TABLE 1.
Effect of Ab10-I dosage on neocentromere activity and recombination effect
| Genotype | Neocentromere activity (%) | Recombination effect (%) |
|---|---|---|
| Hypoploid (−/Ab10-I) | 58.5a ± 7.6, 217b (4) | 44.5c ± 4.6, 593b (4) |
| Euploid (N10/Ab10-I) | 46.4 ± 5.1, 392 (4) | 51.9 ± 3.3, 876 (4) |
| Hyperploid (N10/N10/Ab10-I) | 56.0 ± 7.3, 225 (3) | 47.3 ± 2.4, 582 (3) |
There were no statistically significant differences between hypoploid and hyperploid plants for neocentromere activity or recombination effect. The data from euploid plants were significantly different from both hypoploid and hyperploid plants (P ≤ 0.01).
a
Percentage of anaphase I cells (± standard deviation) with a bridge but no fragment present, indicating neocentromere activity had moved the knobbed fragment to a pole.
b
Total number of anaphase I cells. Number in parenthesis indicates number of plants from which meiocytes were harvested.
c
Percentage of anaphase I cells (± standard deviation) with a bridge and/or fragment, indicating recombination within Inv3a.