Híbridos e linhagens de tomateiro rasteiro avaliados por técnicas de fenotipagem por imagem

Abstract

The search for new alternatives capable of optimizing the evaluation of tomato experiments in the field is necessary. There are reports of image phenotyping in several plants, except for tomato. The objective of this study was to evaluate the agronomic potential of tomato hybrids and strains using vegetation indices. Two groups of genotypes were used - Hybrids versus lineages- being, nine lineages, thirty-six hybrids, recurrent genitor UFU 57 and a commercial hybrid (cv. Vitalino 32). There were evaluated: average weight, transverse diameter, longitudinal diameter, pulp thickness, number of lobules, concentration of soluble solids, β-carotene, and lycopene; and vegetative development analysis by means of vegetation indices obtained from images collected by remotely piloted aircraft (RPA). The data were analyzed using test of means, multivariate analysis for genetic dissimilarity. The vegetation indices were able to distinguish differences between strains and hybrids. The results obtained showed that the hybrids presented greater vegetative vigor associated with greater agronomic potential. Using images to evaluate tomato germplasm can aid field evaluations.