Table 1.

Distribution of saponin contents in the parental cultivars and the RIL population

	Parents		RILs
	Peking (mg/g)	Tamahomare (mg/g)	Range (mg/g)	Mean(mg/g)	CV (%)
Tsukuba
Group A saponin in cotyledon	0.108 ± 0.018	0.065 ± 0.004	0.079–0.241	0.125	24.6
Group A saponin in hypocotyl	1.396 ± 0.179	0.750 ± 0.095	0.730–1.915	1.306	19.7
Group B saponin in cotyledon	0.140 ± 0.035	0.110 ± 0.018	0.095–0.282	0.166	20.7
Group B saponin in hypocotyl	0.420 ± 0.028	0.480 ± 0.104	0.204–0.920	0.493	29.0
Nagano
Group A saponin in cotyledon	0.130 ± 0.001	0.070 ± 0.001	0.062–0.207	0.107	23.6
Group A saponin in hypocotyl	1.270 ± 0.039	0.890 ± 0.151	0.650–1.957	1.138	23.4
Group B saponin in cotyledon	0.199 ± 0.048	0.124 ± 0.023	0.097–0.265	0.157	56.6
Group B saponin in hypocotyl	0.460 ± 0.036	0.389 ± 0.030	0.230–0.854	0.505	28.8
Kyoto
Group A saponin in cotyledon	0.099 ± 0.002	0.096 ± 0.005	0.047–0.307	0.125	45.8
Group A saponin in hypocotyl	1.259 ± 0.108	0.854 ± 0.024	0.576–2.394	1.372	30.1
Group B saponin in cotyledon	0.152 ± 0.022	0.132 ± 0.024	0.065–0.470	0.165	44.6
Group B saponin in hypocotyl	0.497 ± 0.013	0.432 ± 0.069	0.210–1.252	0.578	61.9

CV: coefficient of variation.

Values in parents are the means ± standard deviations.