Table 2. Sources of phenotypic variation Breakdown of the phenotypic variance from the independent effect of SNPs (i.e., broad-sense heritability), the equivalent effect of CG methylation state, and environment variance. Variance components were estimated using linear mixed models and have been mean-standardized and multiplied by 100 for readability. Bold components were found to be statistically significant at P < 0.05 using log-likelihood ratio tests between full and reduced models.

Trait	Spring			Fall
	IA (H2SNP)	IM (H2CG)	IRES	IA (H2SNP)	IM (H2CG)	IRES
Flowering time	0.332 (0.485)	0.062 (0.096)	0.269	0.245 (0.894)	0.004 (0.013)	0.026
Height	1.384 (0.387)	0.124 (0.035)	2.073	0.327 (0.373)	0.140 (0.161)	0.407
Tiller count	3.984 (0.633)	0.311 (0.056)	1.992	4.240 (0.597)	0.365 (0.051)	2.494
Leaf length	0.572 (0.483)	0.048 (0.041)	0.563	0.538 (0.523)	0.055 (0.053)	0.437
Leaf width	1.736 (0.627)	<0.001 (<0.001)	1.035	1.015 (0.241)	0.379 (0.090)	2.818
Ear count	0.806 (0.176)	0.308 (0.067)	3.474	0.290 (0.100)	0.232 (0.086)	2.273