Table 4. Fine mapping of qTGW2 using three NIL-F₂ populations.

Population	Trait	Phenotype (Mean ± SD)			LOD	A	D	R2 (%)
		Teqing	IRBB52	Heterozygote
Z1	TGW	24.03 ± 0.53	23.99 ± 0.51	23.94 ± 0.66	0.20
	GL	8.017 ± 0.073	8.004 ± 0.072	8.004 ± 0.065	0.26
	GW	2.805 ± 0.032	2.809 ± 0.036	2.808 ± 0.034	0.06
	LWR	2.858 ± 0.026	2.850 ± 0.026	2.851 ± 0.025	0.65
Z2	TGW	24.96 ± 0.54	25.90 ± 0.51	25.33 ± 0.49	18.38	0.46	−0.10	29.93
	GL	8.156 ± 0.094	8.266 ± 0.091	8.205 ± 0.087	9.30	0.053	−0.008	16.26
	GW	2.976 ± 0.026	3.004 ± 0.029	2.986 ± 0.022	7.76	0.014	−0.004	13.70
	LWR	2.750 ± 0.041	2.762 ± 0.037	2.757 ± 0.031	0.68
Z3	TGW	26.26 ± 0.88	26.34 ± 0.73	26.20 ± 0.84	0.22
	GL	8.272 ± 0.111	8.262 ± 0.078	8.271 ± 0.113	0.07
	GW	3.046 ± 0.046	3.054 ± 0.027	3.043 ± 0.046	0.51
	LWR	2.726 ± 0.070	2.714 ± 0.029	2.727 ± 0.067	0.39

Notes.

TGW

1,000-grain weight (g)

GL

Grain length (mm)

GW

Grain width (mm)

LWR

Length/width ratio

A

additive effect of replacing a Teqing allele with a IRBB52 allele

D

dominance effect

R²

proportion of the phenotypic variance explained by the QTL