INVESTIGATION ON TRACHIEDS CHARACTERISTICS OF PINUS TEADA

Pinus teada, which was planted in Pelembera region, shows promising both in growth rate and adaptability. Even though the fiber geometry of P. teada wood in its native growth region is excellent, but for utilization of this wood in pulping, the knowledge of its technological characteristics especial...

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Autores principales:	Ahmad Jahan latibari, Fardad Golbabaei, Mohammad reza Amini
Formato:	article
Lenguaje:	FA
Publicado:	Regional Information Center for Science and Technology (RICeST) 2004
Materias:	PINUS TEADA TRACHIED LENGTH DIAMETER LUMEN DIAMETER CELL WALL THICKNESS EARLY WOOD AND LATE WOOD Forestry SD1-669.5
Acceso en línea:	https://doaj.org/article/2670bbdbd3bb4708bcca9efae46e0cfa
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spelling	oai:doaj.org-article:2670bbdbd3bb4708bcca9efae46e0cfa2021-12-02T01:11:39ZINVESTIGATION ON TRACHIEDS CHARACTERISTICS OF PINUS TEADA1735-09132383-112X10.22092/ijwpr.2004.117550https://doaj.org/article/2670bbdbd3bb4708bcca9efae46e0cfa2004-04-01T00:00:00Zhttp://ijwpr.areeo.ac.ir/article_117550_c3ca9b4ca67aa7ced0e81ad7b5e3a2d6.pdfhttps://doaj.org/toc/1735-0913https://doaj.org/toc/2383-112XPinus teada, which was planted in Pelembera region, shows promising both in growth rate and adaptability. Even though the fiber geometry of P. teada wood in its native growth region is excellent, but for utilization of this wood in pulping, the knowledge of its technological characteristics especially fiber geometry is required.Two trees of this species were randomly selected from Pelembera forests plantation in Gilan and after felling were cut in smaller bolts and transferred to wood &paper research laboratory, research institute of forests and rangelands. Five cross-sections with the thickness of 15 cm were cut from each tree and the cross-sections were used for selection of samples. Fiber geometry measurement samples were prepared from every five annual rings and from each sample, springwood (early wood) and summer wood (late wood) sample were cut separately. Preparations of fiber geometry samples were according to procedure developed by Franklin (1954) and from each sample the dimension of 30 complete and unbroken trachieds was measured.Trachied length, diameter, cell wall thickness and lumen diameter was measured for different elevation in tree and different growth rings in cross-section.Dimension of 3,00 trachieds were measured totally.Average trachied length, diameter, lumen diameter and cell wall thickness of early wood were measured at 3.65mm, 38.97 mm, 28.94 mm and 3.72 mm respectively. Related values for late wood is as follow: trachied length 3.84mm; diameter, 35.54 /lm; lumen diameter, 22.96 mm; and cell wall thickness, 6.29 mn. Average annual growths were measured at 5.66 mm and late wood percentage at 24.13. Felting, flexibility and runkel coefficients were calculated at 97.96, 73.48, and 26.74 respectively. The result of this study indicates that all measured properties increases with increasing the height of tree and from center (pith) toward outer regions (bark). However all the measured values decreased at highest as well as outer locations.Statistical analysis indicated that the difference in measured properties at different heights of trees from center to the bark is significantly different at 1% level.Ahmad Jahan latibariFardad GolbabaeiMohammad reza AminiRegional Information Center for Science and Technology (RICeST)articlePINUS TEADATRACHIED LENGTHDIAMETERLUMEN DIAMETERCELL WALL THICKNESSEARLY WOOD AND LATE WOODForestrySD1-669.5FAتحقیقات علوم چوب و کاغذ ایران, Vol 19, Iss شماره 1, Pp 25-48 (2004)
institution	DOAJ
collection	DOAJ
language	FA
topic	PINUS TEADA TRACHIED LENGTH DIAMETER LUMEN DIAMETER CELL WALL THICKNESS EARLY WOOD AND LATE WOOD Forestry SD1-669.5
spellingShingle	PINUS TEADA TRACHIED LENGTH DIAMETER LUMEN DIAMETER CELL WALL THICKNESS EARLY WOOD AND LATE WOOD Forestry SD1-669.5 Ahmad Jahan latibari Fardad Golbabaei Mohammad reza Amini INVESTIGATION ON TRACHIEDS CHARACTERISTICS OF PINUS TEADA
description	Pinus teada, which was planted in Pelembera region, shows promising both in growth rate and adaptability. Even though the fiber geometry of P. teada wood in its native growth region is excellent, but for utilization of this wood in pulping, the knowledge of its technological characteristics especially fiber geometry is required.Two trees of this species were randomly selected from Pelembera forests plantation in Gilan and after felling were cut in smaller bolts and transferred to wood &paper research laboratory, research institute of forests and rangelands. Five cross-sections with the thickness of 15 cm were cut from each tree and the cross-sections were used for selection of samples. Fiber geometry measurement samples were prepared from every five annual rings and from each sample, springwood (early wood) and summer wood (late wood) sample were cut separately. Preparations of fiber geometry samples were according to procedure developed by Franklin (1954) and from each sample the dimension of 30 complete and unbroken trachieds was measured.Trachied length, diameter, cell wall thickness and lumen diameter was measured for different elevation in tree and different growth rings in cross-section.Dimension of 3,00 trachieds were measured totally.Average trachied length, diameter, lumen diameter and cell wall thickness of early wood were measured at 3.65mm, 38.97 mm, 28.94 mm and 3.72 mm respectively. Related values for late wood is as follow: trachied length 3.84mm; diameter, 35.54 /lm; lumen diameter, 22.96 mm; and cell wall thickness, 6.29 mn. Average annual growths were measured at 5.66 mm and late wood percentage at 24.13. Felting, flexibility and runkel coefficients were calculated at 97.96, 73.48, and 26.74 respectively. The result of this study indicates that all measured properties increases with increasing the height of tree and from center (pith) toward outer regions (bark). However all the measured values decreased at highest as well as outer locations.Statistical analysis indicated that the difference in measured properties at different heights of trees from center to the bark is significantly different at 1% level.
format	article
author	Ahmad Jahan latibari Fardad Golbabaei Mohammad reza Amini
author_facet	Ahmad Jahan latibari Fardad Golbabaei Mohammad reza Amini
author_sort	Ahmad Jahan latibari
title	INVESTIGATION ON TRACHIEDS CHARACTERISTICS OF PINUS TEADA
title_short	INVESTIGATION ON TRACHIEDS CHARACTERISTICS OF PINUS TEADA
title_full	INVESTIGATION ON TRACHIEDS CHARACTERISTICS OF PINUS TEADA
title_fullStr	INVESTIGATION ON TRACHIEDS CHARACTERISTICS OF PINUS TEADA
title_full_unstemmed	INVESTIGATION ON TRACHIEDS CHARACTERISTICS OF PINUS TEADA
title_sort	investigation on trachieds characteristics of pinus teada
publisher	Regional Information Center for Science and Technology (RICeST)
publishDate	2004
url	https://doaj.org/article/2670bbdbd3bb4708bcca9efae46e0cfa
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INVESTIGATION ON TRACHIEDS CHARACTERISTICS OF PINUS TEADA

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