and the lethal locus viability as parameters. The ML solutions were obtained using the expectation‑maximization algorithm. A lethal locus in the linkage group 3 was verified and mapped, with high confidence, between the microssatellites EMBRA 189 e EMBRA 122. This lethal locus causes an intense gametic selection from the male side. Its map position is 25 cM from the locus which controls the rust resistance in this population.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2011000900008	
Editor: 	Embrapa Secretaria de Pesquisa e Desenvolvimento

Pesquisa Agropecuária Brasileira	
Relação: 	10.1590/S0100-204X2011000900008	
Formato: 	text/html	
Fonte: 	Pesquisa Agropecuária Brasileira  v.46 n.9 2011	
Fonte: 	info:eu-repo/semantics/openAccess