Evaluation of tomato phenological stages passing on multilevel installations “Fitopiramida”

Relevance. Multilevel pipe vegetation installations (MVTU) "Fitopiramida” are designed for hydroponic cultivation of different agricultural crops including tomatoes. Methods. To create F1 tomato hybrids for this technology the assessment of phenological stages passing of tomato lines on "Fitopiramida” MVTU was carried out. 19 breeding lines including 9 cherry tomato lines, 10 large-fruited tomato lines of indeterminate and determinate growth types were tested. These lines were used in various hybridization schemes to obtain F1 tomato heterotic hybrids for "Fitopiramida”. Results. According to the results of the conducted researches in conditions of low-volume technology "Fitopiramida” duration of periods "germination -beginning of flowering” ("G-BF") and "germination - beginning of ripening” ("G-BR") is significantly reduced. In cherry group lines "G-BR” period is shorter by 17.7 days at average, in large-fruited lines by 23-27.3 days at average depending on growth type. The difference in ripening time is more expressed in large-fruited lines; border-grown Kb 183 line began ripening 35 days later. Shorter growing season makes it possible to carry out largest number of crop rotations per year to obtain maximum yield per area unit (in full year use greenhouses). Similar results were obtained in the tests of tomato varieties and F1 hybrids on "Fitopiramida” MWTU in 2019-2020 in terms of phenological stages passing acceleration and earlier fruiting of hydroponic grown tomatoes.