Data from: Reduced drought tolerance during domestication and the evolution of weediness results from tolerance-growth trade-offs
Koziol, Elizabeth Katherine
Rieseberg, Loren H., University of British Columbia
Kane, Nolan Coburn, University of British Columbia
Bever, James D., Indiana University
Published Jun 07, 2012 on Dryad.
Cite this dataset
Koziol, Elizabeth Katherine; Rieseberg, Loren H.; Kane, Nolan Coburn; Bever, James D. (2012). Data from: Reduced drought tolerance during domestication and the evolution of weediness results from tolerance-growth trade-offs [Dataset]. Dryad. https://doi.org/10.5061/dryad.sb432
The increased reproductive potential, size, shoot allocation, and growth rate of weedy plants may result from reduced resource allocation to other aspects of plant growth and defense. To investigate whether changes in resource allocation occurred during domestication or the evolution of weediness, we compared the mycorrhizal responsiveness, growth, and drought tolerance of nine native ruderal, nine agriculturally weedy (four US weedy and five Australian weedy), and fourteen domesticated populations (eight ancient landraces and six improved cultivars) of the common sunflower (Helianthus annuus). Domesticated sunflower cultivars were less drought tolerant, but had higher plant growth and fecundity and coarser roots than wild populations. There were no changes in level of drought tolerance between improved cultivars and ancient landraces plants, but there was an increase in allocation to flowers with recent selection. Weedy populations were intermediate between domesticated cultivars and native ruderal populations for plant growth rate, root architecture and drought tolerance. Weedy populations benefited most from mycorrhizal inoculation by having fewer wilted leaves and wetter soil. Overall, we found that trade-offs between drought tolerance and several aspects of plant growth, including growth rate, allocation to flowering and root architecture, govern evolution during sunflower domestication and the invasion of disturbed habitat.
blub pop resids for avdiam
SAS code to perform the analysis of BLUPs for root architecture measurements.
blub pop resids for final measures
SAS code to analyze the BLUPs for plant growth characters of size and flowering.
Drought Data dec 10th 2009-1
Full experiment data sheet the includes all ther measurements for the drought and mhycorrhizal response treatments of the experiment.
Drought Data infection
Data of how mycorrhizally infected each non-drought stressed plant was.
Code to analyze mycorrhizal infection
end of experiment final measures Weedy3 Oct 2011
Code to analyze the full experiment drought response