عنوان مقاله [English]
The study on poplar clones in Iran began in 1968 with the establishment of the Research Institute of Forests
and Rangelands. However, a few years earlier, research studies were carried out with the import of about 100
poplar clones in 1951 from some European countries. At first, this research was expanded in five provinces
of the country and gradually increased up to 18 provinces with the development of research activities and
facilities. More than 200 projects and subprojects were implemented at the research stations of the provinces.
Compatibility research projects were studied using a large number of exotic clones imported from other
countries along with indigenous clones. In many of the provinces, the wood production of improved exotic
clones was about twice as high as indigenous clones. Of the total number of projects, 60 research projects
aimed at increasing production per unit area and the rest was to increase the development of poplar plantations.
According to the results, some of the P. deltoides clones, such as 69/55 and 77/51, along with P. euramericana
clones with an average production volume of 25-30 m3/ha/yr and a qualitative trunk form could be cultivated
in the northern regions of the country. The present paper discusses poplar clones tested at various research
stations in the northern regions of the country from west to east of the Caspian Sea.