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Abstract Detail


Systematics Section/ASPT

Neubig, Kurt [1], Blanchard, Orland [1], Whitten, William [2], Schwartz, Emily [3], Mcdaniel, Stuart [4].

Contemplations on reticulations in Kosteletzkya (Malvaceae, Hibisceae).

Although the formation of polyploids is an integral and common feature of evolution among plants, there is still limited knowledge of their phylogenetic distribution in many plants. Kosteletzkya s.s. includes 17 species, five of which are polyploid, found in the New World, Africa and Asia. Both nuclear and plastid data were sequenced for 15 of the species of Kosteletzkya and, in many cases, with multiple accessions per species. The African species form a paraphyletic grade relative to a New World clade. Polyploidy has only occurred in Africa, at different times and between different parental constituents. These data also confirm recent studies of chromosome counts, which have shown that there exists diploid, tetraploid, and hexaploid species. These data support the relatively ancient formation of a putative autotetraploid species (K. semota), one recent allotetraploid species (K. borkouana), two relatively ancient, allotetraploid species (K. begoniifolia and K. rotundalata),and one recent allohexaploid species (K. racemosa).

Broader Impacts:


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1 - University of Florida, Florida Museum of Natural History, 385 Dickinson Hall, Gainesville, FL, 32611-7800
2 - University Of Florida, Florida Museum Of Natural History, PO BOX 117800, Gainesville, FL, 32611-7800, USA, 352/273-1964
3 -
4 - University of Florida, Dept. of Biology, Gainesville, FL, 32611

Keywords:
Hibisceae
Kosteletzkya
Malvaceae
phylogeny
Polyploidy.

Presentation Type: Poster:Posters for Sections
Session: P
Location: Battelle South/Convention Center
Date: Monday, July 9th, 2012
Time: 5:30 PM
Number: PSY048
Abstract ID:337


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