Abstract
The effects of linkage on the additive genetical variation among inbred lines produced by single seed descent (SSD) from an F2 is investigated numerically with five and ten gene models. Although considerable bias can be generated by linkage, the additive genetical variation present after one round of random mating is shown to approximate closely to that among the SSD lines over a wide range of gene distributions and would thus be a reliable estimator for breeding purposes. Simple experimental methods of estimating this variance are discussed.
Similar content being viewed by others
Article PDF
References
Comstock, R E, and Robinson, H F. 1952. Estimation of average dominance of genes. In Gowen, J. W. (ed.) Heterosis Iowa State College Press, Ames, Iowa. pp. 494–516.
Jinks, J L, and Perkins, J M. 1972. Predicting the range of inbred lines. Heredity, 28, 399–403.
Jinks, J L, and Pooni, H S. 1976. Predicting the properties of recombinant inbred lines derived by single seed descent. Heredity, 36, 253–266.
Jinks, J L, and Pooni, H S. 1981. Properties of pure breeding lines produced by dihaploidy, single seed descent and pedigree breeding. Heredity, 46, 391–395.
Jinks, J L, and Pooni, H S. 1982. Predicting the properties of pure breeding lines extractable from a cross in the presence of linkage. Heredity, 49, 265–270.
Kearsey, M J, and Jinks, J L. 1968. A general method of detecting additive dominance and epistatic variation for a metrical trait. I. Theory. Heredity, 23, 403–409.
Mather, K, and Jinks, J L. 1982. Biometrical Genetics (3rd Edn). Chapman and Hall, London.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Kearsey, M. The effect of linkage on additive genetic variance with inbreeding an F2. Heredity 55, 139–143 (1985). https://doi.org/10.1038/hdy.1985.81
Received:
Issue date:
DOI: https://doi.org/10.1038/hdy.1985.81
This article is cited by
-
Correlated response to selection during selfing
Heredity (1994)
-
Estimation of additive genotypic variance with the F3 of autogamous crops
Heredity (1989)
-
The predictive value of quantitative genetic parameters in autogamous crops: Bias caused by intergenotypic competition. 2. F∞-variance
Euphytica (1989)
-
Expectation of means and variances of testcrosses produced from from F2 and backcross individuals and their selfed progenies
Heredity (1987)
-
Estimation of the true additive genetic variance ∑ i = 1 k d i 2 in the presence of linkage disequilibrium
Heredity (1986)
