Table 5. Variance components, within and across environment heritability estimation for nine characters associated with continuous storage root formation and bulking in sweetpotato.
| Trait | σ 2 R | σ 2 SLG | σ 2 LG | σ 2 SG | σ 2 G | H1 | H2 | H(%) |
|---|---|---|---|---|---|---|---|---|
| CSRFAB | 1.4 | 0.2 | 0.1 | 0.1 | 0.2 | 68.2 | 53.7 | 50.5 |
| SRY | 51.1 | 8.8 | 3.8 | 3.7 | 0.9 | 77.2 | 30.9 | 11.1 |
| SRNO | 16.3 | 3.9 | 2.4 | 2.2 | 7.7 | 74.9 | 53.2 | 67.2 |
| VY | 412.5 | 8.8 | 3.8 | 3.7 | 4.7 | 68.2 | 24.9 | 19.9 |
| SRD | 52.5 | 9.2 | 4 | 3.8 | 4.9 | 67.2 | 63.1 | 38.3 |
| SRL | 339.6 | 9.2 | 4 | 3.8 | 4.9 | 73.5 | 60.8 | 22.5 |
| CRW | 0.4 | 9.4 | 4.1 | 3.9 | 5 | 69.9 | 69.4 | 44 |
| CRN | 7.4 | 9.4 | 4.1 | 3.9 | 5 | 73.1 | 56.8 | 43.2 |
| SEN | 0.5 | 9 | 3.9 | 3.7 | 4.8 | 46.7 | 58.0 | 44 |
Note. H: broad sense heritability across location and season; H1: within environment broad sense heritability across 2 seasons for NaCRRI; H2: within environment broad sense heritability across 2 seasons for NaSARRI; σ 2R: residual variance; σ 2 G: genotypic variance; σ 2p: phenotypic variance; σ 2SLG: variance due to season by location by genotype interaction; σ 2 LG: variance due to location by genotype interaction; σ 2 SG: variance due to season by genotype interaction; σ 2 GxE: genetic by environmental variance; SRNO: storage root number per plant; SRY: storage root yield; VY: vine yield; SRDIA: storage root diameter; SRLG: storage root length; CRW: commercial root weight: CRN: commercial root number; VW; vine weight; CSRFAB: continuous storage root formation and bulking; SEN: senescence