Table 5. Genetic parameters of heritability and combining ability.
| Traits | VG (%) | VS (%) | Vgf (%) | Vgm (%) | Vgfm (%) | h2 b (%) | h2 n (%) |
| SY | 25.71 | 74.30 | 10.32 | 13.70 | 75.98 | 68.77 | 18.61 |
| SS | 68.56 | 31.44 | 42.96 | 26.47 | 30.58 | 89.67 | 61.66 |
| SP | 66.13 | 33.87 | 29.97 | 39.26 | 30.78 | 75.12 | 40.06 |
| TSW | 80.47 | 19.53 | 69.52 | 11.30 | 19.18 | 93.05 | 74.88 |
| OC | 70.39 | 29.61 | 35.80 | 34.83 | 29.37 | 68.27 | 48.18 |
VG: variance of general combining ability (GCA); VS: variance of specific combining ability (SCA); Vgf: contribution ratio of the female GCA variance to the total variance; Vgm: contribution ratio of the male GCA variance to the total variance; Vgfm: contribution ratio of the SCA variance to the total variance; h2 b: broad sense heritability; h2 n: narrow sense heritability.