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Provedor de dados:  Genet. Mol. Biol.
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
Grain protein
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
Editor:  Sociedade Brasileira de Genética
Relação:  10.1590/S1415-47572010000100021
Formato:  text/html
Fonte:  Genetics and Molecular Biology v.33 n.1 2010
Direitos:  info:eu-repo/semantics/openAccess

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