TABLE 2.
Epistatic interaction between the dw3 mutation and the chromosome 9 QTL
| Average phenotypic values (σ) ± 95% C.I.
|
Model effect (σ)
|
||||||
|---|---|---|---|---|---|---|---|
| Trait | Dw3, HT9.1 (+/+, +/+) N = 48 (11 SC, 37 elite) | dw3, HT9.1 (−/−, +/+) N = 75 (51 SC, 24 elite) | Dw3, ht9.1 (+/+, −/−) N = 80 (68 SC, 12 elite) | dw3, ht9.1 (−/−, −/−) N = 131 (77 SC, 54 elite) | dw3 | ht9.1 | dw3 × ht9.1 |
| Plant height | 1.53 ± 0.33 | 0.09 ± 0.15 | −0.42 ± 0.13 | −0.44 ± 0.09 | −1.35 | −1.80 | +1.28 |
| Preflag leaf height | 1.65 ± 0.32 | 0.08 ± 0.13 | −0.30 ± 0.14 | −0.53 ± 0.07 | −1.47 | −1.74 | +1.19 |
| Preflag to flag | 0.57 ± 0.26 | 0.11 ± 0.19 | −0.19 ± 0.17 | −0.21 ± 0.14 | NS | NS | NS |
| Flag leaf to apex | −0.09 ± 0.25 | 0.02 ± 0.20 | −0.55 ± 0.18 | 0.29 ± 0.15 | +0.326 | NS | NS |
Average phenotypic values of sorghum lines carrying one, both, or neither of the dwarfing mutations are shown, along with main effects for each mutation and the interaction effect between them. Values shown are in standard deviations relative to the mean; only model effects significant at P < 0.001 are shown.