Table 4.
Model | Factor | Unit | All varieties | ‘Lambertin’ | ‘Modesto’ | ‘Palsteyn’ | Variance |
A, passive bending | Initial leaning cosϕ | – | –0·34 | –0·49 | –0·40 | –0·11 | 0·0260 |
Position of loads p2 | – | –0·71 | –0·85 | –0·56 | –0·72 | 0·0141 | |
Relative load M/D2 | kg cm–2 | –1·36 | –1·45 | –1·42 | –1·19 | 0·0135 | |
Compliance 1/E | 10–9 m2 N–1 | –1·68 | –1·70 | –1·72 | –1·61 | 0·0026 | |
Slenderness (L/D)2 | m2 cm–2 | 1·06 | 0·83 | 1·11 | 1·26 | 0·0318 | |
B, passive uprighting | Previous bending Δγ | – | –0·09 | –0·41 | 0·012 | 0·453 | 0·1230 |
Unloading rate ΔM/M | – | –0·84 | –0·82 | –0·82 | –0·92 | 0·0023 | |
Diameter constancy [D/(D + ΔD)]4 | – | –0·74 | –0·63 | –0·94 | –0·42 | 0·0460 | |
C, active uprighting | Tension wood sin(β/2) | – | –0·22 | –0·39 | –0·13 | –0·14 | 0·0139 |
Slenderness L/(D + ΔD) | m cm–1 | 0·10 | 0·11 | 0·06 | 0·13 | 0·0011 | |
Diameter growth ΔD/(D + ΔD) | – | –0·67 | –0·56 | –0·80 | –0·65 | 0·0095 |