Table 1.
Morphometric traits and meiosis in control and in mutants.
| Attributes | Plant types | |||||||
|---|---|---|---|---|---|---|---|---|
| Control | “Thick stem” | |||||||
| 2010 | 2011 | 2012 | Pooled | M 5 | M 6 | M 7 | Pooled | |
| Morphometric | ||||||||
| Plant height (cm) | 262.25 ± 7.8 | 263.40 ± 7.0 | 264.00 ± 3.5 | 263.22 ± 6.10 | 315.50 ± 1.00 | 317.25 ± 1.00 | 316.40 ± 0.50 | 316.38 ± 0.83 |
| Number of primary branches/plant | 2.42 ± 0.4 | 2.40 ± 0.5 | 2.40 ± 0.4 | 2.41 ± 0.43 | 2.40 ± 0.40 | 2.00 ± 0.20 | 2.50 ± 0.20 | 2.27 ± 0.27 |
| Total branches/plant | 4.00 ± 0.5 | 4.10 ± 0.6 | 4.00 ± 0.5 | 4.03 ± 0.05 | 6.00 ± 0.30 | 5.50 ± 0.45 | 5.60 ± 0.40 | 5.70 ± 0.38 |
| Number of capsule/plant | 18.40 ± 0.3 | 18.48 ± 0.5 | 19.00 ± 0.1 | 18.63 ± 0.30 | 25.00 ± 0.80 | 22.67 ± 0.90 | 23.10 ± 1.00 | 23.59 ± 0.9 |
| Capsule length (cm) | 8.20 ± 1.2 | 8.20 ± 1.2 | 8.10 ± 0.6 | 8.17 ± 1.00 | 7.90 ± 1.10 | 7.82 ± 0.28 | 8.00 ± 0.50 | 7.91 ± 0.93 |
| Seeds/capsule | 180.00 ± 3.8 | 182.12 ± 2.6 | 185.00 ± 2.0 | 182.37 ± 2.80 | 210 ± 3.54 | 204 ± 3.80 | 207 ± 1.90 | 207 ± 3.08 |
| Seed yield/plant (g) | 6.80 ± 0.8 | 6.90 ± 0.4 | 7.18 ± 0.1 | 6.96 ± 0.43 | 7.98 ± 0.62 | 7.78 ± 0.40 | 7.85 ± 0.38 | 7.87 ± 0.47 |
| Fiber yield/plant (g) | 24.28 ± 1.1 | 25.00 ± 0.5 | 24.84 ± 1.0 | 24.71 ± 0.87 | 78.33 ± 1.67 | 80.00 ± 1.20 | 80.12 ± 1.78 | 79.48 ± 1.55 |
| Meiosis | ||||||||
| Frequency/cell at diplotene | ||||||||
| I | 0.12 | 0.48 | 0.39 | 0.33 | 0.71 | 0.76 | 0.57 | 0.68 |
| II | 6.94 | 6.75 | 6.80 | 6.86 | 6.64 | 6.62 | 6.72 | 6.66 |
| Bivalent configurations | ||||||||
| Ring/cell | 0.48 ± 0.12 | 0.33 ± 0.10 | 0.46 ± 0.12 | 0.43 ± 0.11 | 0.33 ± 0.11 | 0.38 ± 0.12 | 0.45 ± 0.10 | 0.39 ± 0.11 |
| Rod/cell | 6.46 ± 0.08 | 6.43 ± 0.06 | 6.34 ± 0.06 | 6.41 ± 0.07 | 6.31 ± 0.06 | 6.24 ± 0.05 | 6.27 ± 0.10 | 6.12 ± 0.06 |
| Chiasma/cell | 7.42 ± 0.09 | 7.09 ± 0.12 | 7.26 ± 0.10 | 7.27 ± 0.10 | 6.97 ± 0.12 | 6.97 ± 0.13 | 7.17 ± 0.08 | 7.05 ± 0.07 |
| Number of cells scored at diplotene | 104 | 79 | 102 | 285 | 42 | 63 | 60 | 165 |
| Mean association/cell at MI | ||||||||
| I | 0.42 | 0.36 | 0.31 | 0.37 | 0.00 | 0.00 | 0.00 | 0.00 |
| II | 6.97 | 6.82 | 6.85 | 6.82 | 7.00 | 7.00 | 7.00 | 7.00 |
| Predominant association (7II) at MI (%) | 86.05 | 80.77 | 88.46 | 85.45 | 100.00 | 100.00 | 100.00 | 100.00 |
| Cells scored at MI | 86 | 78 | 104 | 268 | 34 | 58 | 62 | 154 |
| Equal (7/7) separation of chromosomes at AI (%) | 100.00 | 100.00 | 100.00 | 100.00 | 100.00 | 100.00 | 100.00 | 100.00 |
| Number of AI cells scored | 33 | 17 | 22 | 72 | 11 | 17 | 13 | 41 |
| Pollen fertility (%) | 84.65 | 78.15 | 81.18 | 80.92 | 64.79 | 68.98 | 68.00 | 67.15 |
| Number of pollen grains scored | 482 | 737 | 919 | 2138 | 497 | 432 | 450 | 1379 |