Table 4.
Stepwise regression for TKW in the field based on the 44 traits in the greenhouse.
| Yield component | Percentage of square | Effect value | Fisher test value |
|---|---|---|---|
| TKW (tillers) | 27.20 | 0.05336 | 4.09E-09*** |
| Stem DW (main shoot) | 12.42 | −4.34451 | 1.65E-05*** |
| Grain weight/spike chaff (main shoot) | 12.29 | 2.24634 | 1.79E-05*** |
| Grain number for tillers (tillers) | 11.63 | −1.4021 | 2.80E-05*** |
| Leaf number (main shoot) | 4.19 | −0.15695 | 0.008125** |
| Total | 67.73 |
Note: the traits from tillers or main shoot are indicated in parentheses. Grain weight/spike chaff is the ratio between spike weight and spike chaff on the main shoot. TKW, thousand kernel weight. *, **, *** suggest the significance of Fisher test value on 0.05, 0.01, 0.001 level, respectively.