10.5061/DRYAD.F098G
Debban, Catherine L.
University of Virginia
Okum, Sara
University of Cincinnati
Pieper, Kathleen E.
University of Georgia
Wilson, Ariana
University of Michigan-Ann Arbor
Baucom, Regina S.
University of Michigan-Ann Arbor
Data from: An examination of fitness costs of glyphosate resistance in the
common morning glory, Ipomoea purpurea
Dryad
dataset
2016
Ipomoea purpurea
trade-offs
defense
fitness costs
Weed
2016-09-23T00:00:00Z
2016-09-23T00:00:00Z
en
https://doi.org/10.1002/ece3.1776
104346 bytes
1
CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Fitness costs are frequently invoked to explain the presence of genetic
variation underlying plant defense across many types of damaging agents.
Despite the expectation that costs of resistance are prevalent, however,
they have been difficult to detect in nature. To examine the potential
that resistance confers a fitness cost, we examined the survival and
fitness of genetic lines of the common morning glory, Ipomoea purpurea,
that diverged in the level of resistance to the herbicide glyphosate. We
planted a large field experiment and assessed survival following herbicide
application as well as fitness of the divergent selection lines in the
absence of the herbicide. We found that genetic lines selected for
increased resistance exhibited lower death compared to control and
susceptible lines in the presence of the herbicide, but no evidence that
resistant lines produced fewer seeds in the absence of herbicide. However,
susceptible lines produced more viable seeds than resistant or control
lines, providing some evidence of a fitness cost in terms of seed
germination, and thus potential empirical support for the expectation of
trait trade-offs as a consequence of adaptation to novel environments.
Field experiment data, G3sAllDataG3FieldDryad.txtGermination data for
field collected seedsID's are cross-listed with ID's from Field
data fileGermTest.txt