Table 2.
Parental, F1, F2 and BC1F1 means, and estimates of gene effects for root rhizosheath size for two wheat crosses
| Generation | Fronteira/EGA Burke(g m−1) | Fronteira/Yitpi(g m−1) |
|---|---|---|
| Parent 1 (P1) | 3.71 (0.11) | 3.38 (0.10) |
| Parent 2 (P2) | 1.68 (0.05) | 1.25 (0.06) |
| F1 | 2.29 (0.09) | 1.97 (0.08) |
| F2 | 2.38 (0.04) | 1.93 (0.03) |
| BC1P1 | 2.22 (0.07) | 1.94 (0.05) |
| BC1P2 | 1.63 (0.07) | 1.45 (0.05) |
| l.s.d. | 0.18 | 0.15 |
| m | 2.58** | 2.20** |
| [a] | 0.92** | 0.94** |
| [d] | −0.58ns | −0.51ns |
| χ2 (P-value)a | 1.98 (0.58ns) | 3.88 (0.27ns) |
Values in parentheses are the standard errors.
a P-value for chi-square testing H O: adequacy of additive-dominance genetic model.
* and ** denote parameter estimates significantly different from zero at P = 0.05 and 0.01, respectively; ns denotes parameter estimates not significantly different at P = 0.05.
[a]: pooled additive genetic effect; [d]: pooled dominance genetic effect; l.s.d: least significant difference among generation means at P = 0.05; m: estimated mean.