Data/hora: 05/06/2024 19:05:20

Provedor de dados: 	86	
País: 	Brazil	
Título: 	Validation of microsatellite markers for assisted selection of soybean resistance to cyst nematode races 3 and 14	
Autores: 	Silva,Marcia Flores da; Schuster,Ivan; Silva,João Flávio Veloso da; Ferreira,Adésio; Barros,Everaldo Gonçalves de; Moreira,Maurilio Alves.	
Data: 	2007-08-01	
Ano: 	2007	
Palavras-chave: 	Glycine max; Heterodera glycines; Soybean breeding; SCN; SSR; MAS.	
Resumo: 	The objective of this work was to validate microsatellite markers associated with resistance to soybean cyst nematode (Heterodera glycines Ichinohe) races 3 and 14, in soybean (Glycine max L.) genotypes, for use in marker-assisted selection (MAS) programs. Microsatellites of soybean linkage groups A2, D2 and G were tested in two populations, and their selection efficiencies were determined. The populations were 65 F2:3 families from Msoy8001 (resistant) x Conquista (susceptible) cross, and 66 F2:3 families of S5995 (resistant) x Renascença (susceptible) cross, evaluated for resistance to races 3 and 14, respectively. Families with female index up to 30% were considered moderately resistant. Markers of A2 and G linkage groups were associated with resistance to race 3. Markers Satt309 and GMENOD2B explained the greatest proportion of phenotypic variance in the different groups. The combinations Satt309+GMENOD2B and Satt309+Satt187 presented 100% selection efficiency. Resistance to race 14 was associated with markers of G linkage group, and selection efficiency in the Satt309+Satt356 combination was 100%. The selection differential obtained by phenotypic and marker assisted selection showed that both can result in similar gains.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2007000800011	
Editor: 	Embrapa Secretaria de Pesquisa e Desenvolvimento

Pesquisa Agropecuária Brasileira	
Relação: 	10.1590/S0100-204X2007000800011	
Formato: 	text/html	
Fonte: 	Pesquisa Agropecuária Brasileira  v.42 n.8 2007	
Fonte: 	info:eu-repo/semantics/openAccess