Table I
Estimated narrow-sense heritabilities and variances in family-level inbreeding depression for DBH, based on progeny data from three crossing designs – selfing (SELF), open pollination (OP) and outcrossing with a polymix (POL) – at different ages from planting. The approximate standard errors of the parameter estimates are given within parenthesis.
| Age | Narrow-sense heritabilities | Variance in family-level | |||||
|---|---|---|---|---|---|---|---|
| (years) | inbreeding depression | ||||||
|
|
|
|
|
|
||
| 4 | 0.72 | 0.45 | 0.21 | 0.18 | 1.11 | 1.56 | |
| (±0.14) | (±0.09) | (±0.07) | (±0.06) | (±0.50) | (±0.40) | ||
| 6 | 0.50 | 0.31 | 0.33 | 0.28 | 2.88 | 1.29 | |
| (±0.12) | (±0.07) | (±0.09) | (±0.07) | (±1.19) | (±0.38) | ||
| 10 | 0.28 | 0.18 | 0.49 | 0.42 | 6.36 | NE | |
| (±0.10) | (±0.06) | (±0.11) | (±0.10) | (±3.34) | |||
and
= unadjusted and
adjusted heritability estimates from the OP progeny; and
unadjusted and
adjusted heritability estimates from the POL progeny; and
estimated
variances in family-level inbreeding depression due to selfing and open pollination;
NE = not estimated, as estimates of OP and POL family variances were not significantly
(P > 0.05) different.