Show simple item record

dc.contributor.authorLim, Gwynne Shimin
dc.date.accessioned2018-10-23T13:22:50Z
dc.date.available2020-06-04T06:00:58Z
dc.date.issued2018-05-30
dc.identifier.otherLim_cornellgrad_0058F_10703
dc.identifier.otherhttp://dissertations.umi.com/cornellgrad:10703
dc.identifier.otherbibid: 10489511
dc.identifier.urihttps://hdl.handle.net/1813/59426
dc.description.abstractThe genus Tacca comprises an enigmatic group of tropical perennial acaulescent herbs. These plants are characterized by unique bracteate reproductive displays, which have excited interest in their reproductive biology. This dissertation examines aspects of systematics and reproductive biology in Tacca. The first chapter puts forward a phylogenetic study of relationships within Tacca J.R. Forst. & G. Forst., supplementing previous molecular phylogenetic and pre-cladistic taxonomic studies. Species, exemplar, and outgroup sampling are expanded. Multiple sources of data, molecular and morphological, are used for phylogenetic inference. This is used to interpret morphological evolution in various plant organs in the genus. The second chapter presents a comparative analysis of the genes and plastome structures of single representatives from Tacca and sister genus Thismia. The plastomes were sequenced using next-generation technology and generated using de novo assembly programs. The plastid genome of Thismia is among the smallest known quadripartite plastomes. The plastome of Tacca is more similar to other autotrophic members of Dioscoreaceae than to Thismia The third chapter documents an investigation into floral visitors of Tacca cristata Jack. Existing research on the pollination and reproductive biology of Tacca demonstrate low levels of outcrossing and likely autogamous selfing. Based on visual observations and field collections of insect visitors to natural populations, this study suggests that insect visitation may result in pollination of showy members of Tacca to some extent. The fourth chapter proposes to resurrect and lectotypify Tacca artocarpifolia Seem., a species currently in taxonomic synonymy. This is done based on examination and measurements made from photographs, live material, and herbarium specimens, including all named syntypes.
dc.language.isoen_US
dc.subjectBotany
dc.titleSYSTEMATICS AND REPRODUCTIVE BIOLOGY OF Tacca J.R. Forst. & G. Forst.
dc.typedissertation or thesis
thesis.degree.disciplinePlant Biology
thesis.degree.grantorCornell University
thesis.degree.levelDoctor of Philosophy
thesis.degree.namePh. D., Plant Biology
dc.contributor.chairDavis, Jerrold I.
dc.contributor.committeeMemberRaguso, Robert A.
dc.contributor.committeeMemberGandolfo Nixon, Maria Alejandra
dc.contributor.committeeMemberStevenson, Dennis
dcterms.licensehttps://hdl.handle.net/1813/59810
dc.identifier.doihttps://doi.org/10.7298/X4WH2N78


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record

Statistics