[B15-P-01] Density and average ring width in Japanese larch large-diameter timber

○Yuji Okuhara¹, Takahisa Yoshida¹ (1. Nagano Pref.)

[B15-P-02] Comparison of static bending strength properties between heartwood and sapwood in mature wood of Japanese larch large-diameter logs.

○Kengo Ochiai¹, Yoshihiro Hosoo¹, Hiroto Suesada¹, Yuji Okuhara², Makoto Imai², Takahisa Yoshida², Kenta Yamaguchi² (1. Shinshu Univ., 2. Nagano Pref.)

[B15-P-03] Genome-wide association and genomic prediction analysis using variations of wood properties and mechanical property data of Japanese larch (Larix kaempferi).

○Kentaro Mishima¹, Yuichiro Hiraoka², Taiichi Iki¹, Tomonori Hirao¹, Yuya Takashima¹, Soichiro Nagano¹, Yoko Fukuda¹, Akira Tamura¹, Makoto Takahashi¹ (1. Forest Tree Breeding Center, FFPRI, 2. Shizuoka Professional Univ.)

[B15-P-04] Inheritance of wood properties of standing tree from the open-pollinated families in Tohoku Breeding Region

○Taiichi IKI¹, Kentaro Mishima¹ (1. FTBC, FFPRI)

[B15-P-05] Wood properties of the successor stand in the Cypress gene preservation forest set in the Shikoku breeding branch office

○Hisaya MIYASHITA¹, Yuya TAKASHIMA¹, Masahiro MIURA¹ (1. Forest Tree Breeding Center)

[B15-P-06] Among-family variation of radial variation patterns of basic density in 36 hinoki cypress families planted in two progeny test sites

○Yusuke Takahashi^1,2,3, Futoshi Ishiguri², Ikumi Nezu^2,3, Michinari Matsushita¹, Mineko Ohira¹, Akira Tamura¹, Makoto Takahashi¹, Jyunichi Ohshima², Shinso Yokota² (1. FTBC, FFPRI, 2. Utsunomiya Univ., 3. Tokyo Univ. of Agri. and Tech.)

[B15-P-07] Influence of Different initial Planting Tree Density on Wood Property of 10-year-old Japanese Cedar and Japanese Cypress

○Ko NAGASE¹, Tetsuji Hakamata¹, Kiyohiko Ikeda² (1. Shizuoka Pref., 2. Shizuoka Professional Univ. of Agri.)

[B15-P-08] Relation of heartwood moisture content and growth traits in Sugi

○Yuji KURAHARA¹, Koji MATSUNAGA¹ (1. FTBC, FFPRI)

[B15-P-09] Study on method for estimating annual basal area increment using tree-ring cores

○YUDONG SHEN¹, Kayo Kudo¹, Katsuhiko Takata¹ (1. Akita Pref. Univ. )

[B15-P-10] Evaluation of intra-ring density variation using non-linear modeling in first-generation plus trees of Japanese cedar

○Yuya TAKASHIMA¹, Yuko YASUDA¹, Eitaro FUKATSU¹, Kentaro MISHIMA¹, Makoto TAKAHASHI¹ (1. FTBC, FFPRI)

[B15-P-11] Estimation of the early and late wood ratio for different size of Japanese cedar wood flour by using hyperspectral imaging

○Hikaru KOBORI¹, Akari Egawa¹, Kazuya Sakaguchi², Yoichi Kojima¹, Kenji Aoki¹ (1. Shizuoka Univ., 2. Shizuoka Univ)

[B15-P-12] Wood quality degradation in sugi (Cryptomeria japonica D. Don) treated by bark stripping

○Jyunichi OHSHIMA¹, Tetsunori Hamada¹, Ikumi Nezu^2,1, Kazuya Iizuka¹, Futoshi Ishiguri¹, Shinso Yokota¹ (1. Utsunomiya Univ., 2. Tokyo Univ. of Agri. and Tech.)

[B15-P-13] Re-evaluation of wood quality of kiri (Paulownia tomentosa) as a fast-growing tree species (1): Relationship between change in radial growth increment and radial variations of wood properties

○Ikumi Nezu^1,2, Futoshi Ishiguri², Jyunichi OHSHIMA Ohshima², Shinso Yokota² (1. Tokyo Univ. of Agri. and Tech., 2. Utsunomiya Univ.)

