TABLE 1

Comparison of QTL mapping studies with genotypes observed in parental lines

StudyaCrossTraitdQTL at Vgt1 locusR2(%)eLODeAdditive effect (days)e/late parentmitefCGindel587f
Vladutu et al. (1999)bN28 × E20DPSDetectedNA∼152.82/N28+/−+/−
Barriere et al. (2005)F838 × F286SDDetected28.817.82.3/F838+/−+/−
Beavis et al. (1994)B73 × Mo17DPSDetected3111.2NA/B73+/−+/−
Blanc et al. (2006)DE × F283 × F9005 × F810SDDetected5NA0.4/F9005−/−/−/−−/−/−/−
Austin and Lee (1996)H99 × Mo17SD/DPSNot detected−/−−/−
Poupard et al. (2001)F2 × MBS847SDNot detected−/+−/−
Mechin et al. (2001)F2 × MBS847SDNot detected−/+−/−
Bouchez et al. (2002)cF2 × MBS847cSDNot detected−/+−/−
  • a Other studies reported a QTL for days to flowering in the Vgt1 region (e.g., Abler et al. 1991; Koester et al. 1993; Tuberosa et al. 1997; Jiang et al. 1999) but, due to incomplete information, they cannot be included in our comparison.

  • b Mean value of two environments.

  • c In Bouchez et al. (2002) the iodent line (Io) was MBS847 (A. Charcosset, personal communication).

  • d Days to pollen shed (DPS); silking date (SD).

  • e NA, not available.

  • f +, late allele; −, early allele, in parental line1/parental line2/…