Leaf and inflorescence structure and phylogenetics of Tripogon and affiliated genera (Poaceae: Chloridoideae)
Fabillo, Melodina (2015) Leaf and inflorescence structure and phylogenetics of Tripogon and affiliated genera (Poaceae: Chloridoideae). PhD thesis, Queensland University of Technology.
This thesis provides new knowledge on an understudied group of grasses, some of which are resurrection grasses (i.e. able to withstand extreme drought). The sole Australian species (Tripogon loliiformis) is morphologically diverse and could be more than one species. This study sought to determine how many species of Tripogon occur in Australia, their relationships to other species in the genus and to two other genera of resurrection grasses (Eragrostiella and Oropetium). Results of the research indicate there is not enough evidence, from DNA sequence data, to warrant splitting up T. loliiformis into multiple species. The extensive morphological diversity seems to be influenced by environmental conditions. The three genera are so closely related that they could be grouped into a single genus. This new knowledge opens up pathways for future investigations, including studying genes responsible for desiccation tolerance and the conservation of native grasses that occur in rocky habitats.
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|Item Type:||QUT Thesis (PhD)|
|Supervisor:||Scharaschkin, Tanya, Prentis, Peter, & Thompson, John|
|Keywords:||Tripogon, Tripogon loliiformis, leaf anatomy, leaf micromorphology, lemma micromorphology, phylogenetic analyses, resurrection grass, Bayesian inference, maximum parsimony, maximum likelihood|
|Divisions:||Current > Schools > School of Earth, Environmental & Biological Sciences
Current > QUT Faculties and Divisions > Science & Engineering Faculty
|Institution:||Queensland University of Technology|
|Deposited On:||01 Jun 2015 03:01|
|Last Modified:||08 Sep 2015 06:10|
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