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Table 1 Summary of the foreground and background selections carried out during backcross generations

From: Introgression of null allele of Kunitz trypsin inhibitor through marker-assisted backcross breeding in soybean (Glycine max L. Merr.)

Generation Selection Cross combination No. of plants screened No. of heterozygous plants No. of plants tested for background selection No. of background markers surveyed RPG content range (%)
F1 Foreground selection DS9712 x PI542044 82 78 - - -
F1 Foreground selection DS9814 x PI542044 69 53 - - -
BC1F1 Foreground & background selection DS9712 x PI542044 59 19 19 93 70.43–87.63
BC1F1 Foreground & background selection DS9814 x PI542044 52 10 10 81 60.26–73.78
BC2F1 Foreground & backgroundselection DS9712 x PI542044 73 38 38 23–24 93.01–98.82
BC2F1 Foreground & background selection DS9814 x PI542044 29 15 15 41–45 83.3–91.67