An annual life history is often associated with the ability to self-fertilize. However, it is unknown whether the evolution of selfing commonly precedes the evolution of annuality, or . Using a 2-year common garden experiment, we asked if the evolution of selfing in the normally perennial was accompanied by a shift towards the annual habit. Despite their very recent divergence from obligately outcrossing populations, selfing plants exhibited a 39% decrease in over-winter survival after the first year compared with outcrossing plants. Our data ruled out the most obvious underlying mechanism: differences in reproductive investment in the first year did not explain differences in survival. We conclude that transitions to selfing in perennial may be accompanied by a shift towards annuality, but drivers of the process require further investigation.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7532718 | PMC |
| http://dx.doi.org/10.1098/rsbl.2020.0402 | DOI Listing |
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