Dissection of the qTGW1.1 region into two tightly-linked minor QTLs having stable effects for grain weight in rice

Table 2 QTL effects detected in four NIL populations

Population	Segregating region	Trait	Mean trait values				P	A	R ² (%)
			Zhejiang trial		Hainan trial
			NIL^ZS97	NIL^MY46	NIL^ZS97	NIL^MY46
Z1	Wn28382 − Wn28447	TGW	25.10	24.87	27.80	27.62	<0.0001	–0.10	14.83
		GL	8.020	7.995	7.972	7.958	0.0135	–0.009	6.02
		GW	3.090	3.083	3.267	3.260	0.0481	–0.004	4.03
Z2	Wn28382 − RM11554	TGW	24.63	24.49	28.02	27.97	0.0869
		GL	8.040	8.054	7.960	7.992	0.0015	0.011	8.76
		GW	3.070	3.062	3.276	3.262	0.0032	–0.006	8.71
Z3	RM11543 − RM11569	TGW	25.06	25.19	28.10	28.12	0.2174
		GL	8.040	8.056	7.939	7.960	0.0128	0.010	6.58
		GW	3.080	3.076	3.277	3.267	0.0049	–0.004	6.07
Z4	RM11569	TGW	24.33	24.50	27.91	28.00	0.0025	0.06	7.33
		GL	7.970	8.012	7.855	7.879	<0.0001	0.017	18.27
		GW	3.020	3.026	3.288	3.289	0.6089

TGW 1000-grain weight (g), GL grain length (mm), GW grain width (mm), NIL ^ZS97, NIL^MY46 NILs that are Zhenshan 97 and Milyang 46 homozygous in the segregating regions, respectively, A additive effect of replacing a ZS97 allele by a MY46 allele, R ² proportion of phenotypic variance explained by the QTL effect

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