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Official Journal of the Japan Wood Research Society

Table 6 Correlation coefficients between microfibril angle (MFA) or air-dry density (AD) and mechanical properties at each radial position

From: Radial variations of broad-sense heritability in wood properties and classification of load–deflection curves in static bending for six half-sib families of Chamaecyparis obtusa

Factor Radial position MOE MOR W CS
MFA 1st–6th – 0.699 (0.001) – 0.376 (0.124) 0.391 (0.109) – 0.197 (0.447)
7–12th – 0.784 (< 0.001) – 0.205 (0.416) 0.308 (0.214) – 0.690 (0.001)
13th–21st – 0.826 (< 0.001) – 0.501 (0.034) 0.198 (0.431) – 0.396 (0.104)
22nd–34th – 0.803 (< 0.001) – 0.434 (0.071) 0.445 (0.064) – 0.484 (0.041)
AD 1st–6th 0.111 (0.660) 0.341 (0.166) 0.049 (0.847) 0.651 (0.004)
7th–12th 0.294 (0.236) 0.381 (0.119) 0.234 (0.349) 0.649 (0.003)
13th–21st 0.322 (0.193) 0.737 (< 0.001) 0.649 (0.003) 0.787 (< 0.001)
22nd–34th 0.503 (0.023) 0.860 (< 0.001) 0.630 (0.005) 0.829 (< 0.001)
  1. Number of sample trees = 18
  2. MOE modulus of elasticity, MOR modulus of rupture, W bending work, CS compressive strength
  3. The values indicate correlation coefficients
  4. The values in parentheses indicate p-values
  5. The values in bold indicate correlation coefficients with a significance less than 0.05 levels