Yuya Takashima

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Growth characteristics [stem diameter (D), tree height (H), and bole volume (V)], stress-wave velocity (SWV), and Pilodyn penetration (P) were measured for 21 seed provenances of 24-year-old teak trees planted in Indonesia to characterize variation in tree growth characteristics, SWV, and P among seed provenances. Broad-sense heritability and correlations(More)
We examined the enzymatic saccharification and ethanol fermentation of the spent media (SMs) from Auricularia polytricha cultivation using wood meals of Falcataria moluccana, Shorea sp., and Tectona grandis. Although the hydrolysis weight decrease and reducing sugar yield were higher in SM of F. moluccana, the ethanol yield was higher in SM of Shorea sp.(More)
Ozone oxidation pretreatment was carried out on spent culture media (SCMs) after Lentinula edodes cultivation to improve fermentable sugar production by enzymatic saccharification. SCM samples treated with ozone for different treatment time under various moisture contents (MCs) were enzymatically saccharified, and hydrolysis weight decrease, reducing sugar(More)
Todomatsu (Abies sachalinensis) is a commercial plantation species on Hokkaido Island, Japan. In the present study, to improve the decay resistance of todomatsu wood, seven families of 22-year-old todomatsu trees were investigated for family diversities in decay resistance of heartwoods against Fomitopsis palustris and Trametes versicolor and(More)
The present study was performed to unravel the mechanisms of systemic acquired resistance (SAR) establishment and resistance signaling pathways against the canker-rot fungus (Inonotus obliquus strain IO-U1) infection in Japanese birch plantlet No.8. Modulation of protein-profile induced by salicylic acid (SA)-administration was analyzed, and SA-responsive(More)
The xylem-maturation process and the effects of radial growth rate on anatomical characteristics (vessel and fibre morphologies) and wood properties (basic density and compressive strength parallel to grain) were studied for 4-year-old Azadirachta excelsa planted in Indonesia. Mean values were 121 µm, 8.1 vessels/mm2, 16 µm, 1.4 µm, 0.33 mm, 0.98 mm, 0.40(More)
The objective of this study is to clarify the relationships between tree sizes and the anatomical, chemical, and physical characteristics of reaction wood. Naturally inclined stems or branches in 23 Japanese angiosperms, including 3 tree sizes at adult trees, 7 arbor, 7 subarbor, and 9 shrub species, were used. The presence of a gelatinous (G-) layer, basic(More)
This study aimed to evaluate radial and among-family variations of wood properties in Picea jezoensis. A total of 174 trees were randomly selected from 10 open-pollinated families in a progeny trial for measuring stem diameter, dynamic Young’s modulus of log (DMOElog), annual ring width (ARW), air-dry density (AD), modulus of elasticity (MOE), and modulus(More)