TABLE 1

Mean and standard deviation of the maximum-likelihood estimates of recombination frequency and the coefficient of double reduction from 100 replicates of simulation of a full-sib population of 200 autotetraploid individuals

LocusG1G2rαEmbedded ImageEmbedded ImageEmbedded ImageEmbedded ImageEmbedded Image
L1CABBDCEO0.000.05000.0504 ± 0.02100.0498 ± 0.01970.98
L2CABABCCA0.100.09980.1024 ± 0.02110.0955 ± 0.04100.0978 ± 0.03401.000.95
L3BCAEACAB0.100.13720.1036 ± 0.03370.1369 ± 0.03650.1386 ± 0.02471.001.00
L4OBCAAABD0.050.15170.0517 ± 0.01680.1625 ± 0.04280.1539 ± 0.02911.001.00
L5AAAOCDCC0.100.17620.0934 ± 0.04420.1767 ± 0.03550.1786 ± 0.03001.001.00
L6DOAEABAB0.050.18570.0560 ± 0.03170.1828 ± 0.04260.1878 ± 0.03561.001.00
L7BOAADABB0.100.20170.0969 ± 0.03390.1994 ± 0.04850.1981 ± 0.03481.001.00
L8BBDBABAD0.050.20790.0539 ± 0.03350.2045 ± 0.03770.2024 ± 0.03071.001.00
L9DDBEBBAD0.100.21840.1021 ± 0.03950.2127 ± 0.03190.2136 ± 0.03071.001.00
L10AEDEDACA0.050.22250.0511 ± 0.01440.2150 ± 0.02900.2182 ± 0.02761.001.00
  • G1 and G2 are simulated parental genotypes at the 10 marker loci, r and α are the simulated values of recombination frequency between adjacent loci and the coefficient of double reduction. Embedded Image is the estimate of double-reduction coefficient obtained by the single-locus method and Embedded Image is the estimate of double-reduction coefficient obtained by the two-locus method. Embedded Image and Embedded Image represent the empirical statistical power for testing significance of genetic linkage and double reduction.