Table 2.

Variance components and heritability for the seven characters on rice grain shape estimated in the RIL population

Character	Variance components				Heritability
	Environment	Genotype	G by E interaction	Random error	Plot level	Genotypic mean level
GL	0.0138	0.3501	0.0139	0.0111	0.9334	0.9944
GW	0.0006	0.0452	0.0021	0.0026	0.9073	0.9918
LW	0.0038	0.1255	0.0039	0.0040	0.9403	0.9989
GC	0.0623	1.4858	0.0648	0.0542	0.9258	0.9924
GA	0.0423	2.4288	0.1637	0.1579	0.8830	0.9838
GD	0.0035	0.0824	0.0049	0.0046	0.8971	0.9885
GR	0.0001	0.0022	0.0001	0.0001	0.9448	0.9954

GL grain length, GW grain width, LW grain length-to-width ratio, GC grain circumference, GA grain area, GD grain diameter, and GR grain roundness