The function of the floral corona in the pollination of a Mediterranean style dimorphic daffodil
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We described UV reflectance patterns of the corona and tepals, and characterised VOCs in intact flowers and flowers with trimmed coronas. We also conducted a field experiment in the dimorphic and monomorphic region to estimate the importance of corona removal on seed production in stands with solitary plants and in groups to control for compatible pollen limitation.
Reflectance was higher in the tepals than the corona, although both traits presented a reflectance peak around 450 nm wavelength. L- and S-flowers produced similar volatiles, regardless of the manipulation of the corona. Across dimorphic and monomorphic regions, S-flowers with the corona removed suffered a reduction in seed production of ca. 50%, while seed production remained similar in L flowers both with the corona intact and removed. Plants in solitary stands suffered a strong reduction in seed production, which was more pronounced in the monomorphic region.
Our results suggest that the corona in Narcissus is more important for the pollination of S-flowers, which generally have lower seed production compared to L-flowers. Taken together, these results suggest that the floral corona indirectly plays an important role for maintenance of the polymorphism.
|Early online date||8 Dec 2017|
|Publication status||Published - Jan 2018|
- The function of the floral corona
Rights statement: This is the peer reviewed version of the following article: Pérez-Barrales, R., Abarca, C. A., Santos-Gally, R., Schiestl, F. P. and Arroyo, J. (2018), The function of the floral corona in the pollination of a Mediterranean style dimorphic daffodil. Plant Biol J, 20: 118–127. doi:10.1111/plb.12657, which has been published in final form at http://onlinelibrary.wiley.com/doi/10.1111/plb.12657/full. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.
Accepted author manuscript (Post-print), 0.99 MB, PDF document