Phenotypic diversity of apricot cultivars derived from of Shalakh variety

The article presents the results of the pomological study of the cultivars of apricot derived from of Shalakh variety. The results of the analysis showed the presence of prevailing features of transmitted offspring from the desired variety. The best inheritability of the features of the Shalakh was traits of symmetry of fruit and stone (100%), form hole shape of stone (100%), shape of apex of stone (100%), keel character of stone (100%), depth of stalk cavity of fruit (88.9%), shape of stone base (88.9%), stone thickness (77.8%), lateral ribs type of stone (77.8%). The oblongness of the fruit and stone has poor or almost is not transmitted to the offspring from the Shalakh

Analysis of the variability of the quantitative traits of the generative shoot of two white-flowered carnation species (

The paper presents the results of assessing the quantitative traits of generative shoots of two white-flowered carnation species from four geographically isolated points: Dianthus awaricus (Oboda, Khvarada) and Dianthus fragrans (Khindakh, Charoda). Comparative analysis showed that, in general, the average values of most morphological characters are higher in D. fragrans, and the width of the petal and the number of lobe denticles are higher in D. awaricus. According to the results of two-way analysis of variance, the greatest contribution to the differentiation of species according to the relative components of variance (h2) is made by the traits “number of serrature on a petal” (73.2%), “cup length” (64.7%) and “petal index” (45.8%); unreliable traits (0.0–1.2%) – “flower length”, “flower diameter”, “flower mass” and “internode index”. Growing conditions significantly affect the characteristics of the apical flower: length (53.6%), diameter (40.1%) and its mass (46.3%). Squares of Mahalanobis distances showed the similarity of D. fragrans cenopopulations and significant isolation in D. awaricus, which is possibly associated with significant differences in the complex of ecological-cenotic conditions and possible microevolutionary processes occurring in highly isolated populations. Between the two species, there is a clear separation in space of the two roots of canonical analysis and complete self-identification according to the classification matrix. Such studies contribute to the identification of similarities and differences between closely related species in contrasting environmental conditions

The structure of variability of traits of seed productivity of

As a result of the experimental studies, results were obtained on the variability of the traits of seed productivity of the narrow-local endemic of Dagestan – Allium charadzeae under various conditions along the altitude gradient. Analysis of the data obtained revealed significant differences in the indicators of seed productivity of individuals. The actual seed productivity is significantly inferior to the potential, which indicates a low degree of realization of the potential for seed formation in mountainous conditions. With an increase in the height above sea level of the experimental plots, the absolute indicators of traits of seed productivity decrease (the number of fruits in the umbrella from 14.9 to 8.5, the number of flowers in the inflorescence from 24.7 to 12.1, the number of seeds in the umbrella from 26.6 up to 19). At the same time, the relative indicators, the percentage of fruit blossoming from 60.5 to 71.2 and the coefficient of seed production from 0.17 to 0.27 increases. As a result of the analysis of variance, a significant influence of the conditions of the year and altitude above sea level on the studied characteristics was revealed

Dynamics of the growth processes of

The paper presents the results of assessing the dynamics of growth processes 364 seedlings of 16 apricot samples under conditions of a critical altitude level for them in Dagestan (1900 m). A comparative study of apricot samples showed that during the growing season, annual seedlings form a small height of the main shoot (18.7–28.7 cm), subramose (0.4–2.7) and leafiness (14.7–23.6). Analysis of the relative dynamics of shoot growth showed that the maximum growth was observed in May-June (62.8–95.7%) and low in July-September (1.0–24.5%). A reliable correlation was established between the relative growth of the studied samples and their winter hardiness, namely, the higher the relative increase in July-September, the lower the winter hardiness. The correlation in MayJune was -0.77**, and in July and September 0.62* and 0.64 **, respectively. The experiment showed the information content of studying the growth of shoot length as a diagnostic feature in assessing the winter hardiness of apricot seedlings in the mountainous conditions of Dagestan

Variability of Morphological Traits of the Generative Shoot of

The paper presents the results of studying the variability of the morphological traits of the generative shoot Matthiola caspica (Busch) Grossh. in Piedmont Dagestan. The material for the study was the life processes of M. caspica of three cenopopulations: Buynaksky (Talgi, 270), Suleiman-Stalsky (Kasumkent, 410 m) and Tabasaransky (Maraga, 520 m) areas. The greatest contribution to the differentiation of cenopopulations by individual components of dispersion in the traits “length inflorescence” (39.9%), “length vegetative features” (38.5%), “number flowers” (37.1%) and index trait “density inflorescences” (16.5%). The distinctions revealed as a result of the discriminates analysis make it possible to select diagnostic characters that introduce specific differences in M. caspica cenopopulations within the Piedmont floristic region. The total accuracy of the classification matrix for the three studied cenopopulations was 82.2%, where the “Maraga” cenopopulation (90.0%) is highly self-identical

