Relevance. Inbreeding is the most widespread method of obtaining starting breeding material and plays a central role in heterosis breeding programs of most crops. Beetroot inbred lines possessing economically valuable characteristics require constant maintenance via self-pollination. However, self-pollination leads to depression of a number of traits. Thorough theoretical studies and practical developments are needed to preserve valuable beetroot lines. We aimed to study the root and leaf rosette variability resulting from beetroot self-pollination. We also investigated the inheritance of monogermity in beetroots.Materials and methods. Experimental work was carried out at the All-Russian Research Institute of Vegetable Growing – branch of the Federal State Budgetary Scientific Institution "Federal Scientific Vegetable Center" (FSBSI FSVC), 2011-202], Moscow Region. The object of the study was inbred beetroot lines originated from beetroots of foreign selection. The research data were obtained via field observations and measurements.Results. It has been experimentally shown that the constant signs of self-pollinated beet lines of 1 year of life are the position and height of the leaf rosette. Stabilization and maintenance of separate fertility at a high level is carried out by selection. A negative correlation was noted between the signs of the degree of separateness and the height of the leaf rosette of the plant, the proportion of the neck of the root crop in its diameter, the mass of the root crop and the proportion of the root crop in the biomass of the plant in the offspring of the fourth generation of the inbreeding. The decrease in the productivity of the seed plant occurs at the beginning of the process of creating self-pollinated lines – in the first generation.

The proper choice of starting material determines the results of the selection. If the starting forms of plants are not fit for crossing and do not match the goals set or the soil and climate conditions available, any selection work may prove futile. The creation of new starting material is based on the study of the existing varieties and the selection of the best biotypes, as well as the assessment of a set of biological and economically valuable parameters of breeding. Inbreeding is the most widely used method of obtaining new starting material, especially homozygous lines, and it plays a key role in heterosis selection programs for the majority of agricultural crops. The use of beet heterosis allows for a significant increase in homogeneity, quality, and marketability of the produce. In 2018-2020, nine samples of red beet starting material were assessed. Using the polycross methods, we assessed the general combining ability of self-pollinated red beet lines across the parameters determining the commercial properties of this root crop: the proportion of the root crop top in its diameter, the share of leaves in the plant biomass, and regularity of shape and marketability. The subject matter of this work is the lines of red beet with round root crops. Research material includes the raw data from field measurements and records. We used the Kestrel F1 hybrid variety released for Central Russia. Field tests were carried out using the uniform procedures set out by the All-Russian Horticultural Research Institute - a branch of the Federal Research Center for Horticulture from Moscow Oblast. At the experimental locations, we used the agricultural practices typical of the region. Using the properties - the small proportion of the root crop top (42.1-47%) and the share of leaves in the biomass (24.1-27.5%), high regularity of root crop shape (up to 85.6%), and marketability (88.3-95.9%) - we determined the following lines: 506 I2, 507 I2.

This article highlights the theoretical foundations of internal state financial control implemented in the Russian Federation. In this aspect, innovations in the legal regulation of the activities of control bodies are considered, in particular, fundamental changes in the provisions of the Budget Code of the Russian Federation concerning the organization of internal state (municipal) financial control are considered. The processes of optimization and structuring of control powers in the field of state (municipal) purchases are considered. The upcoming stages of introducing innovations in the system of internal state financial con-trol are highlighted.