Table 2.
Characteristics of Parents and F1 Hybrids
| Line or Plant
|
|||||||
|---|---|---|---|---|---|---|---|
| Character | A. thaliana LC612 | Care-1 | Sue-2 | 49-2A | 49-2B | 605A | 605B |
| n (no. of gamete chromosomes) | 5 | 16 | 13 | 13a | 13 | 13 | 13 |
| Leaf length (cm) | 3.8 ± 0.3 | 9.7 ± 0.8 | 8.8 ± 1 | NDb | 8.8 ± 0.6 | 11 ± 0.8 | 9.5 ± 1.4 |
| Leaf serrationc | − | ++ | ++ | + to −d | ++ | ++ | + |
| Weeks to bolting | 3 | 5 | 6 | 20 | 5 | 6 | 5 |
| Secondary rosettese | No | Yes | Yes | No | Yes | Yes | Yes |
| Petal length (mm) | 3.7 ± 0.04 | 7.1 ± 0.04 | 6 ± 0.05 | 3 ± 0.03 | 5.2 ± 0.04 | 5.8 ± 0.05 | 5.2 ± 0.04 |
| Corolla diameter (mm) | 3.3 ± 0.03 | 9.7 ± 0.07 | 6.1 ± 0.07 | ND | 6.2 ± 0.03 | 7.2 ± 0.03 | 6 ± 0.03 |
| Anther orientationf | In | Out | In | In | Out | Out | Out |
| Self-compatibility | Yes | No | Yes | Yes | Yes | Yes | Yes |
| Polleng | ND/ND/92 | 100/94/98 | 86/88/81 | ND | 29/17/13 | 76/24/6 | ND |
| Seed set | Excellent | Very good | Excellent | Poor | Poor | Poor | Poor |
a
Chromosomes counts were performed in F2 progeny.
b
ND, not determined.
c
(−), none; (+), moderate; (++), strong.
d
Due to “reversion” to an A. thaliana–like phenotype in the inflorescence (see text).
e
Rosettes formed in cauline leaf axils.
f
Anthers dehisced toward (in) or away from (out) stigma.
g
Percentage of viable pollen at three stages (Regan and Moffatt, 1990): after meiosis (stage 10), during maturation (stage 11), and at dehiscence (stage 13).