Comprehensive assessment of biodiversity of dendrological resources of the federal scientific center for agroecology, integrated reclamation and protective forestry of the Russian Academy of Sciences to identify an adapted gene pool of tree species in the southern of Russia

Introduction. Technologies for the introduction and enrichment of the dendroflora of the degraded territories of the arid regions of Russia are aimed at creating an infrastructure that is characterized by environmental friendliness, economy, adaptability and durability, as well as significant social ones. This is achieved by using a variety of taxa of woody plants, as well as a combination of valuable features and biological properties, and should correspond to the intended purpose and features of environmental protection measures.

Objects. Trees and shrubs of natural and artificial plant communities of various botanical families and different geographical origins, including resources of the Federal Scientific Center of Agroecology of the Russian Academy of Sciences (Altai Territory (West Siberian AGLOS – a branch of the Federal Scientific Center of Agroecology of the Russian Academy of Sciences, Kulundinsky District), Volgograd Region (FSC of Agroecology of the Russian Academy of Sciences, Moscow). Volgograd, Nizhnevolzhskaya station for breeding tree species – branch of the Federal Scientific Center of Agroecology of the Russian Academy of Sciences, Kamyshinsky district).

Materials and methods. Multi-criteria complex analysis using the Harrington desirability function method and accentuation of the adaptive gene pool of economically valuable promising plants based on the success assessment developed by N. A. Kokhno on a 5-point scale, and the degree of acclimatization.

Results and conclusions. A scientifically based scheme for the selection, conservation and continuous use of the adapted gene pool of introduced resources of tree species (about 350 species, forms, hybrids and varieties) in the conditions of the steppes of southern Russia has been formed. groups not only showed sufficient stability, but also outstrip native species in their ability to endure a complex of adverse environmental conditions. The Rosaceae, Fabaceae, Berberidaceae, Caesalpinaceae, Cupressaceae, Caprifoliaceae, Oleaceae, and Fagaceae families are widely distributed in the collections of the Federal Scientific Center of Agroecology of the Russian Academy of Sciences. Of the studied objects, it was found that the Rosaceae and Fabaceae families stably bear fruit and are more resistant to drought. These families are undemanding to soils and withstand severe winters (0.9-0.95). These species increase the efficiency of agroforestry plantations due to their decorative and melliferous qualities. The analysis performed shows that the tree plantations of the collection of the Federal Scientific Center of Agroecology of the Russian Academy of Sciences are characterized by varying degrees of adaptation according to the scale of the integrated assessment of the success of introduction. In 63% of the studied plants of the collection of the Federal Scientific Center of Agroecology of the Russian Academy of Sciences, I class of prospects is noted – the most promising. 35% of the presented assortment belongs to the II class – promising. 2% – Ptelea trifoliata L. belongs to the III class according to the degree of adaptation – less promising.

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