TABLE 2

Relative efficiency of MAS

Analytical resultsaSimulated results
h2m2(r)dPercent aSelection bias not includedSelection bias includedAverage value over 100 simulationsbStandard error of the averagec
0.150.3 (0.226)51.2381.0031.0330.039
201.3930.9950.9890.036
0.5 (0.146)51.5481.3471.4340.045
201.7441.3681.4270.078
0.7 (0.082)51.8901.7131.7290.050
202.0771.7201.7760.060
0.9 (0.053)52.2292.0732.1650.078
202.3852.0512.1000.063
0.30.3 (0.226)51.1551.0771.1080.020
201.2051.0551.0530.017
0.5 (0.146)51.3431.2711.2960.025
201.3841.2361.2440.020
0.7 (0.082)51.5361.4641.4360.025
201.5591.4071.4180.024
0.9 (0.053)51.7241.6541.6630.026
201.7341.5851.6180.026
0.450.3 (0.226)51.0891.0601.0460.010
201.1041.0441.0340.010
0.5 (0.146)51.1891.1561.1650.011
201.1961.1271.1160.012
0.7 (0.082)51.2971.2581.2590.014
201.2991.2181.2010.015
0.9 (0.053)51.4201.3741.3630.015
201.4201.3261.3210.015
  • Comparison of the RE of MAS obtained from aexpectations based on an analytical approach (bias caused by the selection of the markers in the index taken into account or not), and b from the average relative efficiency over 100 simulations.

  • c The standard error of the average value was used to determine a confidence interval at the 5% significance level and to test the adequacy between calculations and simulations. The size of the population is 300 and there are five QTLs of equal effects.

  • h2, heritability of the trait; m2, percentage of genetic variance associated with markers; a, type I level risk.

  • d r indicates the corresponding rate of recombination between marker and QTL.