Variance components and allied parameters

Formulae

D (additive variance)

$\text{VOLO}-E$

F (mean Covariance of additive and dominance)

$\text{2VOLO}-\text{4WOLOI}-2\left(n-2\right)\left(E/n\right)$

H₁ (dominance variance)

$\text{VOLO}-\text{4VL}-\text{4WOLOI}-\left(3n-2\right)\left(E/n\right)$

H₂ (proportion of positive or negative genes)

$\text{4VILI}-\text{4VOL}-\text{2}E$

h² (dominance effect)

$\text{4}{\left(\text{MLI}-\text{MLO}\right)}^{\text{2}}-4\left(n-1\right)\left(E/n^2\right)$

E (environmental variance)

$1/r\left[\text{RSS}+\text{ESS}\right]/\left[\left(r-1\right)+\left(c-1\right)\left(r-1\right)\right]$

Mean degree of dominance

$\sqrt{\left(H_1/D\right)}$

Proportion of dominant genes with positive or negative sign

(H₂/4H₁)

Proportion of dominant and recessive genes

$\sqrt{\left[\left(4D{H}_1\right)+F\right]}/\sqrt{\left[\left(4D{H}_1\right)-F\right]}$

Number of gene blocks exhibiting dominance

h²/H₂

h² ns (heritability in narrow sense)

$\left[D/4\right]/\left[D/4+H_1/4+E-F/4\right]$