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 ?
Analysis of variance of the specific combination ability (SCA), reciprocal effect (REC), maternal effect (MAT), and non-maternal effect (NMAT) for the traits, popping expansion and grain yield of diallel popcorn populations.
The presence of antagonistic genetic relationships, to a varying magnitude, between direct and maternal effects (rGDM) for calving ease was generally reported by others as well.
Maternal effects as adaptations for transgenerational phenotypic plasticity in Insects.
Although the maternal environment can modify the expression of the maternal phenotype altering its subsequent impact on a trait in the offspring, the evolutionary response hinges on the genetic basis of maternal effects. The genetic basis of maternal effects can be divided into two categories: (1) heritability of maternal traits such as maternal size, condition, or provisioning ability; and (2) genetic correlations between these maternal traits and traits expressed in the juvenile stages such as birth weight or offspring size.
The maternal permanent environmental effect was significant for birth weight and ignoring maternal effects in the model caused the over estimation of direct heritability.
There is increasing evidence of temperature-induced maternal effects on offspring size and performance in a wide variety of taxa, mostly based on correlations between the environmental temperatures where mothers live and the size of eggs they produce (Blanckenhorn, 2000; Fischer et al., 2003a, b; Angilletta et al, 2006; Bownds et al., 2010; Liefting et ai, 2010; Burgess and Marshall, 2011; Lorioux et al., 2012; Sun and Niu, 2012).
Because of the important role of pericarp, which is maternal tissue, in protecting the maize kernel from weevil attack (Serratos et al., 1993), we expected lines with best GCA to also have favorable maternal effect for weevil resistance parameters.
This result indicates the absence of a maternal effect and that the seeds of the [F.sub.1] generation represent fertilization between the parents in both hybrid combinations.
The particular maternal effect of propagule size, especially egg size: Patterns models, quality of evidence and interpretations.

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