Table 5 Comparison of the proposed approach implemented in MultiPoint-UDM (MUDM) software with MST on a simulated double haploid population (of size 200 with 2000 markers per chromosome)
ms%010
pe0.0010.0050.010.0010.0050.01
MSTLcM180294750186408691
Bins146291708177513862
MUDMLcM134134137131135132
Nsk817558758664
nr13162014
lf %4.814.332.117.921.440.5
  • pe, level of genotyping errors per marker; ms, simulated rate of missing data per marker; LcM, map length (in centimorgans) of a chromosome or LG; lf (%), loss factor, which represents the percentage of lost (noncharacterized) map unique positions in the constructed skeletal map compared to the simulated map; it is calculated as lf = 100 [Nskef − (Nsknr)]/Nskef, = 100 (NskefNsk + nr)/Nskef, where Nskef is the number of intervals in the map built for the simulated error-free data, while Nsk and (Nsknr) are the number of noisy markers in the skeletal map, noncorrected and corrected for the number of repeats, respectively; nr, the number of “repeats” resulting from fission of the initial groups of cosegregating markers into subgroups due to genotyping errors and missing marker scores; such repeats will appear in the constructed map at separate (usually, but not necessarily, adjacent) positions.