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Elucidation of the participating mechanism of boron and boron compounds to the tree physiology and wood preservation

硼及硼化合物对树木生理和木材保存的参与机制的阐明

基本信息

批准号：
15580150
负责人：
MINATO Kazuya
金额：
$ 2.05万
依托单位：
Kyoto Prefectural University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2003
资助国家：
日本
起止时间：
2003 至 2004
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-15580150/
关键词：
kurogaki (blackened portion of persimmon)boron ebony heartwood formation black-heart of sugi adhesion tissue aloeswood 異常材カキノキ ICP分析腐朽

项目摘要

The boron contents in the blackened Japanese persimmon (kurogaki) and heartwood of ebony (Diospyros ebenum), and further those in the leaves and stems of young persimmon trees, which were grown under the control of boron content in fertilizer, were investigated in the first year (2003) of this project. It was found that there is a significant difference of boron contents between normal portion of all persimmon samples (boron content<10 ppm) and blackened portions (several tens ppm). Also for ebony, a clear difference between heartwood and sapwood was observed, which suggests the participation of boron to the heartwood formation. In the fertilizing test, the young persimmon tree grew soundly under the boron concentration less than ten times of the standard (54 ppm), however above 100 times of the standard, the injury due to excessive fertilizing of boron appeared. The boron contents of the injured stems and leaves were same level of the blackened portion of persimmon xylem.In the 2nd te … More rm of the project (2004), the relationships between boron content and heartwood formation, formation of abnormal tissue (i.e. black-heart in sugi (Cryptomeria japonica)), and adhesion tissue in aloes wood were investigated. For 13 species of Japanese and tropical hardwood and 2 species of softwood, significant difference in boron content was found between heartwood and sapwood. Exceptionally high boron content in the sapwood of inuenju (Maackia amurensis) suggested the contribution of wound by insect. The participation of boron to the black-heart of sugi was not found, because the boron content did not differ between normal heartwood and black-heart. Concerning the aloes wood, a part of sample showed high boron content suggesting the participation of boron to the formation of adhesion tissue for the recovery of injury.From these results, the blackening found in Diospyros genus is a unique phenomenon, and the mechanism of the formation of blacken portion is interesting in connection with the preservation of wood. Less

本项目第一年（2003年）对黑桃和乌木心材的硼含量进行了研究，并进一步研究了在化肥硼含量控制下生长的柿子幼树叶和茎的硼含量。结果表明，所有柿子样品的正常部分（硼含量< 10ppm）与黑化部分（硼含量几十ppm）之间的硼含量差异显著。对于乌木，心材和边材之间也有明显的差异，这表明硼参与了心材的形成。在施肥试验中，在硼浓度低于标准值10倍（54 ppm）的条件下，柿树幼树生长良好，但超过标准值100倍时，就出现了过量施肥造成的伤害。受害茎叶的硼含量与木质部变黑部分的硼含量相当。在本项目第二期（2004）中，研究了硼含量与沉香木材心材形成、异常组织（如杉木（Cryptomeria japonica）黑心）的形成和粘连组织的关系。13种日本和热带硬木和2种软木的心材和边材的硼含量存在显著差异。木边材中硼的含量异常高，表明其为昆虫创面所致。没有发现硼对杉木黑心的参与作用，因为普通心材和黑心的硼含量没有差异。沉香部分样品含硼量较高，说明硼参与了损伤恢复粘附组织的形成。从这些结果来看，在Diospyros属中发现的发黑现象是一种独特的现象，发黑部分的形成机制与木材的保存有关。少