Table 1.
Segregation ratios for Al3+ tolerance (5 μm AlCl3) of backcrossed progeny derived from crosses between the 4D(4B) substitution line and ‘Jandaroi’
| Tolerant | Sensitive | Expected ratio | P-value (χ2) | |
|---|---|---|---|---|
| F1 | 5 | 1* | All tolerant | n.d. |
| BC1F1 | 4 | 2 | 1:1 | n.d. |
| BC2F1 | 10 | 4 | 1:1 | n.d. |
| BC3F1 | 5 | 5 | 1:1 | n.d. |
| BC1F2 | 40 | 20 | 3:1 | 0·14 |
| BC2F2 | 38 | 21 | 3:1 | 0·06 |
| BC3F2 | 57 | 18 | 3:1 | 0·84 |
| Combined F2 populations | 135 | 59 | 3:1 | 0·26 |
*The appearance of a sensitive seedling is likely to be the result of an unsuccessful cross.
n.d., not determined, i.e. P-values were not calculated due to the small sample size.