بررسی جمع آوری بذور گیاهان مرتعی استان فارس به منظور تقویت و تکمیل بانک ژن گیاهان مرتعی

The Fars province with an area of 13204400 hectares is located on the south west ofIran. Of that the ranglands are 10452475 hectares (80% oftotal) and the forests are 1250000 hectares (10% of total) in area. The diversity of climate has resulted in a great variation in plant species. In order to preserve the Range plant germplasm of the region, seeds were collected from natural habitats the necessary information including vegetative form, seed bearing time, plant community characteristics, topographic characteristics including altitude, longtitude. Latitude, aspect and slop degree of the region were recorded.Having transferred the collected seeds to the Natural resources Gene Bank, they were sifted, disinfected and purified. Soil properties including salinity, depth, infilteration rate time, acidity and color were determined. Meterological data including climatical conditions, means annual percipitaion and temperature were recorded. Weight of 1000 seeds was recorded and Viability of seeds were examined before sending them to the Natural Resources Gene Banks.The seeds were collected from different habitats including stony, lime and saline lands and in the margins of farms, swamps, and roads as well as on mountain of Abadeh, Arsengan, Bavanat, Eghlid, Estahban, Fasa, Lamerd, Mamassani, Marvdasht, Neiriz and Saadatshahr. This shows a high adaptability of the species to different climatic conditions. In this research, more than 600 accessions were collected from different parts of province. They belonged to 215 genera from 36 plant's families. Habitate studies showed that many of the important species have nearly been extincted because the natural resources have been degraded. Therefore these species were only found in isolated places such as tele communication stations and mountaneous areas. Key words: Seed, Natural resources gene banks, Range plant germplasm, Fars province.

کلیدواژه ها:

بانک های ژن ، آتریپلکس لوکوکلادا ، آرناتروم کوتسچی ، بروموس استریلیس ، هوردیوم بولبوزوم ، اوریزوپسیس ، مراتع