Table 7. Segregation ratios and goodness of fit for leaf color in F1, F2 bulk, and backcross families derived from hybridization of Cercis canadensis ‘Texas White’ × ‘JN2’Z.
| Progeny phenotype |
||||||||
|---|---|---|---|---|---|---|---|---|
| Cross | Family | Green | Gold | Mottled | Gold + mottled | Test ratioY | χ2 (1df) | P value |
| ‘Texas White’ × ‘JN2’ | F1 | 463 | 0 | 0 | 0 | All green | ||
| ‘Texas White’ × ‘JN2’ (bulk) | F2 | 1025 | 85 | 85 | 170 | 3:1 | 73.98 | <0.001 |
| ‘Texas White’ × (‘Texas White’ × ‘JN2’) | BC1P1 | 877 | 0 | 0 | 0 | All green | ||
| ‘JN2’ × (‘Texas White’ × ‘JN2’) | BC1P2 | 68 | 23 | 17 | 40 | 1:1 | 7.26 | 0.007 |
| ‘JN2’ × ‘Texas White’ | F1 | 8 | 0 | 0 | 0 | All green | ||
Z
Progeny phenotype based on leaf color, determined at the two-lead stage, after approximately 30 days of growth under greenhouse conditions.
Y
Expected segregation based on a one gene model with (gold + mottled) recessive to green. Testing for a 3:1 F2 ratio (green: gold + mottled) and a 1:1 backcross ratio (green: gold + mottled).