maternal effect


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Related to maternal effect: Maternal inheritance

maternal effect

[mə′tərn·əl i‚fekt]
(genetics)
Determination of characters of the progeny by the maternal parent; mediated by the genetic constitution of the mother.
References in periodicals archive ?
In the estimation of variance components and the resulting genetic parameters of growth traits, it is necessary to consider the maternal effects rationally.
Six different single-trait linear models which accounts for the direct and maternal effects were initially fitted for each trait.
Initiation of maternal effects in Lymantria dispar--genetic and ecological components of egg provisioning.
Including maternal effects into the models (as in Model 8) is needed because the selection based on genetic evaluations requires accurate estimates of genetic and environmental parameters (Lee and Pollak, 1997a,b).
ariakensis male (SA) crosses was lower than that in the two intraspecific crosses and produced larvae that had similar growth rate as their maternal species during the first nine days because of maternal effects.
Maternal effects on seed germination and seedling size in field environments were estimated using an ANCOVA model, with habitat where seeds were planted as the main factor, and mother size, mother canopy openness and average seed mass as covariates.
1] hybrids (Figure 1), suggesting that there was no significant maternal effect on the copper concentration phenotype in the common bean seeds.
The objective of this study was, therefore, to estimate genetic components for wool traits using DFREML procedure with various combinations of direct and maternal effects in German Angora rabbit reared under sub-temperate Himalayan conditions.
The significant influences of environmental factors on body weight in the present study can be explained in part by differences in years (differences in environment, feeding and grazing resources), male and female endocrine system, limited uterine space, and inadequate availability of nutrients during pregnancy, competition for milk between the twins, maternal effects and maternal ability of dam at different ages (Rashidi et al.
The significant influences of environmental factors on growth traits in this study can be explained by differences between male and female in endocrine system (Sex effects), limited uterine space during pregnancy for single and multi birth kids, nutrition of dam specially during last pregnancy, competitions for milk suckling between the twins and triplet kids during birth to weaning (Type of birth effects), differences in maternal effects, nursing and maternal behavior of dam in different ages (Age of dam effects), differences in management, food availability, diseases, condition of climate and raising systems in different years (Year of birth effects), increase milk consumptions of kids with older ages or earlier born (Age of kids effects).

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