Strength Properties of Discolored Sugi and Hinoki Wood Caused by Japanese Horntail Symbiont Inoculation.

Fujiwara S, Tabata M, Kanagawa Y

doi:10.11519/jjfs1953.83.2_157

Bibliographic Information

Other Title

ニホンキバチの共生菌接種によるスギおよびヒノキ変色材の強度的性質
ニホンキバチノキョウセイキンセッシュニヨルスギオヨビヒノキヘンショクザイノキョウドテキセイシツ

Search this article

Description

The strength properties of discolored sugi (Crvptomeria japonica D. Don) and hinoki (Chamaecyparis obtusa Sieb. et Zucc.) caused by Japanese horntail symbiont (Amylostereum laevigatum) were investigated. The fungus associated with the Japanese horntail were inoculated into the 33-year-old sugi and hinoki and artificial discoloration were caused. Two and eight months later sample trees were felled and the strength properties and anatomical structure were investigated. We used small specimens to evaluate accurately the influence of discoloration. There was no significant difference in the longitudinal compressive and bending strength between sound woods and discolored woods. The tensile strength of the dark boundary of the discolored wood showed low values for specific gravity. It is considered that this is an apparent decrease of strength. Because the substance in cell lumen increases the weight of specimens, as a consequence specific gravity increases, but the strength is not influenced. These results indicate that the discoloration does not have an effect on strength properties of wood.

Journal

JOURNAL OF THE JAPANESE FORESTRY SOCIETY

JOURNAL OF THE JAPANESE FORESTRY SOCIETY 83 (2), 157-160, 2001

THE JAPANESE FORESTRY SOCIETY

Keywords

Details 詳細情報について

Export

Report a problem