Recently, the importance of studying the biodiversity of the Vitaceae Juss family. increases markedly, while new data appear on the gene pool of cultivated and wild-growing grapes Vitis vinifera L. Modern methods of analyzing the polymorphism of populations of grape plants, both wild-growing and cultural, are actively used. According to the literature, a number of studies have been conducted in the Russian Federation to study native varieties and wild forms of grapes in the Crimea, Dagestan, along the banks of the Don and other regions, but there is very little information about Kuban wild and ancient forms of grapes. The article presents the results of a study of wild forms of the genus Vitis L., growing in places of ancient human settlements on the territory of the Utrish State Nature Reserve of the Krasnodar Territory. For the first time, ampelographically and genetically samples of isolated populations of wild grapes growing on the territory of the Utrish State Nature Reserve have been studied and described. Several habitats of wild grapes, presumably belonging to the Vitis vinifera ssp species, have been studied. Silvestris Gmel. or its variants var. Tipica Negr. - typically wild forest grapes. A detailed description of phytocenoses in which the studied plant forms grow is carried out. Ecological and geographical characteristics of their habitats are given. Samples were taken for further genetic analysis. DNA-marker analysis of plant genotypes by microsatellite loci VVMD27, VVMD5, VS2, VrZAG79 recommended for genotyping of grapes was performed. It was shown that some of the samples are polymorphic to each other, while others are genetically close. When analyzing genotypes, rare alleles were detected for the analyzed SSR loci.
The problem related to providing consumers with high-quality electricity, the principle of operation of smart grid and their new technologies, as well as the expected results from the implementation of smart grid is considered.
The issue of grape plants adaptation to current and future climate changes is acute. Agrobiological records conducted in vineyards at the beginning of the growing season show the possible productivity by the values of the fruitfulness coefficients (k1 and k2). The adaptation of plants is higher in varieties with high values of the fruitfulness coefficients, so it is important to determine their relationship with the weather conditions of the territory. The aim of this work was to study the influence of weather conditions in the south Russia on the grapes fruitfulness coefficients of thirteen Vitis Vinifera varieties of domestic breeding AZESVW and NCZSRIHV for the period 2007-2020 by the method of correlation analysis. A large relationship between the parameters of fruitfulness k1 and k2 with the temperature of the previous year (especially with the minimum air temperature and temperature range), and a smaller one with the characteristics of moisture availability, was revealed. The influence of winter meteorological conditions was noted in the correlation analysis of all the data, for individual varieties, due to frost resistance, the dependence was not significant. In general, there is a variety-specific correlation.
Investigations of heat transfer between concrete and the air under conditions of free and forced convection are necessary for planning measures to regulate the thermal regime of massive blocks in hydraulic structures.Free Convection. In preparing a block for concreting, when the formwork must be removed before setting up the heated tent, it is necessary to determine the allowable time that the surface to be uncovered can be under the effect of low air temperatures. During heating of the base it is necessary to determine the duration of maintaining positive temperatures in the tent. In both cases heat transfer will occur under conditions close to free convection.In the case of free convection the relation between the Ntmelt, Prandtl, and Grashof numbers is expressed by the following power function [1]: Nu = B (Gr Pr) n.Here and henceforth the following notations are used: a c is the coefficient of heat transfer by convection, kcal/ (m 2. h. ~ I is the characterL~tic linear dimension, m; T is time, h; v is the velocity of the air flow, m/sec; t w is the surface temperature of the concrete wal~ ~ tf is the ambient air temperature, ~ }, is the coefficient of thermal conduction, kcal/(m 9 h-~ v is the coefficient of kinematic viscosity, mZ/sec; qg is the coefficient of dynamic viscosity, kg/(m-sec); a is the coefficient of thermal diffusicity, mZ/h; q is the acceleration of gravity, m/sec2; B is the coefficient of thermal expansion, I/~ Nu is the Nusselt number; Re is the Reynolds number; Gr is the Grashof number; Pr is the Prandtl number.
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