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...,花器官的个体内变异是影响显花植物适合度的重要表型组分。尽管该变异的遗传基础此前已有研究，但其G矩阵（G-matrix）的结构与进化潜力仍未被探索。本研究以刺萼龙葵（*Solanum rostratum*）为对象，解析其花器官个体内变异的G矩阵，并评估潜在的进化约束。个体内变异通过重复度模型的残差偏差进行估算。基于均值标准化的表型数据构建动物模型，本研究量化了花器官大小及其个体内变异的狭义遗传力、条件可演化性、无条件可演化性以及遗传相关系数。研究发现，相较于花器官大小，个体内变异展现出更高的条件可演化性与无条件可演化性。花器官大小的可演化性同时受到加性遗传方差与遗传相关的约束…… # 刺萼龙葵花器官大小与个体内变异的数量遗传数据集 数据集DOI：10.5061/dryad.b5mkkwhr5 ## 数据与文件结构说明 本数据集包含通过全同胞/半同胞杂交设计获取的刺萼龙葵（*Solanum rostratum*，茄科）的11个花性状的表型测量值。花器官大小以厘米（cm）为单位记录，个体内变异通过重复度模型得到的残差偏差进行量化。实验设计以区组（空间分组）与年份（时间重复）作为因子，并以植株总高度作为植株整体大小的替代指标。本数据集为非平衡数据集，采用`ASReml-R`中的线性混合效应模型进行分析，因此不适用于传统方差分析（ANOVA）框架。表型数据仅采集自F1后代，未包含亲本的测量值。配套的系谱文件列出了亲本个体……