Impact of LC and FAS alleles on cross-section fruit morphology traits in tomato (Solanum lycopersicum L.) germplasm

VAZQUEZ, D.V.; PEREIRA DA COSTA, J. H.; CAMBIASO, V.; GODOY, F.N.I.; RODRÍGUEZ, G.R.

Congreso; XLII Congreso de la Sociedad Española de Genética; 2021

Sociedad Española de Genética

The LOCULE NUMBER (LC) and FASCIATED (FAS) are major genes that influence shape, size, and locule number in tomato fruits. Most fruit morphological studies focus on longitudinal section traits. The objective of this study was to characterize the impact of LC and FAS alleles on cross-section fruit morphology traits in tomato germplasm. A total of 183 cross-section fruit images from tomato accessions (n=1145) were download from https://solgenomics.net. The images were analyzed with Tomato Analyzer 3.0 (1). The evaluated traits were: perimeter (P), area (A), maximum width (MW) and height (MH), thickness (PT) and area (PA) of pericarp, and lobedness degree (LD). The locule number (LN) was visually counted. The LC and FAS data for the subset were available (2). Broad-sense heritability and phenotypic correlations were calculated. A principal component analysis (PCA) was performed. The relative frequency distribution for alleles at LC and FAS genes (LC/FAS when carrying mutated allele for both genes, lc/fas when carrying wild allele for both genes, and LC/fas, or lc/FAS respectively) for LN and LD ranges were evaluated. The broad-sense heritability was significant (p