0000000000650350
AUTHOR
Joaquin Cañizares
European traditional tomatoes galore: a result of farmers' selection of a few diversity-rich loci
A comprehensive collection of 1254 tomato accessions, corresponding to European traditional and modern varieties, early domesticated varieties, and wild relatives, was analyzed by genotyping by sequencing. A continuous genetic gradient between the traditional and modern varieties was observed. European traditional tomatoes displayed very low genetic diversity, with only 298 polymorphic loci (95% threshold) out of 64 943 total variants. European traditional tomatoes could be classified into several genetic groups. Two main clusters consisting of Spanish and Italian accessions showed higher genetic diversity than the remaining varieties, suggesting that these regions might be independent seco…
Quantitative genetic analysis of floral traits shows current limits but potential evolution in the wild
The vast variation in floral traits across angiosperms is often interpreted as the result of adaptation to pollinators. However, studies in wild populations often find no evidence of pollinator-mediated selection on flowers. Evolutionary theory predicts this could be the outcome of periods of stasis under stable conditions, followed by shorter periods of pollinator change that provide selection for innovative phenotypes. We asked if periods of stasis are caused by stabilizing selection, absence of other forms of selection or by low trait ability to respond even if selection is present. We studied a plant predominantly pollinated by one bee species across its range. We measured heritability …
Electronic supplementary materials for “A stable pollination environment limits current but not potential evolution of floral traits” by Castellanos et al. from Quantitative genetic analysis of floral traits shows current limits but potential evolution in the wild
A single document containing Supplementary methods, Tables and Figures)