Quantitative genetics of developmental stability in flower traits of Solanum rostratum

Within-individual variation in floral organs is an important phenotypic component that can influence fitness in flowering plants. While the genetic basis of this variation has been previously studied, the structure of its G-matrix and evolutionary potential remained unexplored. We characterize the G-matrix of within-individual floral organ variation in Solanum rostratum and evaluate potential evolutionary constraints. Within-individual variation was estimated as residual deviations from a repeatability model. Using an animal model on mean-standardized phenotypic data, we quantified narrow-sense heritabilities, conditional and unconditional evolvabilities, and genetic correlations for floral organ sizes and their within-individual variation. We found that within-individual variation exhibited higher conditional and unconditional evolvabilities compared to floral organ sizes. Evolvabilities of floral organ sizes were constrained by both additive genetic variance and genetic correlati..., , # Quantitative genetic data of floral organ sizes and within-individual variation in Solanum rostratum

Dataset DOI: [10.5061/dryad.b5mkkwhr5](10.5061/dryad.b5mkkwhr5)

## Description of the data and file structure

This dataset comprises phenotypic measurements of 11 floral traits obtained from a full-sib/half-sib crossing design in *Solanum rostratum* (Solanaceae). Floral organ sizes are reported in centimeters (cm), and within-individual variation is quantified as the residual deviations derived from a repeatability model. The experimental design includes Block (spatial grouping) and Year (temporal replication) as factors, along with total plant height as a proxy for overall plant size. The dataset is unbalanced and was analyzed using linear mixed-effects models in `ASReml-R`; thus, it is not amenable to traditional ANOVA frameworks. Phenotypic data were collected exclusively from F1 progeny, with parental measurements excluded. The accompanying pedigree file lists parental individua...,