Skip to main content

Table 4 Across-trial estimates of variances, narrow-sense individual heritability, narrow-sense family heritability, type B genetic correlation, relative expected genetic gain by selecting the top 1%, standard error (between parentheses), and relative magnitudea [between brackets, %] for modulus of elasticity estimated at year 24 from progeny trials in the mixed and boreal forests

From: Rapid assessment of wood traits for large-scale breeding selection in Picea mariana [Mill.] B.S.P.

Vegetation subzone Mixed forest Boreal forest
Parameter V fak MoE fak+pil V fak MoE fak+pil
\( {\widehat{\sigma}}_F^2 \) 0.008b 0.040b 0.008b 0.06b
(0.002) (0.013) (0.002) (0.02)
[13.3] [9.0] [12.0] [9.1]
\( {\widehat{\sigma}}_{S\ast F}^2 \) 0.0003 0.010 0 0
(0.0011) (0.009)   
[0.5] [2.3] [0] [0]
\( {\widehat{\sigma}}_{\varepsilon}^2 \) 0.054b 0.393 0.058b 0.60b
(0.002) (0.017) (0.002) (0.03)
[86.2] [88.7] [88.0] [90.9]
\( {\widehat{h}}_{ind}^2 \) 0.53 0.36 0.48 0.37
(0.12) (0.11) (0.11) (0.09)
\( {\widehat{h}}_{f\; am}^2 \) 0.74 0.61 0.73 0.66
(0.07) (0.10) (0.05) (0.06)
\( {\widehat{r}}_B \) 0.97b 0.80b 1b 1b
(0.12) (0.18) (0) (0)
\( {\widehat{G}}_{1\%} \) 12.82 20.17 11.38 19.64
  1. V fak Fakopp acoustic velocity, MoE fak+pil Fakopp and Pilodyn-derived modulus of elasticity
  2. aPercentage of each estimated variance component to total (phenotypic) variance \( \left({\widehat{\sigma}}_p^2={\widehat{\sigma}}_F^2+{\widehat{\sigma}}_{S\ast F}^2+{\widehat{\sigma}}_{\varepsilon}^2\right) \)
  3. bSignificantly different from 0 (for \( {\widehat{r}}_B \)) or significantly positive (for variance estimates) at the 5% significance level. See Table 2 for parameter definitions.