Data/hora: 04/06/2024 04:04:20

Provedor de dados: 	74	
País: 	Brazil	
Título: 	Epistasis and genotype-by-environment interaction of grain protein content in durum wheat	
Autores: 	Bnejdi,Fethi; Gazzah,Mohamed El.	
Data: 	2010-01-01	
Ano: 	2010	
Palavras-chave: 	Epistasis; Genotype x environment interaction; Heritability; Grain protein; Wheat.	
Resumo: 	Parental, F1, F2, BC1 and BC2 generations of four crosses involving four cultivars of durum wheat (Triticum durum Desf.) were evaluated at two sites in Tunisia. A three-parameter model was found inadequate for all cases except crosses Chili x Cocorit 71 at site Sidi Thabet and Inrat 69 x Karim at both sites. In most cases a digenic epistatic model was sufficient to explain variation in generation means. Dominance effects (h) and additive x additive epistasis (i) (when significant) were more important than additive (d) effects and other epistatic components. Considering the genotype-by-environment interaction, the non-interactive model (m, d, h, e) was found adequate. Additive variance was higher than environmental variance in three crosses at both sites. The estimated values of narrow-sense heritability were dependent upon the cross and the sites and were 0%-85%. The results indicate that appropriate choice of environment and selection in later generations would increase grain protein content in durum wheat.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572010000100021	
Editor: 	Sociedade Brasileira de Genética	
Relação: 	10.1590/S1415-47572010000100021	
Formato: 	text/html	
Fonte: 	Genetics and Molecular Biology  v.33 n.1 2010	
Fonte: 	info:eu-repo/semantics/openAccess