Table II.
Lignin content in extractive-free stem wood of 6-month-old control and transgenic poplars
| Line | First Culture | Second Culture | Third Culture |
|---|---|---|---|
| % wt | |||
| Control | 18.3 ± 0.6 (100) | 20.1 (100) | 19.2 (100) |
| 70SOMT-1 | 19.2 ± 0.5 (105) | 20.2 (100) | 18.8 (95) |
| 70SOMT-3 | 15.1 ± 0.6 (83) | 16.7 (83) | 16.0 (83) |
| EuSOMT-1 | – | 19.2 (96) | 19.2 (100) |
| EuSOMT-2 | 18.6 ± 0.6 (101) | 20.3 (101) | 18.0 (94) |
Three different cultures were analyzed. Trees were individually analyzed for the first culture (mean ± sd for triplicates). For the second and third culture several trees per line were pooled for analysis. Klason lignin content, which does not include the acid-soluble lignin, is expressed as wt percentage of the extractive-free wood. Normalized values relative to control are shown in parentheses.