Agronomic and Morphological Evaluation of Experimental Tomato Lines Grown under Greenhouse Conditions in Saltillo, Coahuila, México

Abstract

Aims: The objective of this research was to evaluate the agronomic and morphological behavior of experimental lines of tomato under greenhouse conditions, in order to generate new F1 materials. Study Design: The experimental design was a randomized complete block with 16 treatments and four repetitions each, the ANOVA was performed at p≤0.05 and the means test was by Tukey (p≤0.05). Place and Duration of Study: Experimental greenhouse "The Bajío” Buenavista, Plant Breeding Department of the Universidad Autónoma Agraria Antonio Narro. between February 2023 to November 2023. Methodology: 16 genotypes of tomato were evaluated (L1 to L16), through the quantification and determination of morphological and agronomic variable, as well as the physicochemical and nutritional quality of the tomato fruits. Results: The results indicate statistical differences for all the quantified variables evaluated, while the morphological behavior of the lines was variable in most of the evaluated traits. For the yield components, promising lines such as TR-006 and TR-010 were found, which stand out in the number of fruits per plant with 59 fruits, while TR-008, TR-015 and TR-007 are lines that present fruits of greater average weight with 127.4, 115.4 and 100 g respectively. The lines TR-013, TR-016 and TR-006 stand out for producing more kilograms per plant with 3.54, 3.48 and 3.44 kilograms per plant, respectively. For seed production, lines TR-014, TR-013 and TR-003 showed good yield with 162.57, 161.31 and 159.17 seeds per fruit, respectively. Conclusion: The agronomic and morphological behavior of the genotypes was variable in most of the characters evaluated, which indicates genetic variability between the lines, variability that could be used as a source of germplasm for the generation of new materials with high productive potential either as a free-pollinated variety or as hybrids