Wood properties and genetic variation in plus-tree clones of Picea glehnii
2008
Nei, M.(Hokkaido. Forest Products Research Inst., Asahikawa (Japan)) | Akutsu, H. | Kita, K.
Studies of ring analysis by X-ray densitometry and spiral grain examination were conducted. Materials were sampled from 31 plus-tree clones of Picea glehnii planted in the seed orchard in Kunneppu. Analyses of variance demonstrated that ring width, earlywood width, ring density, earlywood density and latewood density were significantly different among clones. It was thought that genetic improvement would be possible because of the repeatability levels of ring width and latewood density were high. The mean grain angle was not significantly different among clones, but patterns of variation within stem were different among clones. Repeatability of these characteristics had a tendency to increase with increasing ring number. For the selection of a superior clone, it was suitable to use the outside of the stem.
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