Seed collection of range plant species in order to developing gene bank in Qom area

Agriculture and seed production had a key role in the previous civilization. Nowadays more than 80 percent feed requirements of human societies is depend on plants and their seeds,especially cereals.As population and feed requirements are increasing ,genetic potential of different plants have a great rolls for solving human kind problems. Qom area has species diversity as it has different climate and ecological conditions, so it is considered as a place for field study. At first Qom province was divided into three sections(stepp, semi stepp and arid and semi arid zone).range species lists were prepared for each parts and the valuable species were recognized .According to the species diversity in every section ,some sites were established for conducting this research .Then field study ( seeds gathering and preparing their herbarioum species) was done in special time. Cleaned seeds , following species and their form were sent to Gen bank of Alborz research center. According to the results ,200 samples were gathered related to 35 family ,97 genus and 116 different species during four years.Semi stepp with 139,stepp 38 and semi arid zone with 23 samples were the most important zone,respectively.In the frequency aspect ,the most important families were Geraminae with 46 sample ,papilonaceae 21,umbelliferae 20,salsolaceae 19 and compositae 16 samples.These seeds were gathered during 7 monthes per a year.The best time for this purpose was June to October by considering the phenological stages in range species. Halophyte plantپŒs seeds were gathered on Januarry.Amoung families ,Chenopodiaceae in the Salty lands ,Papilonaceae ,Umbellioferae and Geraminae in the semi stepp were the most important families. The species in Compositae family were found relatively in every sections.Some of species have found in particulary places like Vitex pesudo negundo in Tagharood ,Clematis orientalis and Atriplex griffitii in the Imamzadeh Ismail and Acer monspesulanum in Palangdareh.