Abstract. In the 21st century, the share of the variety in the formation of the size and quality of the crop will increase from 20-40 to 70 % or more. It is obvious that the role of the variety increases significantly not only in increasing productive, but also medium-improving functions of agrophytocenosis, including soil-improving, phytosanitary, bioenergy, design – aesthetic, etc. A lot of attention is paid to the appearance, texture, taste properties of fruits, which increase their dietary value and overall attractiveness to buyers. Methods. The research was carried out at the experimental site of the Federal Agricultural Research Center of the Republic of Dagestan in 2017–2019. In production conditions, 12 widely used varieties of tomato have been tested in the seedling culture in recent years. The samples were studied using the ACIRO methodology and the State Crop Testing Methodology. Results. Promising varieties with high adaptability and stability in extreme conditions of the flat zone of the republic have been revealed. We have established morpho-anatomical and physiological changes in varieties of stamp forms, which determine their reduced, compared to the unstamable forms of resistance to drought, which significantly inhibit production processes in dry years. The most economic was the cultivation of varieties with high yields of standard fruits - Mariana, Mirage, F1 Andromeda. The cultivation of the Hussar variety cost 1.6 times more than F1 Andromeda. The cost of obtaining 1t standard harvest for other varieties was significantly higher. Scientific novelty is to study the sign of a reduction in the duration of the growing season in the combination of the size and yield of fruits on the biochemical composition, taste and technological, which is overcoming negative bonds, or to achieve a compromise combination. In the process of creating new ones and testing them, these evaluation criteria should be decisive.

Сухие субтропики Южного Дагестана - родина капусты озимой белокочанной, одной из основных культур озимого овощеводства. Здесь издавна занимаются ее возделыванием. Основой возникновения этого направления явился сорт Парижская рыночная. Сорт скороспелый, устойчивый к растрескиванию в условиях зимней культуры, однако не получивший большого распространения ввиду малой урожайности. Поэтому возникла необходимость улучшения и расширения сортимента озимой капусты для данного региона.

In competitive market where vegetable seeds being sold widely by home and foreign companies, it is most important to improve management in seed production branch by the right-selected places where the seed production would be realized. This challenging task is that Russian Federation has various climatic and soil zones with different level of economic state.

On 9 August, 2011 K.K. KAZALIEV, renowned worker of agriculture of Russian Federation, honored economist of Republic of Dagestan, researcher (PhD), director of Dagestan Experimental Station of Vegetable Breeding and Viticulture passed away at the age of 62.

The successful results of the research and efficiency of application of foliar feeding have been shown at the time of cabbage seeds raise with Gibbersib and Carbamid treatments in springtime. These treatments made the flowers and buds develop more rapidly promoting the formation of more branchy plants with numbers of seed pods.