10.5061/DRYAD.RJDFN2Z8F
Ramula, Satu
0000-0001-7795-0352
University of Turku
Kalske, Aino
University of Turku
Introduced plants of Lupinus polyphyllus are larger but flower less
frequently than conspecifics from the native range: Results of the first
year
Dryad
dataset
2020
Academy of Finland
https://ror.org/05k73zm37
319241,
Kone Foundation
https://ror.org/05jwty529
NA
Finnish Cultural Foundation
https://ror.org/027xav248
V-S regional fund
2021-10-01T00:00:00Z
2021-10-01T00:00:00Z
en
317436 bytes
2
CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Introduced species, which establish in novel environments, provide an
opportunity to explore trait evolution and how it may contribute to the
distribution and spread of species. Here, we explore trait changes of the
perennial herb Lupinus polyphyllus based on 11 native populations in the
western USA and 17 introduced populations in Finland. More specifically,
we investigated whether introduced populations outperformed native
populations in traits measured in situ (seed mass) and under common garden
conditions during their first year (plant size, flowering probability, and
number of flowering shoots). We also explored whether climate of origin
(temperature) influenced plant traits, and quantified the degree to which
trait variability was explained collectively by country and temperature as
compared to other population-level differences. Three out of four plant
traits differed between the native and introduced populations; only seed
mass was similar between countries, with most of its variation attributed
to other sources of intraspecific variation not accounted for by country
and temperature. Under common garden conditions, plants originating from
introduced populations were larger than those originating from native
populations. However, plants from the introduced range flowered less
frequently and had fewer flowering shoots than their native-range
counterparts. Temperature of a population’s origin influenced plant size
in the common garden, with plant size increasing with increasing mean
annual temperature in both native and introduced populations. Our results
of the first year reveal genetic basis for phenotypic differences in some
fitness-related traits between the native and introduced populations of L.
polyphyllus. However, not all of these trait differences necessarily
contribute to the invasion success of the species and thus may not be
adaptive, which raises a question how persistent the trait differences
observed in the first year are later in individuals’ life for perennial
herbs.