| Registro completo |
| Provedor de dados: |
Genet. Mol. Biol.
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| País: |
Brazil
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| Título: |
Epistasis and genotype-by-environment interaction of grain protein content in durum wheat
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| Autores: |
Bnejdi,Fethi
Gazzah,Mohamed El
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| Data: |
2010-01-01
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| Ano: |
2010
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| Palavras-chave: |
Epistasis
Genotype x environment interaction
Heritability
Grain protein
Wheat
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| 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.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572010000100021
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| Editor: |
Sociedade Brasileira de Genética
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| Relação: |
10.1590/S1415-47572010000100021
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| Formato: |
text/html
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| Fonte: |
Genetics and Molecular Biology v.33 n.1 2010
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| Direitos: |
info:eu-repo/semantics/openAccess
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