Table III.
Winter survival (percentage) in spaced plantings in a field trial at Elora, Ontario, of transgenic plants of alfalfa clones N4-4-2 and V4-11-3 containing T-DNA from the vector pEXSOD10
| Parent | Vector | n | 1997
|
1998
|
||
|---|---|---|---|---|---|---|
| Spring | Summer | Spring | Summer | |||
| N4-4-2 | Control | 8 | 52 ± 7 | 52 ± 7 | 52 ± 8 | 51 ± 8 |
| pEXSOD10 | 94 | 83 ± 2 | 83 ± 2 | 75 ± 2 | 74 ± 2 | |
| V4-11-3 | Control | 8 | 46 ± 7 | 58 ± 7 | 26 ± 8 | 27 ± 8 |
| pEXSOD10 | 21 | 60 ± 5 | 60 ± 5 | 47 ± 5 | 47 ± 5 | |
The experiment was established in spring 1996, with three blocks each containing three controls and 32 (N4-4-2) and seven (V4-11-3) independent transgenic plants randomly arranged within each block. Values are the least squares means of all transgenic plants ± se. Survival was scored visually as the appearance of green shoots in spring and summer. n is the number of observations (replications × no. of independent transgenic plants minus missing plots) in each mean.