Home Itens selecionados Provedores de dados OAI Créditos Sobre Ajuda

			Busca avançada
	Provedor de dados Genet. Mol. Biol. (3) Autor Bnejdi,Fethi (3) El Gazzah,Mohamed (2) Allagui,Mohamed Bechir (1) Gazzah,Mohamed El (1) Hanbury,Colin (1) Naouari,Mouna (1) Saadoun,Morad (1) Saadoun,Mourad (1) Mais... Palavra-chave Adaptability (1) Additive model (1) Best fit model (1) Epistasis (1) Gene effect (1) Genotype x environment interaction (1) Grain protein (1) Heredity (1) Heritability (1) Inheritance (1) Leaf stage (1) Stagonospora nodorum blotch (1) Wheat (1) Mais... Tipo do documento Info:eu-repo/semantics/article (3) Ano 2012 (1) 2010 (2) País Brazil (3) Idioma Inglês (3)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última Relationship between epistasis and aggressiveness in resistance of pepper (Capsicum annuum L.) to Phytophthora nicotianae Genet. Mol. Biol. Bnejdi,Fethi; Saadoun,Morad; Allagui,Mohamed Bechir; Hanbury,Colin; El Gazzah,Mohamed. This study evaluated the types of gene action governing the inheritance of resistance to Phytophthora nicotianae necrosis in populations derived from two crosses involving two susceptible (Beldi and Nabeul II) and one resistant (CM334) cultivars of pepper (Capsicum annuum L.). Populations, composed of Pr, Ps, F1,F2,BC1Pr, and BC1Ps generations, were inoculated with six P. nicotianae isolates. Generation means analysis indicated that an additive-dominance model was appropriate for P. nicotianae isolates PnKo1,PnKo2 and PnKr1, which showed low aggressiveness in the two crosses. For the more aggressive isolates PnBz1,PnBz2 and PnKr2, epistasis was an integral component of resistance in the two crosses. The presence of epistasis in the resistance of pepper to... Tipo: Info:eu-repo/semantics/article Palavras-chave: Additive model; Best fit model; Gene effect; Heredity. Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572010000200014 Epistasis and genotype-by-environment interaction of grain protein content in durum wheat Genet. Mol. Biol. Bnejdi,Fethi; Gazzah,Mohamed El. 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.... Tipo: Info:eu-repo/semantics/article Palavras-chave: Epistasis; Genotype x environment interaction; Heritability; Grain protein; Wheat. Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572010000100021 Relationship between leaf stages and epistasis for resistance to Stagonospora nodorum in durum wheat Genet. Mol. Biol. Bnejdi,Fethi; Saadoun,Mourad; Naouari,Mouna; El Gazzah,Mohamed. Ten varieties and eight generations (2F1, 2F2, 2B1 and 2B2) of durum wheat derived from two crosses were evaluated for resistance to natural infection by Stagonospora nodorum blotch (SNB) at the 2-3 and 6-7 leaf stages at two sites over two years. There were significant differences in the incidence of SNB between leaf stages in most of the wheat varieties, with resistance being most evident at the 6-7 leaf stage. Separate analyses of the mean values for each generation showed that the genetic mechanism of defense against the pathogen depended upon the leaf stage. At the 2-3 leaf stage, only additive and dominance effects were implicated in the control of SNB for the two crosses at the two sites and for the two replications. For the 6-7 leaf stage,... Tipo: Info:eu-repo/semantics/article Palavras-chave: Adaptability; Inheritance; Leaf stage; Stagonospora nodorum blotch. Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572012000300010 Registros recuperados: 3 Primeira ... 1 ... Última

Empresa Brasileira de Pesquisa Agropecuária - Embrapa Todos os direitos reservados, conforme Lei n° 9.610 Política de Privacidade Área restrita		Embrapa Parque Estação Biológica - PqEB s/n° Brasília, DF - Brasil - CEP 70770-901 Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco