2025-07-042025-07-042023-01-27https://repositorio.ifal.edu.br/handle/123456789/1021Tomato is one of the most important vegetable crops in the world, representing a significant source of employment and income, mainly in Brazilian Northeast, where risks of soil salinity constitute limiting factors for good crop development. Breeding programs for selection of progenies that tolerate this abiotic stress are essential. Then, the objective of this work is to select salinity-tolerant tomato progenies. For the experiment, 400 plants of F3 generation, 400 plants of F2 generation, 60 F1 plants and 60 plants of each parent, that is, the IPA-7 and Yoshimatsu cultivars, totaling 980 plants; for the second experiment, 400 plants of F2 generation, 60 plants of F1 and 60 plants of each parent (Yoshimatsu and IPA-7), totaling 580 plants, at a high level of salinity, in four replications were evaluated. The experiment was carried out in pots for 30 days, with evaluations taking place during 20 and 30 days after transplanting. On evaluation for the first experiment, morethan 50% of generations at 20 days demonstrated that they are tolerant, already at 30 days only the Yoshimatsu genitor showed tolerance, where others were not tolerantg, with variations in notes. For evaluation of the second experiment at 30 days after transplanting, as in the first one, only Yoshimatsu genitor was tolerant and others demonstrated more than 70% of generations not tolerant to saline level. The selection of tomato progenies is indicated from 30 days after transplanting. Through the F2 and F3 generations, dominance of non-tolerant phenotype was observed, indicating that possible salinity tolerance genes are recessive. Through the inheritance study that indicated the action of another recessive gene combined with experimental conditions, it was not possible to select salinity-tolerant progenies.ptEstresse abióticoÁgua salinaSolanáceasAbiotic stressSaline waterSolanaceaeTrabalho de Conclusão de CursoCIENCIAS AGRARIAS