Skip to content
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Menu
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Menu
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
A plastid gene phylogeny of the yam genus, Dioscorea: Roots, fruits and Madagascar
Systematic Botany, Volume 30, No. 4, Year 2005
Notification
URL copied to clipboard!
Description
Following recent phylogenetic studies of the families and genera of Dioscoreales, the identification of monophyletic infrageneric taxa in the pantropical genus Dioscorea is a priority. A phylogenetic analysis based on sequence data from the plastid genes rbcL and matK is presented, using 67 species of Dioscorea and covering all the main Old World and selected New World lineages. The analysis used 14 outgroup taxa, including Trichopus Gaertn., Tacca J.R. & G. Forster, Stenomeris Planch., Burmannia L. and Thismia Griff. The main findings are: a) that a clade of rhizomatous taxa is sister to the rest of Dioscorea; b) the main Old World groups (such as the right-twining D. sect. Enantiophyllum) are monophyletic and c) there are two distinct lineages among the endemic Malagasy taxa. The consequences of the results for infrageneric classification of Dioscorea is considered, in particular the possibility of greatly simplifying the classifications of Knuth and Burkill. The results are also used to present novel hypotheses of character evolution in selected underground storage organ, inflorescence, fruit and seed characters and to discuss the origins of diversity in Dioscorea. © Copyright 2005 by the American Society of Plant Taxonomists.
Authors & Co-Authors
Wilkin, Paul
United Kingdom, Richmond
Royal Botanic Gardens, Kew
Schols, Peter
Belgium, Leuven
Ku Leuven
Chase, Mark W.
United Kingdom, Richmond
Royal Botanic Gardens, Kew
Chayamarit, Kongkanda
Thailand, Bangkok
The Forest Herbarium, Thailand Ministry of Natural Resources and Environment
Furness, Carol A.
United Kingdom, Richmond
Royal Botanic Gardens, Kew
Huysmans, Suzy
Belgium, Leuven
Ku Leuven
Rakotonasolo, Franck
Madagascar, Antananarivo
Parc Botanique et Zoologique de Tsimbazaza
Smets, Erik F.
Belgium, Leuven
Ku Leuven
Thapyai, Chirdsak
Thailand, Pitsanulok
Naresuan University
Statistics
Citations: 117
Authors: 9
Affiliations: 5
Identifiers
Doi:
10.1600/036364405775097879
ISSN:
03636445
e-ISSN:
03636445
Research Areas
Genetics And Genomics
Study Locations
Madagascar