Table 2.
Average percentage of ovary cells with different chromosomes in the glufosinate-tolerant first- to fourth-generation progenies of the first backcross generation.
| Plant | RCN | Chromosome number | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| <36 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | >45 | ||
| BC1mF1L | 28–44 | 5.08 | 2.42 | 11.50 | 12.70 | 9.17 | 24.62 | 5.94 | 10.12 | 6.78 | 6.23 | 6.23 |
| BC1pF1L | 29–43 | 12.84 | 4.72 | 14.75 | 12.22 | 12.83 | 13.36 | 10.82 | 1.64 | 9.36 | 0 | 7.48 |
| BC1mF2L | 26–42 | 25.14 | 6.64 | 43.47 | 10.73 | 4.35 | 3.62 | 1.09 | 4.38 | 0 | 0 | 0.60 |
| BC1pF2L | 27–42 | 25.05 | 15.34 | 32.65 | 7.08 | 1.96 | 5.21 | 9.93 | 1.14 | 0 | 0 | 1.65 |
| BC1mF3L | 29–38 | 18.52 | 10.81 | 61.70 | 9.45 | 0 | 0 | 0 | 0 | 0 | 0 | 0.48 |
| BC1pF3L | 26–41 | 19.79 | 12.33 | 55.71 | 3.77 | 2.70 | 2.83 | 0.26 | 0 | 0 | 0 | 2.60 |
| BC1mF4L | 28–38 | 20.92 | 17.76 | 53.07 | 6.77 | 0 | 0 | 0 | 0 | 0 | 0 | 1.50 |
| BC1pF4L | 29–38 | 19.91 | 15.35 | 61.44 | 3.04 | 0 | 0 | 0 | 0 | 0 | 0 | 0.26 |
RCN means the range of chromosome number.
At least 30 cells from each plant of the first- to fourth-generation progeny were analyzed.
BC1mF1L to BC1mF4L and BC1pF1L to BC1pF4L are the glufosinate-tolerant first- to fourth-generation progenies of the first backcross generation (BC1) obtained from wild Brassica juncea × F1L or F1L × wild B. juncea, respectively. F1L indicates glufosinate-tolerant F1 hybrids obtained from wild B. juncea × glufosinate-tolerant transgenic oilseed rape. Progenitors in front of the × are always maternal plants, and progenitors after the × are always paternal plants.