Biodiversity of wild relatives of Cataegus were studied in North-West region
of Damascus countryside located between latitudes 33.36 -33.58 N and
longitudes 35.58-36.39 E including 7 sites and 21 subsites ranging from
Zabadane to Alnabk. Results s
howed that the most of the individuals in the
search area belonging to C. azarolus and var. aronia and rare individuals ere
found to belong to C. monogyna. The study on the level of intraspecific
variability showed the presence of of three taxanomic groups, each had been
characterized with morphological and environmental qualities.The study also
pointed to the where of these species and their different types are located and to
the exist of corrlation between environmental factors and morphological
variables.
This study was carried out to determine the total content of flavonoids of dried and
fresh hawthorn flowers and leaves in water and hydroalcolic extracts. The method of cold
and hot maceration was used to prepare these extracts. The active compound
s which were
found in these extracts were detected by many chemical reactions. The results of these tests
showed that the extracts contain: phenols, flavonoids, and saponins.The total content of
flavonoids was determined using spectrophotometric methods by forming complex with
aluminum chloride and measurement absorbance at 510nm, it has been shown that quantity
of flavonoids in dried samples ranges from 0.16 to 1%, while it's quantity in fresh samples
0.026- 0.18%.
