Summary
Three methods of estimating the numbers of genes segregating for quantitative characters using doubled haploid lines are presented. The first uses estimates of the range and genetical variance of an F1 or F2 derived population. The second adapts the genotype assay method of Jinks and Towey (1976) to F2 derived lines. The third uses the variances of an F2 derived population. Statistical problems of obtaining meaningful estimates using these methods are discussed and it is concluded that genotype assay is the best method for distinguishing between few and many genes. These methods are illustrated using data from an experiment containing doubled haploid lines of barley developed using the H. bulbosum system.
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Choo TM, Reinbergs E (1982) Estimation of the number of genes in doubled haploid populations of barley (Hordeum vulgare). Can J Genet Cytol 24:337–341
Jinks JL, Towey P (1976) Estimating the number of genes in a polygenic system by genotype assay. Heredity 37:69–81
Mather K (1967) Complementary and duplicate gene interactions in biometrical genetics. Heredity 22:97–103
Mather K (1973) Genetical structure of populations. Chapman and Hall, London
Mather K, Jinks JL (1982) Biometrical genetics, 3rd edn. Chapman and Hall, London
Nitzsche W, Wenzel G (1977) Haploids in plant breeding. Paul Parey, Berlin Hamburg
Snape JW (1982) The use of doubled haploids in plant breeding. In: Induced variability in plant breeding. Centre for Agricultural Publishing and Documentation, Wageningen, pp 52–58
Snape JW, Simpson E (1981) The genetical expectations of doubled haploid lines derived from different filial generations. Theor Appl Genet 60:123–128
Snape JW, Simpson E (1982) The use of doubled haploid lines for genetical analysis in barley. In: Barley genetics, vol IV. Proc 4th Int Barley Genet Symp. Chapman and Hall, London, pp 704–709
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Communicated by A. Robertson
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Snape, J.W., Wright, A.J. & Simpson, E. Methods for estimating gene numbers for quantitative characters using doubled haploid lines. Theoret Appl Genet 67, 143–148 (1984). https://doi.org/10.1007/BF00317020
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DOI: https://doi.org/10.1007/BF00317020