Phylogenetic Relationships of Andromonoecious and Dioecious Australian Species of Solanum subgenus Leptostemonum section Melongena: Inferences from ITS Sequence Data

$23.00 plus tax (Refund Policy)

Buy Article:

Abstract:

This is the first extensive molecular phylogeny for any group of Solanum in Australia. A total of 64 specimens representing 29 taxa were sampled, including 18 endemic Australian members of subgenus Leptostemonum (the "spiny solanums") section Melongena sensu Symon. Data from the rDNA ITS region were analyzed using parsimony, maximum likelihood, and Bayesian methods to test the hypothesis that the dioecious and andromonoecious Australian species of section Melongena constitute a monophyletic group. Analyses showed support for the recognition of five clades among the Australian species of the section, but little support for the monophyly of the section itself. Australian dioecious Solanum species form two distinct clades and a number of enigmatic and previously unplaced dioecious taxa are here placed within a single clade. Three groups of andromonoecious species are also each monophyletic and are nested in a polytomy with three clusters of species from outside section Melongena. Furthermore, the phylogeny indicates that dioecy has evolved either once or twice in Australian Solanum, possibly from andromonoecious ancestry.

Keywords: ANDROMONOECY; BREEDING SYSTEM; DIOECY; INAPERTURATE POLLEN; KIMBERLEY PLATEAU; SOLANACEAE

Document Type: Regular Paper

DOI: http://dx.doi.org/10.1600/036364406777585801

Publication date: April 1, 2006

More about this publication?
Related content

Tools

Favourites

Share Content

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more