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Premise: Genetic variation influences potential for evolution to rescue populations from impacts of environmental change. Most studies of genetic variation in fitness-related traits focus on either vegetative or floral traits, with few on floral scent. How vegetative and floral traits compare in potential for adaptive evolution is poorly understood. Results: Vegetative traits SLA and WUE varied greatly among planting sites, while showing weak or no genetic variation among source populations. SLA and trichomes responded plastically to snowmelt date, and SLA exhibited within-population genetic variation. All aspects of floral morphology varied genetically among source populations, and corolla length, corolla width, and sepal width varied genetically within populations. Heritability was not detected for volatiles, due to high environmental variation, although one terpene had high evolvability and two terpenes correlated genetically with sepal width, associated with high emission from that tissue. Environmental variation across sites was weak for floral morphology and stronger for volatiles and vegetative traits. Three of 4 volatiles showed inheritance departing from additive. Conclusions: Results indicate stronger genetic potential for evolutionary responses to selection in floral morphology compared with scent and vegetative traits, while finding potentially adaptive plasticity in some vegetative traits.
Knowledge graph centered on Data from: Genetic and spatial variation in vegeta with 10 nodes and 40 connections. Top connected: Diane R. Campbell, Silicon tubing volatile collection (Polemoniaceae), Robert A. Raguso, reflectance spectrophotometry, Li-Cor 6400 photosynthesis measurement.
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