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Cytogeography of Callisia section Cuthbertia (Commelinaceae)
- Source :
- Comparative Cytogenetics, Comparative Cytogenetics 11(4): 553-577, Comparative Cytogenetics, Vol 11, Iss 4, Pp 553-577 (2017)
- Publication Year :
- 2017
- Publisher :
- Pensoft Publishers, 2017.
-
Abstract
- Determining the distribution of cytotypes across the geographic distribution of polyploid complexes can provide valuable information about the evolution of biodiversity. Here, the phytogeography of cytotypes in section Cuthbertia (Small, 1903) Hunt, 1986 is investigated. A total of 436 voucher specimens was georeferenced; 133 new specimens were collected. Based on flow cytometry data, DNA content of all cytotypes in section Cuthbertia was estimated. Utilizing chromosome counts and flow cytometric analysis, cytotype distribution maps were generated. Two disjunct groups of populations of diploid Callisia graminea (Small, 1903) Tucker, 1989 were discovered; tetraploid C. graminea ranges broadly from the coastal plain of North Carolina through central Florida. One hexaploid C. graminea individual was recorded in South Carolina, and numerous individuals of hexaploid C. graminea were found in central Florida. Diploid C. ornata (Small, 1933) Tucker, 1989 occurs in eastern Florida; previously unknown tetraploid and hexaploid populations of C. ornata were discovered in western and central Florida, respectively. Diploid C. rosea (Ventenat, 1800) Hunt, 1986 occurs in Georgia and the Carolinas, with populations occurring on both sides of the Fall Line. The cytotype and species distributions in Callisia are complex, and these results provide hypotheses, to be tested with morphological and molecular data, about the origins of the polyploid cytotypes.
- Subjects :
- 0106 biological sciences
lcsh:QH426-470
Liliopsida
Biodiversity
Plant Science
Disjunct
Phytogeography
010603 evolutionary biology
01 natural sciences
cytotypes
CallisiaPlantae
Polyploid
Botany
Genetics
Commelinales
Commelinaceae
Plantae
Genome size
polyploidy
biology
Florida scrub vegetation
flow cytometry
chromosome counts
biology.organism_classification
Southeastern United States
lcsh:Genetics
Tracheophyta
genome size
Callisia
Callisia graminea
endemic
sandhill vegetation
Animal Science and Zoology
Ploidy
Research Article
010606 plant biology & botany
Biotechnology
Subjects
Details
- ISSN :
- 1993078X and 19930771
- Volume :
- 11
- Database :
- OpenAIRE
- Journal :
- Comparative Cytogenetics
- Accession number :
- edsair.doi.dedup.....04964d20e584c4fe39b30716aeba8a84