Table 1.
Stem biomass compositiona
| 95% EtOH extractives, % DM |
Glucan, % DM |
Xylan, % DM |
Galactan, % DM | Arabinan, % DM | Mannan, % DM | ASL, % DM | AIL, % DM | Other, % DM | |
|---|---|---|---|---|---|---|---|---|---|
| Control | 8.3 (0.7) | 35.8 (0.4) | 10.8 (0.3) | 3.0 (0.2) | 2.7 (0.5) | 2.0 (0.2) | 4.3 (0.1) | 22.3 (0.3) | 10.9 (1.0) |
| Tension wood, 26 days | 7.4 (0.4) | 37.4 (1.0) | 10.7 (0.5) | 3.0 (0.1) | 2.7 (0.4) | 2.0 (0.2) | 4.2 (0.2) | 22.2 (0.5) | 10.4 (1.4) |
| DCB, 26 days | 9.2 (0.6) | 31.4 (0.4) | 9.8 (0.2) | 3.0 (0.2) | 3.4 (0.4) | 2.0 (0.2) | 4.4 (0.2) | 24.1 (0.3) | 12.6 (1.5) |
| DCB tension wood, 26 days | 8.5 (0.5) | 34.2 (0.8) | 10.2 (0.3) | 3.0 (0.2) | 3.2 (0.4) | 2.2 (0.4) | 4.1 (0.1) | 23.9 (0.5) | 10.7 (1.5) |
| Debarked control | 4.7 (0.2) | 45.7 (0.3) | 15.8 (1.0) | 3.6 (0.6) | 0.3 (0.5) | 0.0 | 4.3 (0.10) | 19.0 (0.5) | 6.2 (2.6) |
| Isolated tension wood, 43 days | 5.6 (0.3) | 52.20 (1.8) | 14.80 (0.8) | 4.6 (0.5) | 0.2 (0.2) | 0.0 | 3.8 (0.1) | 17.1 (0.3) | 1.7 (2.1) |
| Isolated opposite wood, 43 days | 8.7 (2.8) | 39.8 (1.3) | 16.3 (0.5) | 3.1 (0.4) | 0.0 | 0.0 | 4.3 (0.2) | 18.6 (1.2) | 9.1 (2.2) |
aASL, acid-soluble lignin; AIL, acid-insoluble lignin; DM, dry matter; DCB, 2,6-dichlorobenzonitrile. Data represent mean stem biomass composition with standard error of the mean shown in parentheses. For control, n = 6 for tension wood, DCB-treated, and DCB-treated, tension wood-induced trees in the 26-day treatment group; for debarked control, n = 3 for isolated tension wood and isolated opposite wood 43-day treatment group. Unaccounted for mass is recognised here as Other.