TABLE 1

Estimated percentage of phenotypic variance associated with markers

Analytical resultsaSimulated results
h2m2(r)dPercent αSelection bias not includedSelection bias includedAverage value over 100 simulationsbStandard error of the averagec
0.150.3 (0.226)50.0170.0590.0590.003
200.0290.0850.0870.004
0.5 (0.146)50.0430.0880.0820.004
200.0600.1130.1140.004
0.7 (0.082)50.0750.1190.1180.004
200.0940.1430.1420.004
0.9 (0.053)50.1110.1500.1530.006
200.1280.1730.1680.005
0.30.3 (0.226)50.0580.1030.1000.004
200.0770.1280.1320.005
0.5 (0.146)50.1290.1660.1650.005
200.1440.1870.1800.005
0.7 (0.082)50.2000.2280.2180.006
200.2070.2480.2440.006
0.9 (0.053)50.2650.2880.2800.005
200.2690.3080.3020.005
0.450.3 (0.226)50.1110.1500.1480.005
200.1280.1730.1790.005
0.5 (0.146)50.2170.2430.2420.005
200.2230.2630.2660.005
0.7 (0.082)50.3130.3340.3370.007
200.3150.3530.3580.005
0.9 (0.053)50.4050.4240.4310.006
200.4050.4430.4530.006
  • Comparison of the estimated percentage of phenotypic variance associated with markers obtained afrom expectations 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 estimated value over 100 simulations.

  • c The standard error of the average value obtained by simulation was used to determine a confidence interval at the significant level of 5% 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; α, type I level risk.

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