Sîromeatnicov, IuliaCotenco, EugeniaPaladi, DanaBrezeanu, PetreAmbărus, Silvica2025-09-042025SÎROMEATNICOV, Iulia; Eugenia COTENCO; Dana PALADI; Petre BREZEANU and Silvica AMBĂRUS. Variability and equality of biochemical qualitative characteristics varieties and lines new tomato obtained in vitro. In: International Congress of Geneticists and Breeders of the Republic of Moldova: Materials Proceedings, 12-th edition, Chisinau, September 17-18, 2025. Chisinau: Editura USM, 2025, pp. 447-453. ISBN 978-9975-62-897-6. Disponibil: https://doi.org/10.53040/cga12.66978-9975-62-897-6https://doi.org/10.53040/cga12.66https://msuir.usm.md/handle/123456789/18620In the agrarian sector, lines, varieties, which had high uniformity, distinctiveness and stability of fruit productivity and quality in different environmental conditions, were of particular importance. The most important trend in the strategy of plant breeding at the stage of adaptive intensification in agriculture was combining the resistance of the varieties to the stress- producing abiotic factors of the environment with high levels of fruit productivity and quality. The determination of the genetic complex of quantitative characters, including drought resistance, hindered the success of the breeding process, the purpose of which was to create genotypes combining many valuable characters. As a result of distance hybridization, interest for the breeder also presents the spectrum of genetic variability, which increases the efficiency of genotypes selection with high productivity and increased resistance to environmental stressors. One of the main tasks of amelioration was grandiose blending in the same variety of high productivity and resistance to stress factors (drought).entomatolinesvarietiesvariabilityproductivityArticle