HIFs (Heterogeneous Inbred Families) are nearly-isogenic lines useful to complement the RIL populations in order to allow a quick confirmation of individual QTLs. HIFs were selected in the progeny of RILs that show a single residual heterozygous region. Complete HIF sets covering the whole genome are available.
A family is generally composed of 3 lines with the female parent genotype and 3 lines with the male parent genotype at the segregating region. The lines numbered 10, 11 and 12 (for example, for the family 8HV195, lines 8HV10195, 8HV11195 and 8HV12195) have the genotype of the female parent, and the lines numbered 13, 14 and 15 have the genotype of the male parent.
Note that for some families we only got one or two lines from one genotype, for example, if we only have one line with the female parent genotype, there is a line 10 but 11 and 12 are missing.