Growth characteristics of Populus euphratica seedlings trees in Research Station of Alborz, Karadj

Because of adaptability to different ecological conditions, cross pollination and heterozygosity, Populus euphratica has high genetic diversity. It could have an important role in superior phenotypes selection, inter and intra specific hybridization processes. The aim of this study was identifing and selection of superior phenotypes of P. euphratica and seed propagation for new genotypes and also selection of elite genotypes by evaluation of growth rate and stem form traits. A total of 29 superior trees from 13 natural stands were selected. Seedlings were produced by seed culture in greenhouse condition. Evaluation of seedlings was performed in a nursery of Karaj Research Station (RIFR) during 2011 to 2013. Quantitative and qualitative characteristics including plant diameter, height, survival percent, number of branches, stem form and branch angle with main stem were recorded. Analysis of variance showed significant differences among the seedlings of superior phenotypes with different habitats for quantitative and qualitative characters. Also Duncan multiple range test showed the diameter progenies of the superior trees of Kerman and Khojir, also height progenies of the Kerman, Khojir, Ahvaz and Zabol displayed the most growth values. Finally, some of seedlings had a suitable qualitative and quantitative growth that can be used in next phase study