Dissection and fine-mapping of two QTL for grain size linked in a 460-kb region on chromosome 1 of rice

Rice

Table 3 Dissection of qTGW1.2c into two QTL using five sets of near isogenic lines in BC₂F_13:14

Name	Trait^a	Phenotype (mean ± sd)^b		P	A ^c	R² (%)^d
Name	Trait^a	NIL^ZS97	NIL^MY46	P	A ^c	R² (%)^d
D1	TGW	28.22 ± 0.50	28.24 ± 0.44	0.8500
	GL	8.392 ± 0.042	8.338 ± 0.046	< 0.0001	−0.027	14.7
	GW	3.063 ± 0.022	3.080 ± 0.017	0.0023	0.009	11.6
	RLW	2.740 ± 0.018	2.707 ± 0.012	< 0.0001	−0.017	39.0
D2	TGW	27.10 ± 0.39	27.73 ± 0.37	< 0.0001	0.32	30.3
	GL	8.342 ± 0.039	8.332 ± 0.042	0.3473
	GW	3.079 ± 0.023	3.121 ± 0.023	< 0.0001	0.021	33.1
	RLW	2.710 ± 0.020	2.670 ± 0.018	< 0.0001	−0.020	41.2
D3	TGW	27.22 ± 0.38	27.75 ± 0.49	< 0.0001	0.26	15.3
	GL	8.313 ± 0.051	8.298 ± 0.042	0.2498
	GW	3.037 ± 0.020	3.084 ± 0.022	< 0.0001	0.023	39.8
	RLW	2.738 ± 0.016	2.691 ± 0.017	< 0.0001	−0.023	49.1
D4	TGW	27.71 ± 0.39	28.11 ± 0.40	0.0013	0.20	14.3
	GL	8.286 ± 0.050	8.321 ± 0.052	0.0205	0.018	8.3
	GW	3.087 ± 0.017	3.116 ± 0.021	< 0.0001	0.014	25.7
	RLW	2.684 ± 0.018	2.671 ± 0.017	0.0192	−0.007	8.9
D5	TGW	27.25 ± 0.36	27.53 ± 0.42	0.0126	0.14	7.2
	GL	8.339 ± 0.047	8.368 ± 0.049	0.0328	0.014	5.5
	GW	3.046 ± 0.015	3.075 ± 0.016	< 0.0001	0.015	27.3
	RLW	2.738 ± 0.019	2.721 ± 0.016	0.0015	−0.008	11.7

^aTGW 1000-grain weight (g), GL grain length (mm), GW grain width (mm), RLW ratio of grain length to width
^bNIL^ZS97 and NIL^MY46 are near isogenic lines with Zhenshan 97 and Milyang 46 homozygous genotypes in the segregating region, respectively
^cAdditive effect of replacing a Zhenshan 97 allele with a Milyang 46 allele
^dProprotion of phenotypic variance explained by the QTL effect