Table 3.

Effect of the qSw12-1 alleles on single seed weight (SSW) and other seed yield components in segregated progeny derived from residual heterozygous lines (RHLs)

RHL	Estimated allele at qSw12-1	Marker allele on Chr. 12						SSW (mg)	NP	NOP	RSS (%)	SY (g)
		Satt192	GMES4012	Satt469	Sat_206	Satt302	Satt142
RHL-086	‘Natto-shoryu’	N	N	N	N	N	N	245 ± 14 ***	138 ± 26 NS	2.21 ± 0.04 NS	88.7 ± 2.7 NS	66.5 ± 13.8 NS
	‘Tachinagaha’	N	N	T	T	T	N	278 ± 13	118 ± 24	2.21 ± 0.04	89.4 ± 2.6	64.7 ± 12.0
RHL-103	‘Natto-shoryu’	T	N	N	N	T	T	186 ± 8 ***	239 ± 37 *	2.03 ± 0.02 NS	91.4 ± 1.6 NS	82.0 ± 12.2 NS
	‘Tachinagaha’	T	T	T	T	T	T	219 ± 14	207 ± 39	2.03 ± 0.02	90.2 ± 2.1	83.0 ± 11.1

SSW, single seed weight; NP, number of pods per plant; NOP, number of ovules per pod; RSS, rate of seed-set; SY, seed yield per plant.

Data were obtained from 12 plants (3 plants with 4 replications) for each genotype.

The flanking markers of qSw12-1 are indicated in boldface type.

N and T indicate the ‘Natto-shoryu’ and ‘Tachinagaha’ alleles at each marker locus, respectively.

Trait value of each genotype group is shown as mean ± standard deviation.

^{* and ***}represent statistical significance at P < 0.05 and 0.001 by Welch’s t-test, respectively; NS = not significant.