2016 Fiscal Year Final Research Report
Three dimensional analysis of apoplastic water transport in stem of Criptomeria japonica
| Project/Area Number |
26450233
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Wood science
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| Research Institution | Kyushu University |
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Principal Investigator |
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| Co-Investigator(Renkei-kenkyūsha) |
YAMASHITA MICHIRU 兵庫県立工業技術センター, 主任研究員 (20470263)
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Keywords | スギ / 心材 / 辺材 / 水移動 |
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| Outline of Final Research Achievements |
In Cryptomeria japonica which is an important afforestation tree species,the heartwood moisture content largely varies among individuals. However, it is not sufficiently understood about the origin of water, movement pathway and movement accumulation mechanism which determine the moisture content of the heartwood.
In this study, we analyzed the apoplastic pathway of water accumulation in the heartwood of C. japonica, and analyzed the distribution of sapwood and heartwood at a certain tree height in tissue level.
The number of annual rings in sapwood declined as the trunk height increased. On the other hand, the radial distance from the bark to the heartwood did not change in each height. This result shows some annual rings have heartwood at the upper part and have sapwood at the lower part, and suggest the existence of an axial water movement pathway not via the annual ring boundary.
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| Free Research Field |
木材組織学
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