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Сomposition and content of phenolic compounds aboveground organs Pentaphylloides parvifolia growing in the Altai Mountains were studied. It has been established qualitative composition of a complex phenolic P. parvifolia is similar regardless of the plants and habitats. The highest total content of phenolic compounds tend to the plants P. parvifolia with the shortest flight, height and biomass of small plants growing on rocky slopes exposed to anthropogenic load and increasing absolute altitude. There are high values ellagic tannin substances in the total content of phenolic compounds in the above-ground organs P. parvifolia .

A protocol for R. schlippenbachii micropropagation from seeds revealed the high germinating capacity and shallow type of dormancy was developed. Th e effect of cytokinins such as zeatin and thidiazuron (TDZ) on morphogenic potential of R. schlippenbachii seedling was tested. The highest regeneration rate (100 %) was achieved in the presence of 1.0 μM TDZ or 2.5 μM of zeatin in Anderson’s nutrient medium (AM). Th e direct organogenesis occurred both through activation of axillary meristems and differentiation of adventitious buds on explants hypocotyl. The maximum number of shoots per explant was obtained under 1.0 μM TDZ. Th e cultivation of regenerants on hormone-free AM allowed to obtain the elongated shoots and to overcome the anomalies caused by TDZ treatment. The largest percentage of rooting plants was achieved after pulse treatment with 148.0 μM indolyl-3-butyric acid for 4 hours followed by transferring to ex vitro conditions in mixture of peat and sand. Th e results could be included in the program for conservation of this rare polymorphic ornamental species and creation of new varieties on its basis.

Th e native Sorbus aucuparia was the first species of this genus being cultivated at Peter the Great Botanical Garden (Saint-Petersburg, Russia) - uninterruptedly since 1736. There are 104 specimens in modern collection (trees and very seldom shrubs) which belong to 44 taxa. The largest specimens reach 20 m high ( S. aucuparia ) and 55 cm in trunk diameter ( S. intermedia ). The oldest trees ( S. aucuparia , S. hybrida , S. intermedia , S. × latifolia , S. torminalis ) are 75-85 years old. The majority of specimens have been grown from seeds, only few ones being graft ed. Th e most part of species produce fruits and are grown from local seeds. The species from East Asia dominate, followed by species of European origin. The most prominent reserves of further introduction are in flora of China.

Preliminary data on algae of the Tektu River and the waterfall “Shirlak” located on it (the Altai Republic) are given. Algal flora is represented by 63 species (73 specific and intraspecific taxa) from 6 divisions and 29 genera. Ecological and geographical characteristics (geographical distribution, location, salt and pH water reactions and saprobity) are indicated for each species.

Description and distribution of new for Russia species Endocarpon crystallinum J.C. Wei et Jun Yang, known from the deserts of North China and found on the western coast of Baikal Lake in steppe ecotopes on calcareous soil in crevices of limestone rocks and among stones are reported. The species is characterized by a thick epinecral layer, which looks like big whitish pyramidal crystals, maintaining a lamellar, cellular structure, formed by necrotic cortical cells with thick walls; by thick exciple, light in the inner part and brown-black in the outer part; by the absence of true lower cortex, but by the presence of a layer of closely parked spherical medullary cells with brown-black pigmented walls, and by the presence of brown-black rhizohyphal prothallus (weft) and rhizohyphal bundles (not true rhizines). Several rare species, Heppia echinulata Marton et Galun, H. solorinoides (Nyl.) Nyl., Psora in digirkae Timdal et Zurb., Toninia lutosa (Ach.) Timdal, Solorinella asteriscus Anzi and others inhabit together with Endocarpon crystallinum the same ecotopes.

Comparative research of the cell organization of mesophyll in the needles of Pseudotsuga menziesii and 2 Abies species was carried out. Basic spatial shapes of assimilatory cells are distinguished. The system of the mesophyll cell arrangement within leaf space is described. Characteristic features in the structure of needle mesophyll in Pseudotsuga menziesii and 2 Abies species are revealed. It is shown, that at Abies concolor and A. sibirica needles chlorenchyma consists of large cells of the simple form, in mesophyll of leaves Pseudotsuga menziesii oft en enough there are the cells of complex cellular and cellular-spongy form consisting mainly from two, is much rarer - from 3-4 sections.

Features of distribution of model East-Asian species Astragalus membranaceus , Gueldenstaedtia verna , Sсutellaria baicalensis , Sophora fl avescens have been studied. Prediction maps for each species under study have been composed. Modeling with using Maxent approach revealed that the spatial distribution of studied species is infl uenced by the complex of factors connected with mean parameters of temperature. Prediction maps for modeled climate change scenario showed the individual response for each species. Generally, obtained results didn’t reveal the potential decrease of East-Asian species distribution according to moderate climate scenario. Scenario with high increasing of atmospheric CO ₂ concentrations showed the possible decreasing of plant distribution.

Based on original field data alpine vegetation classification and legend of vegetation map were developed. On basis on ultrahigh resolution satellite imagery vegetation map was drawn up. Mapping units are both homo- and heterogeneous. Ratio of forming components were calculated. Five types of vegetation combinations were distinguished. All of them were caused by physical processed. Upper tree line only one subalpine altitudinal vegetation belt are characterized for Tukuringra mountain Range. There are three altitudinal-climatic stripes: sparse birch woodlands, Pinus pumila communities and mountain tundra’s.

For semigumid and semigumid-semiarid highlands of East Sayan we first characterized: one alliance, four associations, two subassociation, two variants relating to the class of ecological-fl oristic classification. At the upper boundary of the forest is dominated by larch woodlands (ass. Carici iljinii - Laricetum sibiricae ass. nova hoc loco). Association presented two variants: Hansenia mongholica and Empetrum nigrum. Variant Hansenia mon gholica distinguished by good drainage conditions of habitats. Flat bottoms mountain hollows subgoltsy altitudinal belt and the upper part of the forest belt of alpine meadows occupied by swamped alpine meadows (асс. Cardamino pratensis - Caricetum stenocarpae ass. nova hoc loco). Yernik tundras (ass. Cladonio stellaris - Betu letum rotundifoliae ass. nov. prov.) are characteristic of subgoltsy altitudinal belt. Lichen tundras (асс. Carici ledebourianae-Cladonietum stellaris ass. nova hoc loco) typical for goltsy and subgoltsy altitudinal belts. Th ey are represented by two subassociations nova hoc loco: typicum and empetretosum nigri . Habitat subassociation typicum wetter. We propose a new alliance Cardamino pratensis - Caricion stenocarpae all. nov. prov., which attributed to the order Violo altaicae - Festucetalia krylovianae and class Juncetea trifi di . Alliance characterizes swampy alpine meadows and meadow-tundras Altai-Sayan mountain region.

The results of yield and nutritional value seasonal changes of the main Artemisia L . forage species in Central Kyzylkum’s pastures have been presented. Four pasture variety involving three Artemisia species - A. diffusa Krasch. ex Polyakov, A. turanica Krasch. and A. juncea Kar. et Kir under different soil conditions has been identifi ed. The maximum yield of Artemisia defined in ephemereta-artemisieta-calligonumeta pasture variety in sandy soils. The texture of stone-gravelly soil is prevents the trends of formation Artemisia’s phytomass. Biochemical composition of Artemisia species is rich in raw protein and its amount decreases from spring to autumn. The indicators exceeding from save load, leading to overgrazing Artemisia pastures has been established.