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Official Journal of the Japan Wood Research Society

Table 5 Boundary between juvenile and mature wood based on radial variation of latewood tracheid length

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

Family ID Sample tree b1j Boundary annual ring number
H2 1 1.42 24
2 – 0.39 22
3 0.79 24
K4 1 1.22 24
2 – 0.43 22
3 – 1.22 22
M5 1 0.84 24
2 – 0.33 23
3 2.93 25
S 1 2.53 25
2 0.81 24
3 0.88 24
S2 1 – 0.94 22
2 – 1.69 21
3 – 1.89 21
T2 1 – 1.81 21
2 – 3.21 19
3 0.49 23
Broad-sense heritability   0.51
  1. b1j, random-effects parameter of the jth family
  2. Tracheid length at every annual ring was estimated by Model II with random-effects parameter b1j
  3. The annual ring number at the boundary was regarded as the annual ring number at which the annual increment of tracheid length became less than 1%