Table I.
Inheritance of iar4-3 in IAR4L and iar4L-1 backgrounds
| 2,4-D Sensitive | 2,4-D Resistant | χ2 Value | |
|---|---|---|---|
| Col × iar4-3; F2 | 242 | 60 | 4.24a (3:1) |
| iar4-3 × iar4L-1; F2 | 238 | 28 | 29.7a (3:1) |
| IAR4/iar 4-3 ♀ × iar4-3 ♂; F1 | 64 | 68 | 0.12 (1:1) |
| iar4-3 ♀ × IAR4/iar4-3 ♂; F1 | 191 | 131 | 11.2a (1:1) |
| iar4L-1/iar4L-1 IAR4/iar4-3 ♀ × Col ♂ | 18 | 22b | 0.4 (1:1) |
| Col ♀ × iar4L-1/iar4L-1 IAR4/iar4-3 ♂ | 44 | 0b | 44a (1:1) |
a
Significant deviation from expected using a 5% critical value.
b
iar4-3 transmission was assessed by the appearance of 2,4-D-resistant F2 segregants. Numbers correspond to the number of F1 plants that segregated iar4-3/iar4-3 2,4-D-resistant progeny.