Broad-Sense Heritability
Estimating cumulative genetic contribution (epistasis, dominanace, additive, etc.), compared to environment, using clones. Narrow-Sense Heritability asks, "How much can we change this population with selection?" Broad-Sense Heritability asks, "How much of what I'm observing is genetic vs environment?
Population Structure
Trait Statistics
How to interpret these inputs
Broad-sense heritability (H²) partitions phenotypic variance using clones. Genetic variance is inferred from differences between genotype means/averages, while environmental variance is inferred from variation among clones of the same genotype. Basically, it helps answer: How much of the observed variation in a trait is attributable to genetics versus environmental effects, and therefore whether genetic selection is expected to meaningfully change the traitif the environment stays the same.
- VG (genetic variance) is the variance of mean trait values across distinct genotypes.
- VE (environmental variance) is the average variance observed among clones within each genotype.
As replication increases and environmental noise is averaged out, estimates of H² become more stable and interpretable.