Comparing the Anatomical and Biometrical Characteristics of Heartwood and Sapwood of Elaeagnus Angustifolia (Case Study: Khorasan Province)

Document Type : Original Article

Authors

1 Assistant Professor, Department of wood industry, Technical and Vocational University (TVU), Tehran, Iran.

2 BSc Student, Department of wood industry, Technical and Vocational University (TVU), Tehran, Iran.

Abstract

Investigating changes in biometrics and anatomy of wood species in different parts of tree stems is one of the issues that have been of long interest to researchers in the wood and paper industry. In this study, a comparison of the anatomical and biometrical characteristics of heartwood and sapwood Elaeagnus angustifolia was made. For this purpose, a completely healthy tree native to Khorasan Province, Iran was selected and cut. Test specimens with dimensions of 2 × 2 cm and a length of 3 cm sequentially taken from near the pith (heartwood) to near bark (sapwood) were prepared for biometric and anatomical experiments. Biometric characteristics including fiber length, fiber lumen diameter, fiber diameter and cell wall thickness were evaluated. The results showed that the effect of different parts of the stem on the biometric characteristics of the fibers at the upper level was significant, so that biometric properties had an increasing trend as they moved away from the pith area and neared the bark area. Microscopic studies of wood close to the bark of the elaeagnus angustifolia showed that this species is of the ring porous hardwood species, with distinct growth ring, simple perforation plates and scalariform, alternate intervessel pits and presence of Tyloses.

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Main Subjects

References

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Karafan Quarterly Scientific Journal
Volume 18, Issue 4 - Serial Number 56
Agriculture / Art & Architecture
February 2022
Pages 237-250

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History

  • Receive Date: 09 May 2020
  • Revise Date: 25 February 2022
  • Accept Date: 27 April 2021

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