Table 1.

Heritability estimates for each trait in the Arabidopsis epigenetic recombinant inbred lines population

Trait	Heritability model	H 2 Growth room‐1	H 2 Growth room‐2
DI	glm1	0.55	0.50
Pb	glm1	0.46	0.44
Lfi	glm1	0.76	0.65
Rbi	glm1	NA	0.62
DI	glm2	NA	0.50
Pb	glm2	NA	0.50
Lfi	glm2	NA	0.67
Rbi	glm2	NA	0.50

H ² is the broad sense heritability calculated with the formula (Eqn 1): $H^2={\sigma }_G^2/[{\sigma }_G^2+({\sigma }_e^2/n)]$ and 2: $H^2={\sigma }_G^2/[{\sigma }_G^2+{\sigma }_{\mathit{GT}}^2+({\sigma }_e^2/n)]$ including the variance of the temperature × epigenotype interaction. ${\sigma }_G^2$, the estimated epigenetic variance; ${\sigma }_{\mathit{GT}}^2$, the estimated temperature × epigenetic interaction variance; ${\sigma }_e^2$, the estimated environmental variance; n, the number of replicates per line. DI, disease index; Pb, pathogen DNA quantity; Lfi, leaf length in infected condition; Rbi, root biomass in infected condition. NA, not available.