Table 2. Observed heterosis or increase of the traits of Dongfang no.7 (%).
| Average heterosis of hybrid1 | Maximum average increase over 2 source sporophytes | Increase of Dongfang no.7 over Control 1 2 | Increase of Dongfang no.7 over Control 2 2 | Average increase over 2 controls2 | |
|---|---|---|---|---|---|
| Length | 18.0 | 18.6 | 14.2 | 21.2 | 17.6 |
| Width | 21.7 | 38.9 | 27.6 | 25.7 | 26.7 |
| Thickness | 9.1 | 22.7 | 8.3 | 13.0 | 10.6 |
| Fresh weight | 50.4 | 59.6 | 32.9 | 33.3 | 33.1 |
| Air dry weight | 35.5 | 45.0 | 41.2 | 45.1 | 43.2 |
| Yield | na | na | 41.4 | 45.2 | 43.2 |
1based on the traits of hybrid evaluated in 2008 and those of the source sporophyte individuals of parental gametophyte clones.
2based on the traits of Dongfang no.7 seedling-raised from reconstructed sporophytes evaluated in 2015; na, not applicable.