عنوان مقاله [English]
Populus euphratica is distributed naturally in vast regions of Iran. It is a native species in arid and semi arid of the country. Drought and salinity tolerance is one of the most important characteristics of P. euphratica. Geographical and climatic differences in P. euphratica distribution have caused morphological and genetical differences among the tree populations. Soil texture was sandy, sandy loam and loam. The electrical conductivity (EC) value ranged from 1< up to 30 mS.cm ¹ and pH value ranged from 7.3-8.8. Collection of germplasm resources was established with the planting of 22 provenances from superior trees in Karaj Research Station. The height growth diameter and height were related to the Hamidiyeh, Ramhormoz, Tafresh and Kerman provenances. Gherekhlar, Mahneshan and Jolfa provenances had the lowest growth values. Due to the limitation of fast growing tree species in dry and semi-dry regions with saline and alkaline soils, plating of P. euphratica provenances and its hybrids could be of interest to the farmers of these areas.