Preliminary anatomical study on secondary thickening parts of endemic Dracaena cinnabari balf.fil. from the Soqotra island
The present study investigates anatomical structure of secondary thickening parts (rootstem- branch) of endemic monocot Dracaena cinnabari. The measurement of microscopic structure parameters was carried out using analytical imaging. The differences between vascular bundles were determined. The results show presence of concentric vascular bundles in all investigated plant organs. In general, the parenchyma cells cover majority of the total area (an average of 77%), much less covers xylem (an average of 19%) and phloem (an average of 4%). The results indicate that the plant body is well adapted to sub-tropical climate regimes and specific environmental conditions prevailing on the island such as limited access to soil moisture and sufficient nocturnal dew which is essential for plant growth and survival.