TABLE 2

Power to detect QTL (α* = 0.01) and the corresponding standard error for different numbers N of maize recombinant inbred lines derived from different mating designs: reference (REF), diallel (DIA), factorial (FCT), single round-robin (SRR), double round-robin (DRR), reduced round-robin (RRR), independent round-robin (IRR), and distance-based (DB) designs

Mating design25 QTL50 QTL100 QTL
h2 = 0.5h2 = 0.8h2 = 0.5h2 = 0.8h2 = 0.5h2 = 0.8
N = 1250
REF0.603 (0.0090)0.961 (0.0037)0.459 (0.0078)0.934 (0.0042)0.189 (0.0060)0.888 (0.0047)
DIA0.694 (0.0079)0.981 (0.0028)0.590 (0.0058)0.979 (0.0024)0.381 (0.0085)0.978 (0.0014)
FCT0.706 (0.0083)0.986 (0.0023)0.591 (0.0072)0.978 (0.0021)0.376 (0.0078)0.978 (0.0016)
SRR0.678 (0.0082)0.986 (0.0023)0.574 (0.0071)0.977 (0.0021)0.348 (0.0079)0.976 (0.0019)
DRR0.692 (0.0073)0.982 (0.0028)0.585 (0.0068)0.976 (0.0022)0.373 (0.0082)0.979 (0.0016)
RRR0.677 (0.0080)0.982 (0.0030)0.553 (0.0072)0.972 (0.0028)0.328 (0.0076)0.967 (0.0042)
IRR0.661 (0.0086)0.978 (0.0033)0.535 (0.0071)0.965 (0.0030)0.302 (0.0078)0.970 (0.0018)
DB150.658 (0.0076)0.973 (0.003)0.529 (0.0075)0.968 (0.0026)0.284 (0.0073)0.954 (0.0025)
DB300.692 (0.0077)0.983 (0.0024)0.559 (0.0067)0.973 (0.0023)0.330 (0.0067)0.972 (0.0017)
DB600.686 (0.0084)0.985 (0.0025)0.589 (0.0061)0.977 (0.0023)0.352 (0.0084)0.979 (0.0015)
N = 2500
REF0.734 (0.0072)0.986 (0.0024)0.600 (0.0073)0.977 (0.0021)0.317 (0.0072)0.968 (0.0021)
DIA0.816 (0.0073)0.992 (0.0018)0.753 (0.0059)0.993 (0.0013)0.639 (0.0079)0.992 (0.0010)
FCT0.799 (0.0067)0.993 (0.0015)0.737 (0.0062)0.992 (0.0013)0.631 (0.0084)0.992 (0.0008)
SRR0.790 (0.0080)0.994 (0.0015)0.734 (0.0071)0.993 (0.0014)0.596 (0.0084)0.993 (0.0007)
DRR0.808 (0.0068)0.994 (0.0014)0.756 (0.0063)0.991 (0.0015)0.636 (0.0079)0.993 (0.0008)
RRR0.796 (0.0076)0.992 (0.0017)0.718 (0.0059)0.987 (0.0018)0.600 (0.0082)0.992 (0.0010)
IRR0.768 (0.0078)0.991 (0.0019)0.698 (0.0064)0.991 (0.0014)0.546 (0.0100)0.991 (0.0010)
DB150.773 (0.0078)0.992 (0.0017)0.686 (0.0066)0.986 (0.0017)0.482 (0.0091)0.986 (0.0011)
DB300.805 (0.0064)0.992 (0.0017)0.720 (0.0064)0.989 (0.0012)0.563 (0.0093)0.987 (0.0011)
DB600.810 (0.0067)0.996 (0.0014)0.749 (0.0060)0.994 (0.0011)0.626 (0.0079)0.993 (0.0008)
N = 5000
REF0.829 (0.0079)0.992 (0.0017)0.754 (0.0074)0.993 (0.0013)0.515 (0.0090)0.991 (0.0010)
DIA0.910 (0.0064)0.997 (0.0010)0.883 (0.0052)0.998 (0.0005)0.866 (0.0051)0.997 (0.0006)
FCT0.900 (0.0060)0.997 (0.0010)0.871 (0.0049)0.997 (0.0008)0.858 (0.0053)0.998 (0.0005)
SRR0.901 (0.0061)0.997 (0.0010)0.866 (0.0048)0.997 (0.0007)0.842 (0.0065)0.998 (0.0006)
DRR0.918 (0.0044)0.998 (0.0009)0.872 (0.0045)0.998 (0.0008)0.844 (0.0057)0.997 (0.0005)
RRR0.890 (0.0066)0.996 (0.0013)0.857 (0.0057)0.996 (0.0008)0.816 (0.0073)0.996 (0.0006)
IRR0.889 (0.0066)0.996 (0.0013)0.836 (0.0059)0.996 (0.0010)0.772 (0.0076)0.996 (0.0006)
DB150.886 (0.0065)0.995 (0.0013)0.827 (0.0059)0.994 (0.0011)0.753 (0.0073)0.994 (0.0007)
DB300.897 (0.0050)0.997 (0.0012)0.851 (0.0056)0.994 (0.0012)0.792 (0.0071)0.997 (0.0005)
DB600.909 (0.0052)0.997 (0.0011)0.878 (0.0054)0.997 (0.0008)0.848 (0.0058)0.997 (0.0005)