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Abstract Detail

Pollination Biology

Molano-Flores, Brenda [1], Primer, Samantha B. [2], Annis, Jenna [3], Feist, Mary Ann [4], Coons, Janice [3].

Reproductive ecology of three Pinguicula species in the southeastern USA.

Ninety-six Pinguicula species have been described worldwide, six of which can be found in the southeastern USA. Although several studies have been conducted investigating the reproductive ecology of these carnivorous plants, most of these studies have been conducted in Europe and none in the southeastern USA. In 2013, 2014, and 2015 the reproductive ecology of P. ionantha, P. lutea, and P. planifolia was studied at multiple locations in the Florida Panhandle. These three Pinguiucla species are considered to be rare in Florida. Pinguiucla ionantha, has been listed as endangered at the state level and as threatened at the federal level. Both P. lutea and P. planifolia are listed as threatened in Florida. These studies were conducted from February to April during the blooming season for these species. Breeding system studies were conducted at five populations per species to assess xenogamy vs. autogamy and self-incompatibility vs. self-compatibility. In addition, fruit and seed set were accessed at the same populations to determine reproductive success. Also, pollen to ovule ratios were estimated for all species. Lastly, phenological and pollinator observations were conducted. All three Pinguicula species were determined to be xenogamous and self-compatible based on the breeding system studies and phenological and pollinator observations. However, the pollen to ovule ratios point to autogamy. In addition, the three Pinguicula species had extremely high levels of fruit set and seed set, though these varied among populations. Although these species are rare in Florida, the results of these studies suggest that the reproductive ecology is not currently contributing to the decline of these species. These studies represent among the most comprehensive studies associated with the reproductive ecology of Pinguicula species in the USA and will assist in the conservation of these species across the Florida Panhandle.

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1 - Illinois Natural History Survey, 1816 South Oak Street, Champaign, IL, 61820-6970, USA
2 - University of Illinois, Plant Biology, 1816 S. Oak Street, Champaign, IL, 61820
3 - Eastern Illinois University, Department of Biological Sciences, 600 Lincoln Ave., Charleston, IL, 61920
4 - University of Wisconsin-Madison, Botany Department, 430 Lincoln Drive, Madison, WI, 53706

Carnivorous plants
Florida Panhandle.

Presentation Type: Oral Paper:Papers for Topics
Session: 13
Location: Salon 6/The Shaw Conference Centre
Date: Monday, July 27th, 2015
Time: 1:30 PM
Number: 13001
Abstract ID:634
Candidate for Awards:None

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