Term of Award
Master of Science in Biology (M.S.)
Document Type and Release Option
Thesis (open access)
Department of Biology
Lorne M. Wolfe
Committee Member 1
Daniel F. Gleason
Committee Member 2
Biological invasions are now the second leading cause of loss of biodiversity. Recently, hybridization has been hypothesized as a mechanism for invasion success. The combination of individuals from different gene pools may create novel genotypes having increased invisibility. The goal of my research was to examine the role that intraspecific hybridization may play in invasion success by using the agricultural weed Silene latifolia as a model. I used a common garden experiment to examine whether crossing parents of different ancestry results in offspring with differing quality. Plants were pollinated in three treatments reflecting parent plants within the same population (P), between-populations, within-continent (R), and between continent (C). Plants which had been produced by mating plants located intermediate distances apart (R) germinated faster, and had a greater probability of germinating and surviving. This thesis contributes to our knowledge of the potential role hybridization may play in a successful invasion.
Heaton, Lindsay, "Role of Hybridization in a Biological Invasion: An Experimental Study with Silene Latifolia" (2004). Electronic Theses and Dissertations. 698.