10.5061/DRYAD.9P1TC81
Tomaszewski, Caitlin E.
University of Calgary
Kulbaba, Mason W.
University of Calgary
University of Minnesota
Harder, Lawrence D.
University of Calgary
Data from: Mating consequences of contrasting hermaphroditic plant sexual
systems
Dryad
dataset
2018
sexual systems
andromonoecy
monocliny
monoecy
Holocene
hermaphrodite
Anticlea occidentalis
2018-07-31T18:23:09Z
2018-07-31T18:23:09Z
en
https://doi.org/10.1111/evo.13572
555204 bytes
3
CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
For hermaphroditic angiosperms with multiple flowers the sex roles can be
exclusively combined in bisexual flowers (monocliny), strictly separated
among different flowers (monoecy), or arrayed in mixtures of bisexual
flowers with female flowers (gynomonoecy) or male flowers (andromonoecy).
The hypothesized benefits favoring the evolution of these contrasting
hermaphroditic sexual systems are typically examined individually, usually
by assessing success through only one sex role. We tested predictions of
most hypotheses experimentally with an andromonoecious species, Anticlea
occidentalis (Melanthiaceae), based on the performance of intact plants
(andromonoecy) and those with emasculated bisexual flowers (functionally
monoecious) or emasculated male flowers (functionally monoclinous with
sterile peripheral flowers). Andromonoecy in this species enables
efficient, size-dependent resource allocation, emphasizing female function
in large plants. Emasculation revealed that anthers in male flowers
promote female mating quality (outcrossing rate and mate diversity),
whereas anthers in bisexual flowers promote male mating quantity (pollen
dispersal distance and probability of any siring success). Thus, different
hermaphroditic sexual systems likely evolve to capitalize on suites of
benefits, rather than just one, and provide compromises between
quantitative and qualitative reproductive components. These compromises
apparently maximize an individual’s combined genetic contributions through
female and male functions, rather than separate contributions through each
sex role.
Anticlea plant dataThis spreadsheet presents plant-level data. Two
individual worksheets (each accompanied by legend worksheets) are
included. The "plant" worksheet presents variables describing
aspects of plant stature, flower and fruit production, fates during hail
storm, and female and male reproductive success for all 163 study plants.
The "mating" worksheet identifies the parents of genotyped seeds
and the intermate distance if the identity of both parents was
known.Anticlea flower dataThe Excel spreadsheet includes 4 worksheets
(each accompanied by legend worksheets) that present flower-level data for
different aspects of reproduction. The "floral traits" worksheet
includes variables identifying flower position, type and size and ovule
number. The "pollen production" worksheet presents pollen counts
for a sampled subset of flowers. The "pollen receipt" worksheet
presents pollen receipt for a sampled subset of flowers. The "fruits
& seeds" worksheet identifies whether individual flowers
produced a fruit and, if so, how many seeds it contained.
Canada
Alberta