Response to joint selection on germination and flowering phenology depends on the direction of selection.

ABSTRACT: Flowering and germination time are components of phenology, a complex phenotype that incorporates a number of traits. In natural populations, selection is likely to occur on multiple components of phenology at once. However, we have little knowledge of how joint selection on several phenological traits influences evolutionary response. We conducted one generation of artificial selection for all combinations of early and late germination and flowering on replicated lines within two independent base populations in the herb Campanula americana. We then measured response to selection and realized heritability for each trait. Response to selection and heritability were greater for flowering time than germination time, indicating greater evolutionary potential of this trait. Selection for

SUBMITTER: Galloway LF 

PROVIDER: S-EPMC6106181 | biostudies-literature | 2018 Aug

REPOSITORIES: biostudies-literature