Anatomical variations from pith to bark in Eucalyptus camaldulensis Dehn. wood
Anatomical variations from pith to bark in Eucalyptus camaldulensis Dehn. wood
Ghulam Mustafa Nasir
ABSTRACT
Locally grown eight years old E. camaldulensis wood was studied to observe variation in anatomical properties from pith to bark. Cross and tangential sections of all the sample blocks were prepared under standard laboratory procedures and studied for the frequency and dimensional measurements of different wood elements. Results showed that the fiber length and wall thickness generally increased from pith to bark. The fiber diameter increased progressively upto a distance of 5cm from pith after that it decreased somewhat or remained more or less constant. The vessel diameter was found to increase up to 4cm distance from the pith, reaching to its maximum value beyond that it fluctuated minutely. The frequency of vessels decreased from pith to outward whereas, the frequency of wood rays increased except near the bark where it slightly showed a decreasing trend. The size of wood rays did not show any specific trend of increase or decrease from pith to bark. Maximum impact of the distance from the pith was recorded on fibre length (0.934) and fibre wall thickness (0 915) whereas, the minimum on height of ray (0.00006) as a result of simple linear regression analysis.
Keywords: Anatomical variation, Pith, Bark, Eucalyptus camaldulensis, Wood.
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March 2004
Vol. 54, Iss. 1