DISTRIBUTION DYNAMICS OF ZOOPLANKTON IN TYULENIY ISLAND WATERS OF THE CASPIAN SEA

Aim. It is not possible to study the mechanisms of formation and functioning of the Caspian coastal ecosystems without analyzing the hydrobiological situation of the surrounding water area as a whole. In this regard, the main objective of the research is to study the biodiversity and the quantitative assessment of the zooplankton communities of the coastal waters of Tyuleniy Island and its lagoon areas. Methods. Zooplankton samples were selected seasonally using quantitative methods in order to assess the hydrobionts and current recommendations for material processing. This work represents a continuation of our research launched in 2015 in the coastal area of Tyuleniy Island and its inner lagoon. The qualitative, quantitative and seasonal nature of the distribution of zooplankton in the investigated area of the sea in modern conditions was described. Results. It is shown that the open areas of the island represent a rich taxonomic structure and high density, consisting of a mixed freshwater and brackish-water hydrobiont complex. Conclusions. In general, the zooplankton complex of the Tyuleniy Island water area is a fairly stable ecosystem with a well-developed plankton community. However, for a more complete assessment of its state, seasonal dynamics, and potentials of its food supply for the fish population in the water area, long-term comprehensive monitoring studies are needed

Catalogue of herbaceous plants of the Mountain Botanic Garden

The Mountain Botanic Garden of the Dagestan Scientific Center of the Russian Academy of Sciences was established in 1992. The Garden has two experimental bases – Gunibskaya, with an area of 31,6 hectares (1600–1950 m above sea level) and Tsudakharskaya, 10 hectares (1100–1250 m). The catalogue contains a list of herbaceous plants represented in the collections of the Botanic Garden on these bases. The most representative collections are medicinal and essential oil, ornamental, rare and endangered plant species

Catalogue of wood plants of the Mountain Botanical Garden

The unique scientific installation "System of experimental bases of the Mountain Botanical Garden of the Dagestan Scientific Center of the Russian Academy of Sciences" includes two experimental bases (EB): Gunib EB - 30 ha in area, located at the Gunib plateau (1600 - 1950 m above sea level), Tsudakhar EB - 10 ha in area, located 2 km away from the village of Tsudakhar (1100-1250 m above sea level). Collections of the experimental bases include woody plants from the Northern Hemisphere, including resource, rare and endemic flora of the North Caucasus and Dagestan. The catalogue has been compiled on basis of the plant lists prepared by the supervisors of the Mountain Botanical Garden Laboratory of Woody Plants Introduction and Genetic Resources. Currently, the collection of the Mountain Botanical Garden includes 1260 taxa of woody plants: 439 species, 19 subspecies, 239 population forms and 559 varieties, 139 genera, representing 58 families. The following genera are the most widespread, according to their type and species variety: Malus (167 taxa), Pyrus (78), Armeniaca (65), Sorbus (59), Lonicera (53), Cerasus (46), Rosa (43), Juniperus (43), Rubus (41), Acer (37), Ribes (33). The collection includes 22 species of woody plants included in the Red Books of Russia and Dagestan

"Flora of Russia" on iNaturalist: a dataset

The "Flora of Russia" project on iNaturalist brought together professional scientists and amateur naturalists from all over the country. Over 10,000 people are involved in the data collection.Within 20 months the participants accumulated over 750,000 photo observations of 6,853 species of the Russian flora. This constitutes the largest dataset of open spatial data on the country’s biodiversity and a leading source of data on the current state of the national flora. About 85% of all project data are available under free licenses (CC0, CC-BY, CC-BY-NC) and can be freely used in scientific, educational and environmental activities

"Flora of Russia" on iNaturalist: a dataset

The "Flora of Russia" project on iNaturalist brought together professional scientists and amateur naturalists from all over the country. Over 10,000 people are involved in the data collection.Within 20 months the participants accumulated over 750,000 photo observations of 6,853 species of the Russian flora. This constitutes the largest dataset of open spatial data on the country’s biodiversity and a leading source of data on the current state of the national flora. About 85% of all project data are available under free licenses (CC0, CC-BY, CC-BY-NC) and can be freely used in scientific, educational and environmental activities