Comparative Wood Anatomy of Four Shrubs from Sarab Region

Document Type : Research Paper

Authors

1 MSc. Student, Wood Biology, Faculty of Natural Resources, University of Tehran, Karaj, I.R. Iran

2 Assistant Professor, Faculty of natural resources, University of Tehran, Karaj, I.R. Iran

Abstract

To understand the compatibility of xylem with dry climates, wood anatomy similarities and
differences of four shrubs were investigated in dry and cold region of Sarab (Azarbaijan sharghi
province). These shrubs were: Pteropyrum olivieri, Rosa canina, Tamarix gallica, and Rhamnus
pallasii, while the wood anatomy of Pteropyrum sp. is reported for the first time, in this research.
After preparing microscopic sections of mature xylem and staining them, wood anatomy of studied
species were reported and compared. The results showed that Pteropyrum olivieri and Rosa canina are
the most similar in terms of wood anatomy while Rhamnus pallasii and Tamarix gallica have the least
similarities with each other. Those anatomical features which compensate the drought stress were
different in these shrubs according to local distribution of studied species; among them was the
occurrence and intensity of spiral thickenings in vessels, the presence of vascular / vasicentric
tracheids, and the size and grouping of vessels. Tamarix gallica which were grown only near the lake
had the least adaptation to drought in its stem while Rhamnus pallasii which could distribute in the
harshest conditions were equipped with the best adaptive traits.

Keywords

References

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Forest and Wood Products
Volume 67, Issue 3 - Serial Number 3
October 2014
Pages 437-451

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