Table 2 Segregation of TMV or CMV resistance over the T2, T3 and T4 generations of Nicotiana tabacum transformed with inverted repeats of the partial TMV movement protein (MP) gene or the partial CMV Replication protein (Rep) gene.
T1 line | No. of T2plants showing R/Sa | T2line | Â | No. of T3plants showing R/S | Responses of T4progenies | ||
|---|---|---|---|---|---|---|---|
| Â | R | S | Â | Â | R | S | Â |
MP16-17 | 45 | 5 | MP16-17 | -3 | 50 | 0 | All immune |
| Â | Â | Â | Â | -29 | 50 | 0 | All immune |
| Â | Â | Â | Â | -58 | 50 | 0 | All immune |
MP31-28 | 36 | 14 | MP31-28 | -31 | 41 | 9 | Variable (47/3)c |
| Â | Â | Â | Â | -43 | 37 | 13 | --d |
| Â | Â | Â | Â | -55 | 40 | 10 | -- |
MP39-36 | 39 | 11 | MP39-36 | -25 | 33 | 17 | Variable (42/8) |
| Â | Â | Â | Â | -37 | 39 | 11 | -- |
| Â | Â | Â | Â | -49 | 38 | 12 | -- |
MP53-52 | 43 | 7 | MP53-52 | -7 | 42 | 8 | Variable (46/4) |
| Â | Â | Â | Â | -21 | 45 | 5 | Variable (48/2) |
| Â | Â | Â | Â | -46 | 44 | 6 | Variable (48/2) |
MP36-17 | 0 | 50 | MP36-17 | -2 | 0 | 50 | All susceptible |
Wt+b | 0 | 50 | Wt+ | Â | 0 | 50 | All susceptible |
Rep15-1 | 50 | 0 | Rep15-1 | -1 | 50 | 0 | All immune |
| Â | Â | Â | Â | -7 | 50 | 0 | All immune |
| Â | Â | Â | Â | -32 | 50 | 0 | All immune |
Rep15-30 | 46 | 4 | Rep15-30 | -7 | 39 | 11 | Variable (42/8) |
| Â | Â | Â | Â | -23 | 46 | 4 | Variable (45/5) |
| Â | Â | Â | Â | -38 | 42 | 8 | Variable (48/2) |
Rep15-66 | 36 | 14 | Rep15-66 | -7 | 32 | 18 | Variable (40/10) |
| Â | Â | Â | Â | -36 | 37 | 13 | Variable (41/9) |
| Â | Â | Â | Â | -48 | 35 | 5 | Variable (38/12) |
Rep17-8 | 21 | 29 | Rep17-8 | -15 | 22 | 28 | -- |
| Â | Â | Â | Â | -24 | 0 | 50 | All susceptible |
Rep727-1 | 0 | 50 | Rep727-1 | -20 | 0 | 50 | All susceptible |
Wt+b | 0 | 50 | Wt+ | Â | 0 | 50 | All susceptible |