Results of the introduction of tree plants into South Uzbekistan from the North America

The article presents the results of the introduction of woody plants into South Uzbekistan from North America. It is noted that 43 species of woody plants were tested from the Atlantic-North American region. In particular, 1 species were tested from the Appalachian province of this region. Thirty-eight species have been introduced from the province of the Atlantic Lowland, of which 26 are also found in the Appalachian province. The flora of the province of the Atlantic Lowland is much younger than the flora of the Appalachian Province and contains fewer relict and endemic taxa, which is explained by the geological youth of the lowland itself. From both provinces of this area, the vast majority of species are very promising and promising. From the Rocky Mountains, only 3 species have been tested. Although they are endemic to this province, under our conditions they have proved to be quite resilient. They belong to the hemixerophytes. Of the 3 provinces of the Madreana region, 9 species were tested, 6 of them were introduced from the California province. Most of the tested species of this area turned out to be resistant in the conditions of Southern Uzbekistan.