Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Ordenar por: 

RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 5
Primeira ... 1 ... Última
Imagem não selecionada

Imprime registro no formato completo
Maternal effects on the genetic evaluation of Tabapuã beef cattle Genet. Mol. Biol.
Campêlo,José Elivalto Guimarães; Lopes,Paulo Sávio; Torres,Robledo de Almeida; Silva,Luiz Otávio Campos da; Euclydes,Ricardo Frederico; Araújo,Cláudio Vieira de; Pereira,Carmen Silva.
The aim of this investigation was to study the influence of maternal effects on the genetic evaluation of sire production in Tabapuã beef cattle. Single and multiple trait analyses were done with adjusted animal weights at 120, 240 and 420 days of age. Antagonism was observed between additive direct and maternal genetic effects, with the maternal effect being higher until weaning. The inclusion of maternal effects in the models removed part of the additive variance only in single trait analyses and resulted in smaller means and standard deviations for the sire breeding values. The use of maternal effect associated with single or multiple traits may affect sire ranking. The contradictory results of the single and multiple trait analyses for additive direct...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Additive direct effects; Beef cattle; Genetic parameters; Growth; Maternal effects.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572004000400009
Imagem não selecionada

Imprime registro no formato completo
Offspring development and life-history variation in a water flea depends upon clone-specific integration of genetic, non-genetic and environmental cues ArchiMer
Harney, Ewan; Paterson, Steve; Plaistow, Stewart J..
Theory predicts that offspring developmental strategies involve the integration of genetic, non-genetic and environmental ‘cues’. But it is unclear how cue integration is achieved during development, and whether this pattern is general or genotype-specific. In order to test this, we manipulated the maternal and offspring environments of three genetically distinct clones of the water flea Daphnia magna taken from different populations. We then quantified the effect that the genotype, maternal environment and the offspring environment had on the development and life-histories of the three different clones. Mothers responded to the same maternal environments in different ways, resulting in clone-specific maternal effects on neonate size. Offspring responses...
Tipo: Text Palavras-chave: Cue integration; Developmental plasticity; Maternal effects; Non-genetic inheritance; Probabilistic maturation reaction norm; Water flea.
Ano: 2017 URL: https://archimer.ifremer.fr/doc/00382/49370/49773.pdf
Imagem não selecionada

Imprime registro no formato completo
Parent-to-offspring transfer of sublethal effects of copper exposure: Metabolic rate and life-history traits of Daphnia RChHN
FERNÁNDEZ-GONZÁLEZ,MAURICIO A; GONZÁLEZ-BARRIENTOS,JAVIER; CARTER,MAURICIO J; RAMOS-JILIBERTO,RODRIGO.
In ecological communities, pollution driven perturbations exert immediate effects on sensitive individuals, but these effects may be transmitted among interacting organisms and spread over the community through several paths. This makes the assessment and prediction of ecological consequences of pollution difficult. The propagation of perturbation effects among organisms can be horizontal among organisms that coexist in space and time, and vertical among organism that belong to different generations. The latter process is poorly understood, in particular in planktonic organisms facing metal pollution. In this study we evaluate the vertical transfer of effects driven by sublethal copper stress on the heartbeat rate, somatic growth and fertility of Daphnia...
Tipo: Journal article Palavras-chave: Ecotoxicology; Heartbeat rate; Maternal effects; Transgenerational effects; Zooplankton.
Ano: 2011 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2011000200005
Imagem não selecionada

Imprime registro no formato completo
Heterosis and combining ability of seed physiological quality traits of single cross vs. three-way sorghum hybrids Agronomy
Galicia-Juárez, Marisol; Mendoza-Onofre, Leopoldo Ernesto; González-Hernández, Víctor Arturo; Cisneros-López, María Eugenia; Benítez-Riquelme, Ignacio; Córdova-Téllez, Leobigildo.
The aim of this research was to compare genetic parameters for traits related with seed germination and seedling vigour of single cross (SCH) vs. three-way (TWH) sorghum hybrids. The study was conducted in a sand bed under a greenhouse; 67 genotypes (four pairs of A- and B- lines, four R- lines, 13 SCH and 42 TWH) were allocated in a randomized complete blocks experimental design with three replications. Statistical analysis included ANOVA’s and Student “t” tests, while Tukey test (p £ 0.05) was applied for mean comparisons. The R-lines showed better physiological seed quality attributes than the A- and B- lines. The seed quality and heterosis values of SCH vs. that of TWH did not show significant differences (p > 0.05) for any variable; however,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Sorghum bicolor L. Moench; Maternal effects; Seedling emergence; Sorghum lines; Top-cross tests..
Ano: 2017 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/31198
Imagem não selecionada

Imprime registro no formato completo
Estimates of (co)variance components and genetic parameters for growth traits in Suffolk lambs Ciência Rural
Tamioso,Priscilla Regina; Alberti Filho,Jaime Luiz; Dias,Laila Talarico; Teixeira,Rodrigo de Almeida.
The study aimed to estimate the components of (co)variance and heritability for weights at birth (BW), weaning (WW) and 180 days of age (W180), as well as the average daily gains from birth to weaning (ADG1), birth to 180 days of age (ADG2) and weaning to 180 days of age (ADG3) in Suffolk sheep. Thus, three different single-trait animal models were fitted, considering the direct additive genetic effect (Model 1), the direct additive genetic and maternal permanent environmental effects (Model 2), and in Model 3, in addition to those in Model 2, the maternal additive genetic effect was included. After comparing models through the likelihood ratio test (LRT), model 3 was chosen as the most appropriate to estimate heritability for BW, WW and ADG1. Model 2 was...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Average daily weight gain; Body weight; Heritability; Maternal effects; Suffolk.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782013001200016
Registros recuperados: 5
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

Valid HTML 4.01 Transitional