Genotypic and environmental effects on morphoagronomic performance in tomato hybrids derived from dwarf male parental lines
2025
Ana Luisa Alves Ribeiro | Gabriel Mascarenhas Maciel | Ana Carolina Silva Siquieroli | Frederico Garcia Pinto | Brena Rodrigues Mota Ikehara | Ana Carolina Pires Jacinto | Lucas Medeiros Pereira | Camila Soares de Oliveira
ABSTRACT The climatic scenario for the production of healthy and sustainable food faces significant challenges and the search for more productive cultivars with resilience is crucial. In this study, fifteen hybrids derived from dwarf male parental lines were analyzed for morphoagronomic performance under field and greenhouse conditions. Initially, through metabolomic analysis of leaflets, efforts were made to identify the different compounds found among the commercial cultivar (‘Santa Clara’), a wild accession (Solanum pennellii), and the dwarf donor parent (‘UFU MC TOM1’). Subsequently, dwarf lines were obtained to produce the fifteen hybrids. The experiments were conducted in two environments in a randomized block design with three replications. The interaction between hybrids and environments was analyzed using the Scott-Knott test 5for means, followed by a GGE biplot analysis. The dissimilarity between hybrids was analyzed by Mahalanobis distance. The acylsugar analysis and metabolomic profiling revealed that the donor parent is similar to the wild accession S. pennellii. The hybrids UFU#7 and UFU#12 exhibited highly compact plants and may serve as a novel technology aimed at optimizing space in field and greenhouse cultivation. ‘UFU MC TOM1’, the donor parent used to obtain the male parental lines of the hybrids, contains several metabolites in its leaflets that significantly differ from those found in the wild accession S. pennellii and the ‘Santa Clara’ cultivar. These metabolites are associated with key metabolic pathways that regulate various types of biotic and abiotic stress, paving the way for further studies focused on developing tomato plants with enhanced resilience.
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