Summary
The effect of gene association (or dispersion) and linkage on the estimation of genetic variances in a diallel experiment involving doubled haploid lines is evaluated. It is shown that the estimates of the additive and the additive X additive genetic variances, as obtained by Choo et al. (1979), are biased if genes are linked or are not independently distributed in the parents. However, this bias only occurs in the presence of interaction between homozygous loci. Gene association (or dispersion) and linkage, if present, can be detected by comparing the parental vs the crosses mean, the parental vs the doubled haploid lines variance, and the among vs the within crosses variance.
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Literature
Baker, R.J.: Issues in diallel analysis. Crop Sci. 18, 533–536 (1978)
Brim, C.A.: A modified pedigree method of selection in soybeans. Crop Sci. 6, 220(1966)
Choo, T.M.; Christie, B.R.; Reinbergs, E.: Doubled haploids for estimating genetic variances and a scheme for population improvement in self-pollinating crops. Theor. Appl. Genet. 6, 267–271 (1979)
Coughtrey, A.; Mather, K.: Interaction and gene association and dispersion in diallel crosses where gene frequencies are unequal. Heredity 25, 79–88 (1970)
Jensen, C.J.: Barley monoploids and doubled monoploids: Techniques and experience. In: Barley Genetics III (ed. Gaul, H.) pp. 316–345. München: K. Thiemig 1975
Kasha, K.J.; Kao, K.N.: High frequency haploid production in barley. Nature 225, 874–876 (1970)
Kasha, K.J.; Reinbergs, E.: Utilization of haploidy in barley. In: Barley Genetics III (ed. Gaul, H.). München: K. Thiemig 1975
Mather, K.; Jinks, J.L.: Biometrical genetics. Ithaca, N.Y.: Cornell Univ. Press 1971
Park, S.J.; Walsh, E.J.; Reinbergs, E.; Song, L.S.P.; Kasha, K.J.: Field performance of doubled haploid barley lines in comparison with lines developed by the pedigree and single seed descent methods. Can. J. Plant Sci. 56, 467–474 (1976)
Reinbergs, E.; Park, S.J.; Song, L.S.P.: Early identification of superior barley crosses by doubled haploid technique. Z. Pflanzenzüchtg. 76, 215–225 (1976)
Song, L.S.P.; Park, S.J.; Reinbergs, E.; Choo, T.M.; Kasha, K.J.: Doubled haploid vs the bulk plot method for production of homozygous lines in barley. Z. Pflanzenzüchtg. 81, 271–280 (1978)
Subrahmanyam, N.C.; Kasha, K.J.: Chromosome doubling of barley haploids by nitrous oxide and calchicine treatments. Can. J. Genet. Cytol. 17, 573–583 (1975)
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Communicated by R.W. Allard
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Choo, T.M., Reinbergs, E. Doubled haploids for estimating genetic variances in presence of linkage and gene association. Theoret. Appl. Genetics 55, 129–132 (1979). https://doi.org/10.1007/BF00295438
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DOI: https://doi.org/10.1007/BF00295438