2021 Fiscal Year Final Research Report

Controlling the "shape" of Sugi cuttings -Study on mechanisms that promote radial growth-

Research Project

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Project/Area Number	19K06159
Research Category	Grant-in-Aid for Scientific Research (C)
Allocation Type	Multi-year Fund
Section	一般
Review Section	Basic Section 40010:Forest science-related
Research Institution	Forest Research and Management Organization
Principal Investigator	Kurita Manabu 国立研究開発法人森林研究・整備機構, 森林総合研究所林木育種センター, 主任研究員等 (40370829)
Co-Investigator(Kenkyū-buntansha)	武津英太郎国立研究開発法人森林研究・整備機構, 森林総合研究所林木育種センター, 主任研究員等 (10370826) 高地伸夫国立研究開発法人農業・食品産業技術総合研究機構, 農業情報研究センター, 主席研究員 (10816903)
Project Period (FY)	2019-04-01 – 2022-03-31
Keywords	さし木苗 / SfM / ３D計測 / バイオマス(体積)計測
Outline of Final Research Achievements	This study was carried out with the aim of clarifying the environmental stimuli involved in radial growth under a controlled environment. The relationship between day length, light intensity, light quality and rooted cuttings growth were investigated, and it was clarified that height growth was promoted under the environment of monochromatic blue light for a long day condition. However, we could not find any environmental stimulus that could significantly promote radial growth under the growing environmental conditions we tried this study. On the other hand, we have succeeded in establishing a technique that enables non-destructive investigation of the diameter and the volume of rooted cuttings by 3D modeling using the SfM method. We are going to continue the analysis by using the developed technology.
Free Research Field	分子生物学
Academic Significance and Societal Importance of the Research Achievements	今回我々は、育成環境の光質条件が、スギ苗木の形状に影響する可能性を示唆する結果を得た。また、3Dモデリングを活用したスギ苗木の非破壊的な体積計測手法を確立できたことで、苗高と根元径以外の視点から、苗木の特徴や形状を評価することを可能とすることに成功した。今後、3Dモデリングを活用し、さらなる環境刺激とスギ苗木の形状の変化について研究を進めていくことで、植栽後、系統の持つ特性を最大限引き出すための苗の形状について、より詳細に解析を行い、再造林時の下刈り等低コスト化に貢献する形状の苗の作出技術の開発を進めていきたい。