TABLE 1

QTL genotypes and genotypic values of populations and data sets

Population and data setaIncreasing allele contributed byDH genotypebGenotype of the population/data setGenotypic valuecQTL effectd [(QEQE− qRqR)/2 or (qEqE− QRQR)/2]
DHExpressQEQEQEQEMPV + a2a/2 = a
qRqRqRqRMPV − a
R53qEqEqEqEMPV − a−(2a)/2 = −a
QRQRQRQRMPV + a
TCExpressQEQEQEQEMPV + a(ad)/2
qRqRQEqRMPV + d
R53qEqEqEqEMPV − a−(a + d)/2
QRQRqEQRMPV + d
MPHExpressQEQEEmbedded Image(0 – d)/2 = −d/2
qRqREmbedded Image
R53qEqEEmbedded Image(0 – d)/2 = −d/2
QRQREmbedded Image
  • a Doubled-haploid (DH) and testcross (TC) populations and midparent heterosis (MPH) data set.

  • b QE/qE, QTL allele of “Express”; QR/qR, QTL allele of “R53”; Q and q, an allele increasing and decreasing the trait, respectively.

  • c MPV, mean of the two EE and rr or ee and RR homozygotes; a, additive effect; d, dominance effect.

  • d QTL effect as calculated by QTLMapper.