Table 2. Cytological features of PMCs (n = 126) in tripsazea at diakinesis I.
| CHROMOSOME ASSOCIATION | NUMBER (PERCENTAGE) OF PMCS WITH CORRESPONDING VALENT | MEIOTIC CONFIGURATION | |||
|---|---|---|---|---|---|
| AVERAGE | MIN. | MAX. | |||
| Univalent | m | 83 (65.87) | 1.04 | 0 | 6 |
| t | 89 (70.63) | 2.24 | 2 | 12 | |
| p | 63 (50.00) | 0.96 | 0 | 6 | |
| I | 4.24 | ||||
| Bivalent | mm | 126 (100.0) | 5.29 | 2 | 10 |
| tt | 126 (100.0) | 14.55 | 9 | 17 | |
| pp | 126 (100.0) | 5.59 | 1 | 9 | |
| mt | 24 (19.05) | 0.19 | 0 | 1 | |
| mp | 81 (64.29) | 1.53 | 2 | 6 | |
| tp | 5 (3.97) | 0.04 | 0 | 1 | |
| II | 27.19 | ||||
| Trivalent | mmm | 12 (9.52) | 0.09 | 0 | 1 |
| ttt | 9 (7.14) | 0.07 | 0 | 1 | |
| ppp | 3 (2.38) | 0.02 | 0 | 1 | |
| mmt | 17 (13.49) | 0.14 | 0 | 1 | |
| mtt | 3 (2.38) | 0.02 | 0 | 1 | |
| mmp | 17 (13.49) | 0.20 | 0 | 3 | |
| mpp | 24 (19.05) | 0.22 | 0 | 2 | |
| ttp | 4 (3.17) | 0.03 | 0 | 1 | |
| tpp | — | — | — | — | |
| III | 0.79 | ||||
| Tetravalent | mmmm | 32 (25.40) | 0.27 | 0 | 2 |
| tttt | 20 (15.87) | 0.53 | 0 | 4 | |
| pppp | 40 (31.75) | 0.38 | 0 | 2 | |
| mmmt | — | — | — | — | |
| mmtt | 11 (8.73) | 0.08 | 0 | 1 | |
| mttt | — | — | — | — | |
| mmmp | 8 (6.35) | 0.06 | 0 | 1 | |
| mmpp | 117 (92.86) | 1.84 | 0 | 5 | |
| mppp | 8 (6.35) | 0.06 | 0 | 1 | |
| tttp | — | — | — | — | |
| ttpp | 4 (3.17) | 0.03 | 0 | 1 | |
| tppp | — | — | — | — | |
| IV | 3.25 | ||||
Chromosome complements from respective species: m–Z. mays, t–T. dactyloides, p–Z. perennis; each alphabet denotes a univalent dose.