Study of the Plant Anatomy of Pteropyrum Aucheri From Desert Shrubs

In this research we have been studying the anatomical features of species of Pteropyrum
aucheri,which is a member of Polygonaceae family and the area of the desert shrub in Iran. We chose 3 shrubs randomly from that species. Small parts of the stem samples were prepared in a solution of Formalin, Acetic acid and ethanol and after transfer to the laboratory, rinsed with water. To measure of anatomical features, some of the samples were putted in the solution of Glycerin, water, Alcohol that ratio was 1:1:1. Prior to taking the stage will be quite soft. According to the previous studies on the anatomical characteristics of Pteropyrum aucheri species, it is member of ring-porous with Vessels exclusively solitary and Growth ring boundaries distinct. It has simple perforation plate and intervessel pits opposite. Distribution of 50 to 60 vessels per square millimeter and the average length of the vessel is 92 to 94micrometer. Tyloses and gums has been rarely seen on it. There are a lot of vasicentric tracheid’s. Filer thin-to thick-walled,Axial parenchyma are scanty paratracheal and Axial parenchyma vasicentric and the beginning and end of the growing circles Axial parenchyma in marginal or seemingly marginal bands. Wood rays in tangential sections are exclusively uniseriate. Rays in tangential section are with procumbent, square and upright cells mixed and with present of axial parenchyma and vessel elements storied and also oil or mucilage cells associated with ray parenchyma and with axial parenchyma. And finally with Specific gravity of 0.804 gr/cm3. Its Heartwood basically brown or shades of brown. Ash was white and equal to 3/75 percent.