Dissertations and Theses @ UNI
Availability
Open Access Thesis
Keywords
Ampelopsis; Leaves--Development; Academic theses;
Abstract
The genus Ampelopsis is a member of the Vitaceae. Ampelopsis cordata Michx. and Ampelopsis arborea (L.) Koehne are the only two North American species of Ampelopsis. A recent molecular phylogenetic hypothesis placed them into two different clades (Soejima and Wen, 2006). This is correlated with mature leaf morphology, i.e. A. cordata has simple leaves, and A. arborea has compound leaves. My objective was to compare the two species leaf development from initiation to mature form to determine how and at what point their developmental trajectory differentiates and to establish a method to sufficiently track leaf development. Bpi-illumination light microscopy was used to track early leaf development until just before leaf unfolding. Trajectories were identical from leafprimordium initiation to lateral leaf appendage three (LL3) formation, which initiate acropetally from the leaf primordium base. Ampelopsis arborea reiterated leaf development from initiation to LL3, for four orders of LL and two leaflet orders. Ampelopsis cordata continued LL initiation to LL5, and then second order LL initiation to LL3. Macroscopic morphometric analysis was used to track the development from unfolding to maturity. The LL and rachis and midvein branching points were tracked using the programs TPSdig (ver 1 .40), Coordgen6f, and PCAGen6n where visual growth trajectory descriptions were made. Morphometric analysis showed symmetrical development in A. arborea and asymmetrical development for A. cordata. The results from this study supported Wen' hypothesis and showed the two species in this study begin leaf development identically despite different mature forms.
Year of Submission
2008
Degree Name
Master of Science
Department
Department of Biology
First Advisor
Jean Gerrath
Second Advisor
Stephen L. O'Kane
Third Advisor
Wendy M. Olson
Date Original
2008
Object Description
1 PDF file (76 leaves)
Copyright
©2008 Benjamin Grant Doughan
Language
en
File Format
application/pdf
Recommended Citation
Doughan, Benjamin Grant, "Analysis of Leaf Development in Ampelopsis Cordata and Ampelopsis arborea (Vitaceae)" (2008). Dissertations and Theses @ UNI. 2504.
https://scholarworks.uni.edu/etd/2504
Comments
If you are the rightful copyright holder of this thesis and wish to have it removed from the Open Access Collection, please submit a request to scholarworks@uni.edu and include clear identification of the work, preferably with URL.