International Journal of Plant Genomics / 2010 / Article / Tab 2

Methodology Report

EM Algorithm for Mapping Quantitative Trait Loci in Multivalent Tetraploids

Table 2

Maximum likelihood estimates of the double reduction, recombination fraction, overall mean, additive effects, and dominant effects under different simulation scenarios in a mapping population of size 200. Numbers in parentheses are the standard errors of the estimates.

True valueμ
10.60.60.60.50.50.50.50.50.5

0.30.250.10.3020.3131.1810.3970.2180.1262.3032.553−1.6492.272−1.471−1.268
(0.031)(0.093)(1.207)(1.708)(1.697)(1.443)(2.844)(3.144)(3.576)(3.048)(3.454)(3.526)
0.30.250.40.3010.2341.0910.5820.5530.6770.4930.3170.3400.6460.4590.262
(0.034)(0.085)(0.508)(0.781)(0.730)(0.727)(1.432)(1.402)(1.438)(1.416)(1.435)(1.362)
0.30.050.10.3020.0931.0130.5450.5510.6600.7390.7030.2060.9240.1140.089
(0.032)(0.093)(0.483)(0.789)(0.829)(0.753)(1.432)(1.561)(1.309)(1.355)(1.453)(1.486)
0.30.050.40.2970.0470.9990.5960.5850.5740.5220.5310.4640.5090.4200.530
(0.032)(0.037)(0.190)(0.362)(0.346)(0.342)(0.570)(0.645)(0.666)(0.611)(0.577)(0.569)

0.150.250.10.1520.2771.0250.6920.5630.5870.9530.968−0.2321.224−0.034−0.033
(0.028)(0.117)(0.718)(1.168)(1.225)(1.215)(1.866)(1.930)(1.862)(1.900)(1.780)(1.692)
0.150.250.40.1470.2340.9820.5810.6750.5800.4200.5510.5610.3860.4840.617
(0.024)(0.078)(0.287)(0.520)(0.471)(0.530)(0.838)(0.724)(0.775)(0.822)(0.745)(0.736)
0.150.050.10.1490.1400.9710.4750.5480.7231.2320.9850.2460.8630.048−0.325
(0.024)(0.106)(0.633)(1.251)(1.257)(1.479)(1.814)(1.719)(1.990)(1.968)(1.868)(1.824)
0.150.050.40.1490.0551.0260.6910.5730.5580.3940.3800.4780.5360.4850.523
(0.026)(0.047)(0.299)(0.558)(0.511)(0.585)(0.684)(0.799)(0.800)(0.862)(0.754)(0.745)

0.050.250.10.0490.3261.0740.7500.3250.5571.2351.190−0.4201.392−0.127−0.331
(0.015)(0.143)(1.209)(2.486)(2.232)(1.868)(2.857)(2.619)(3.332)(3.113)(3.023)(2.775)
0.050.250.40.0480.2410.9320.6190.3450.5280.8850.6580.2340.8790.4980.242
(0.013)(0.075)(0.499)(1.038)(1.037)(0.932)(1.365)(1.305)(1.282)(1.317)(1.190)(1.276)
0.050.050.10.0500.1960.9140.4900.2940.6121.7551.435−0.4871.713−0.146−0.379
(0.015)(0.127)(1.209)(1.941)(2.134)(2.157)(2.902)(2.792)(2.747)(2.872)(2.758)(2.855)
0.050.050.40.0490.0590.8180.6090.3510.6970.9520.6460.5480.9080.7370.412
(0.017)(0.049)(0.541)(0.978)(0.988)(0.967)(1.130)(1.527)(1.419)(1.285)(1.279)(1.001)

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