[B15-P-14] Re-evaluation of wood quality of kiri (Paulownia tomentosa) as a fast-growing tree species (2): Wood quality of lumber and comparison of bending properties with other wood products

○Futoshi ISHIGURI¹, Ikumi Nezu¹, Jyunichi Ohshima¹, Shinso Yokota¹, Masashi Nihei², Yoshitaki Urushima² (1. Utsunomiya Univ., 2. Kankyou Kougai Bunnseki Center Co.)

[B15-P-15] Comparisons of fiber lengths and microfibril angles of three hardwood species in Japan

○Yu Hirano¹, Hisashi Abe¹, Miho Kojima¹, Kei Asano², Yukihiko Katagiri², Masahumi Ookawa², Naoki Ito² (1. FFPRI, 2. Fukuoka Pref.)

[B15-P-16] Field measurements of drag coefficients of three hardwood species grown in Chiba, Japan

○Jun TANABE¹, Taichi YAMASHITA¹, Tatsuaki KOBAYASHI² (1. Chiba Univ., 2. Fac. Hort, Chiba Univ.)

[B15-P-17] Influence of kiln drying and grain of timber on exudation of rosin in Japanese Cypress

○Naoki Ito¹, Yukihiko Katagiri¹, Kei Asano¹, Masafumi Okawa¹ (1. Fukuoka Pref)

[B15-P-18] Evaluation of internal cracks using artificial intelligence from vibration characteristics of a timber

○Naoki Wada¹, Yuri Hirota¹, Kazuki Shiogai¹, Shigeru Kato¹, Takashi Tamaki², Naoki Sakurai³ (1. NIT, Niihama College, 2. Ehime Pref., 3. Hiroshima Univ.)

[B15-P-19] Changes in chemical structure of hemicellulose in sugi boxed-heart timber with high temperature and high humidity treatment

○Yu Onda¹, Yoshikazu Mori¹, Makoto Kiguchi¹, Kana Yamashita², Yoshiki Kubojima² (1. Nihon Univ., 2. FFPRI)

[B15-P-20] The separation of softwood and hardwood in historical Noh mask by using near infrared spectroscopy

○yohei KURATA¹, Miho KOJIMA², Shohei YAMAGISHI², Hisashi ABE² (1. Nihon Univ., 2. FFPRI)

[B15-P-21] Strength evaluation of kyogi

○Sakura Ishii¹, Hiroya Ohbayashi¹, Takao Momoi¹, Daisuke Ishii², Tsuyoshi Takagi³ (1. Tokyo Univ of Agri, 2. Tokyo Univ of Agric, 3. KOA Corp)

[B15-P-22] Nanostructural observation of water-saturated bamboo with different maturity levels near thermal softening temperature

○Yoko OKAHISA¹, Hiroaki HORIYAMA², Keisuke KOJIRO², Yuzo FURUTA², Tomoya IMAI³ (1. Kyoto Inst. Tech., 2. Kyoto Pref. Univ., 3. Kyoto Univ.)

[B15-P-23] Study on the accumulation state of chemical components in wood cell wall
-Influence of wet and heat treatments on cell wall accumulation-

○Aiko Kimura¹, Rensei Suzuki¹, Yoshikazu Mori², Makoto Kiguchi², Kana Yamashita³ (1. Grad.Bio.Nihon Univ., 2. Nihon Univ., 3. FFPRI)

[B15-P-24] Model experiments for root pull-out from soil

○Mayu Kinoshita¹, Tetsuo Yamaguchi¹ (1. The Univ. of Tokyo)

[B15-P-25] Numerical simulation for bark pattern formation

○Yotaro Uenobu¹, Tetsuo Yamaguchi¹ (1. The Univ. of Tokyo)

[B15-P-26] Development of a new evaluation method and exploration of tree species characteristics for calcium oxalate accumulated in bark

○Ai Yamanaka¹, Tatsuki Kurei¹, Seiya Hirano¹, Yoshiki Horikawa¹, Miki Ueda² (1. Tokyo Univ. of Agri. and Tech., 2. Japan Women's Univ.)

Session information

B Wood quality