inbreeding depression


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Related to inbreeding depression: heterosis

inbreeding depression

[′in‚brēd·iŋ di‚presh·ən]
(genetics)
A decrease in fitness and vigor as a result of inbreeding.
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Evolution of the magnitude and timing of inbreeding depression in plants.
Therefore, a research project was planned to quantify the genetic potential, heritability, inbreeding depression and correlation of yield with various yield contributing traits in F3 populations and their parental genotypes of upland cotton.
Inbreeding depression was lower for fruit set than for seed set ([delta] = 0.
This suggests that the mass-selected populations are not currently experiencing inbreeding depression.
2005) also observed that Brix was the trait less affected by inbreeding depression.
If selfing were prominent, it would be expected that deleterious alleles would have been purged over time and these animals would be able to self with little to no inbreeding depression (Crnokrak and Barrett, 2002).
50 for GG(A) and GG(B), and GG(B) had slightly greater inbreeding depression than GG(A) (Table 4).
1999), our results provide some evidence of changes in body size that may be manifestations of inbreeding depression.
In plants, inbreeding depression has been demonstrated in many different life stages, ranging from seed production to adult reproduction and adult survival (for review see Charlesworth and Charlesworth 1987).
Genetic analyses suggest that recessive deleterious alleles, rather than overdominant genes, are the primary cause for inbreeding depression (Wright 1977; D.
Although inbreeding depression was not included in the simulated model, it should not be a problem to see the effect of the OGC algorithm in this study.
KEY WORDS: southern bay scallop, Argopecten irradians concentricus, self-fertilized families, production traits, inbreeding depression