TABLE 1

Equations for calculating HB of the Lemont/Teqing RILs and the midparental heterosis (HMP) of the two BCF1 and two testcross F1 populations

PopulationaNEquationsb
RILs254HB = RIL − MP, where MP = (Lemont + Teqing)/2
LTBCF1172HMP = F1 − MP, where MP = (RIL + Lemont)/2
TQBCF1177Hmp = F1 − MP, where MP = (RIL + Teqing)/2
Z413BCF1192HMP = F1 − MP, where MP = (RIL + Z413)/2
IR64BCF1187HMP = F1 − MP, where MP = (RIL + IR64)/2
  • a LTBCF1s and TQBCF1s are two BCF1 populations obtained by crossing the RILs with the parents, Lemont (LT) and Teqing (TQ), while Z413F1s and IR64F1s are two testcross F1 populations obtained by crossing the RILs with the testers Zhong 413 (Z413) and IR64.

  • b F1 are mean trait values of individual BC or testcross hybrids while RIL is the corresponding female RIL parent for each of the BC or testcross hybrids.