Variation of carbon content in the stem of sugi (Cryptomeria japonica D. Don) plus-tree clones
2005
Tamura, A.(National Forest Tree Breeding Center, Ebetsu, Hokkaido (Japan). Hokkaido Regional Breeding Office) | Fujisawa, Y. | Iizuka, K. | Kubota, M.
The variation of carbon content in the stem of 15 individuals representing five plus-tree clones of sugi (Cryptomeria japonica D. Don) was examined. Carbon content in the heartwood was higher than in the sapwood, and tended to be higher in the inner sapwood than in the outer sapwood. Longitudinal variation of carbon content in both heartwood and sapwood tended to decrease with increasing height. Carbon content showed small differences between individuals and between clones, even those of various heights. Carbon contents at 1.2 m above ground level showed significant positive correlation coefficients to the contents at other heights, suggesting that the carbon content of different individuals can be adequately compared by comparing measurements taken solely at this height. Statistically significant differences between clones at this height were found, implying that carbon content in the wood had strong inheritance.
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