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Journal of Environmental Biology

pISSN: 0254-8704 ; eISSN: 2394-0379 ; CODEN: JEBIDP

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        Abstract - Issue 2 2012, 33 (2)                                                                                                             Back



nstantaneous and historical temperature effects on a-pinene

Variation in wood fibre traits among eight populations of

Dipterocarpus indicus in Western Ghats, India

 

Author Details

 

A.G. Devi Prasad

(Corresponding author)

Department of Studies in Environmental Science, University of Mysore,?? Manasagangotri,

Mysore - 570 006, India

e-mail: envimys2009@yahoo.com

Nageeb, A.Al-Sagheer?

Department of Studies in Environmental Science, University of Mysore,?? Manasagangotri,

Mysore - 570 006, India

 

 

 

Publication Data

Paper received:

29 September 2010

 

Revised received:

14 October 2010

 

Re-revised received:

03 March 2011

 

Accepted:

21 April 2011

 

Abstract

Wood elements and anatomical ratio of Dipterocarpus indicus were studied to evaluate variation among populations and to recommend for end selection. The variation of wood element [fibre length (FL), fibre diameter (FD), lumen diameter (LD), cell wall thickness (CWT), double wall thickness (DWT), and lumen volume (LV)] and anatomical ratio [fibre lumen area (FLA), slenderness ratio (SR) and runkel ratio (RR)] were investigated in a girth class of 100 - 120 cm among eight populations of Dipterocarpus indicus in Western Ghats, India. The study revealed a significant variations in FL (0.2426), FD (4.7019), LD (3.1689), CWT (2.7104), DWT and (5.4298) among populations. The variations in anatomical ratios were significant among populations except in case of LV. The causes of variations among populations in their wood traits were attributed to the site factors. The interaction between genetic makeup of wood traits combined with effects of edaphic, local and regional climatic conditions reflect the amount of variation among populations. The highest coefficient of variation (CV %) for FL, FD, CWT and DWT was recorded in population of Gundya whereas low coefficient of variation were recorded in the population of Makuta (FL), Devimane (FD, CWT and DWT), and Sampaje (LD). The wood of Dipterocarpus indicus was found undesirable for pulp wood but can be utilized for plywood timbers.

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Key words

Anatomical ratio, Dipterocarpus indicus, Fibre properties, Locality factors, Population variation

 

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