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No.6 (1959/8) >

Title :琉球松材の解剖学的特性について
Title alternative :On the anatomical characteristics of Luchu pine (Pinus luchuensis Mayr) wood.
Authors :諸見里, 秀宰
Authors alternative :Moromizato, Shusai
Issue Date :Aug-1959
Abstract :The study was carried out in order to provide the fundamental data for the Luchu pine by studying the anatomical characters of two sample trees. The results are as follows: 1) The color of wood in spring-wood is yellow-white, and, in autumn-wood, it is red-brown. 2) There are many false annual rings. 3) The tracheid lengths range from 2. 71 to 3.41 millimeters. 4) Some tracheids have bifurcate ends but such tracheids are quite small in number. 5) The gigantic tracheids were rarely observed on the transverse phase: they are greater than the normal tracheids by 1 . 8 times in width and by 2. 8 to 4. 8 times in thickness. 6) The average breadth of tracheids ranges from 36.9 to 48.7 microns in springwood and from 30.8 to 39.3 microns in autumn-wood. 7) The average thickness of cell wall of tracheid is 2. 99 and 6. 72 microns in spring-wood and in autumn-wood, respectively. 8) The ratio between thickness and breadth of tracheids IS between 101 . 03 and 131.71 per cent in spring-wood and, in autumn-wood, it is between 61.83 and 841.09 per cent. 9) The ratio between length and breadth of tracheid is between 61. 82 and 87.95 per cent in spring-wood and between 78.09 and 106.79 per cent in autumn-wood. 10) The ratio between length and thickness of tracheids is between 47.11 and 78.56 per cent in spring-wood and between 99.18 and 173.52 per cent in autumn-wood. 11) The maximum length of narrow rays is 780 microns and the minimum length is 30 microns. 12) Only windowlike simple pits were observed in the cross field of the ray parenchyma: number of the pits on the cross field are generally 1 or 2. 13) The number of resin canals of the tansverse surface ranges from 37.5 to 69.0 per square centimeters. The major axis and the minor axis of resin canals are between 144 and 190 microns and between 123 and 169 microns, respectively. The areas of the resin canal ranges from 15016 to 25389 square microns.
Type Local :紀要論文
ISSN :0485-7828
Publisher :琉球大学農家政工学部
URI :http://hdl.handle.net/20.500.12000/24995
Citation :琉球大学農家政工学部学術報告 = The science bulletin of the Division of Agriculture, Home Economics & Engineering, University of the Ryukyus no.6 p.86 -98
Appears in Collections:No.6 (1959/8)

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