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Official Journal of the Japan Wood Research Society

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Table 2 Presence of G-layer, basic density, vessel frequency, and lignin content on the upper and lower sides of samples

From: Relationships between tree size and reaction wood formation in 23 Japanese angiosperms

Tree sizes Codes G-layer Basic density (g/cm3) Vessel frequency (No./mm2) Lignin content (%)
UP LP UP/LP UP LP UP/LP UP LP UP/LP
Arbor Ar-1 0.59 0.54 1.08 94 178 0.53 21.8 28.7 0.76
Ar-2 + 0.42 0.42 1.00 58 139 0.42 22.4 30.2 0.74
Ar-3 0.59 0.58 1.01 63 96 0.66 24.2 26.4 0.92
Ar-4 + 0.58 0.55 1.07 37 71 0.52 20.2 31.3 0.64
Ar-5 + 0.62 0.63 0.98 15 81 0.19 20.3 28.7 0.71
Ar-6 0.51 0.45 1.13 124 138 0.90 24.1 27.2 0.89
Ar-7 + 0.50 0.54 0.94 163 229 0.71 23.7 26.7 0.89
Mean     1.03    0.56    0.79
Subarbor Su-1 + 0.60 0.54 1.12 204 323 0.63 21.6 31.1 0.69
Su-2 0.61 0.59 1.03 198 355 0.56 29.4 30.0 0.98
Su-3 0.72 0.72 1.00 167 233 0.72 23.8 26.0 0.92
Su-4 0.53 0.54 1.00 146 351 0.42 23.1 24.9 0.93
Su-5 0.47 0.45 1.04 69 135 0.51 23.4 27.3 0.86
Su-6 0.48 0.49 0.97 27 48 0.56 25.6 28.1 0.91
Su-7 0.64 0.62 1.03 96 127 0.75 25.4 30.0 0.85
Mean     1.03    0.59    0.88
Shrub Sh-1 0.50 0.55 0.91 110 120 0.92 38.2 37.9 1.01
Sh-2 + 0.56 0.59 0.95 279 255 1.09 20.5 26.3 0.78
Sh-3 0.44 0.46 0.95 101 107 0.94 20.2 26.3 0.77
Sh-4 0.62 0.65 0.96 366 398 0.92 33.8 30.4 1.11
Sh-5 + 0.52 0.54 0.97 45 35 1.28 21.8 24.4 0.89
Sh-6 0.61 0.53 1.15 228 266 0.86 26.3 31.9 0.82
Sh-7 0.58 0.59 0.97 307 348 0.88 36.0 34.8 1.03
Sh-8 0.49 0.50 0.99 316 518 0.61 36.6 37.7 0.97
Sh-9 0.50 0.45 1.13 489 526 0.93 26.2 32.3 0.81
Mean     1.00    0.94    0.91
  1. Code refers to Table 1; Ar, arbor; Su, subarbor; Sh, shrub; LP, lower side; UP, upper side; “+” and “−” in G-layer indicate presence and absence of G-layer, respectively