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Consequences of the pollination system on genetic structure and patterns of species distribution in the Andean genus Polylepis (Rosaceae): a comparative study.
- Source :
-
Plant Systematics & Evolution . Jul2007, Vol. 266 Issue 1/2, p91-103. 13p. 1 Black and White Photograph, 2 Diagrams, 1 Chart, 1 Graph. - Publication Year :
- 2007
-
Abstract
- As a member of the Sanguisorbinae, taxonomically complicated Polylepis Ruiz & Pav. from the South American Andes is one of the few wind-pollinated genera of Rosaceae. Here, it is suggested that problems traditionally faced in species delimitation and phylogeny reconstruction may be in part due to a combination of weak reproductive barriers and the large distances that can be covered by genetic information as a result of wind pollination. The pattern of species distribution as well as molecular data (AFLP) of Polylepis were contrasted with those of an unrelated, insect-pollinated genus of similar species number and distribution, Minthostachys (Griseb.) Spach (Lamiaceae). In the present case, extensive pollen-mediated gene flow may explain the homogenization of genetic variability over larger distances and a lower number of species restricted to individual countries in the wind-pollinated genus Polylepis, but more examples will have to be studied before arriving at final conclusions. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 03782697
- Volume :
- 266
- Issue :
- 1/2
- Database :
- Academic Search Index
- Journal :
- Plant Systematics & Evolution
- Publication Type :
- Academic Journal
- Accession number :
- 26035122
- Full Text :
- https://doi.org/10.1007/s00606-007-0543-0