Table 1.
Pattern and extent of transgenerational, non-additive gene expression in each of the synthetic allohexaploid lines
| Synthetic line and generation |
Allo-AT5 | Allo-AT9 | ||||
|---|---|---|---|---|---|---|
| S4 | S5 | Aver. | S4 | S5 | Aver. | |
| Total no. and (%a) of nonadditively expressed genes |
828 (2.8) |
1,642 (5.5) |
1,235 (4.2) |
1,121 (3.8) |
930 (3.1) |
1,026 (3.5) |
| No. and (%b) of up-regulated genes | 485 (58.6) |
826 (50.3) |
656 (53.1) |
545 (48.6) |
398 (42.8) |
472 (46.0) |
| No. and (%b) of down-regulated genes | 343 (41.4) |
816 (49.7) |
580 (46.9) |
576 (51.4) |
532 (57.2) |
554 (54.0) |
| No. and (%b) of the total as well as up- and down-regulated non-additively expressed genes that matched the genes showing differential expression between parental species | T-483 (58.3) Up- 237 (28.6) Down: 246 (29.7) |
T-1055 (64.3) Up- 426 (25.9) Down: 629 (38.3) |
T-769 (62.3) Up- 332 (26.8) Down: 438 (35.4) |
T-741 (66.1) Up- 316 (28.2) Down: 425 (37.9) |
T-613 (65.9) Up- 203 (21.8) Down: 410 (44.1) |
T-677 (66.0) Up- 260 (25.3) Down: 418 (40.7) |
| No. and (%b) of high-diploid Parental dominance genes |
31 (3.7) |
41 (2.5) |
36 (2.9) |
97 (8.7) |
79 (8.5) |
88 (8.6) |
| No. and (%b) of high-tetraploid Parental dominance genes |
178 (21.5) |
342 (20.8) |
260 (21.1) |
112 (10.0) |
64 (6.9) |
88 (8.6) |
| No. and (%b) of Low-diploid Parental dominance genes |
64 (7.7) |
62 (3.8) |
63 (5.1) |
110 (9.8) |
91 (9.8) |
101 (9.8) |
| No. and (%b) of low-tetraploid parental dominance genes |
78 (9.4) |
190 (11.6) |
134 (10.9) |
129 (11.5) |
115 (12.4) |
122 (11.9) |
| No. and (%b) of over-dominance genes |
44 (5.3) |
94 (5.7) |
69 (5.6) |
108 (9.6) |
65 (7.0) |
87 (8.4) |
| No. and (%b) of under- Dominance genes |
14 (1.7) |
31 (1.9) |
23 (1.8) |
73 (6.5) |
35 (3.8) |
54 (5.3) |
aof all expressed genes.
bof non-additively expressed genes.
The up- or down-regulated numbers of the nonadditively expressed genes.
The nonadditively expressed genes can be divided into six categories based on their expression: F represented the synthetic allohexaploid lines; P, paternal lines; and M, maternal lines. High-paternal dominance, F = P, F > M, P > M; high-maternal dominance, F = M, F > P, M > P; low-paternal dominance, F = P, F < M, P < M; low-maternal dominance, F = M, F < P, M < P; over-dominance, F > P and F > M; under-dominance, F < P and F < M.