Abstract
ITS of the nrDNA were sequenced for 21 taxa inIxoroideae and outgroups (Rubiaceae) and compared with sequences of the cp-generbcL. Separate and combined analyses were performed. ITS-variation was extensive and, because of alignment ambiguities, some sites were excluded from the analyses. Several topologies from therbcL analysis that conflicted with earlier classifications are corroborated by the ITS data: 1)Posoqueria should be excluded fromGardenieae. 2) The disputed genusBertiera, previously inGardenieae, is basal in an extendedCoffeeae, includingTricalysia. 3)Ixora should be excluded fromPavetteae. 4)Vangueria, (Antirheoideae), belongs toIxoroideae. This affiliation ofAntirheoideae tribes withIxoroideae is also shown by new ITS andrbcL data forAlberta. Incongruities found between the two data sets may be caused by density of taxon sampling, different evolutionary rates, phylogenetic sorting, homoplasy caused by functional constraints, or sampling of non-orthologous ITS types.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
