Dissertations / Theses on the topic 'Plant mating systems'
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Koslow, Jennifer Marie. "Mixed mating systems, pathogens, and plant community ecology." [Bloomington, Ind.] : Indiana University, 2006. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3232578.
Full text"Title from dissertation home page (viewed July 11, 2007)." Source: Dissertation Abstracts International, Volume: 67-08, Section: B, page: 4208. Advier: Keith Clay.
Tindle, Joel David Eubanks Micky. "The effects of herbivory on plant mating systems." Auburn, Ala., 2005. http://repo.lib.auburn.edu/2005%20Fall/Thesis/TINDLE_JOEL_1.pdf.
Full textFigueroa-Castro, Dulce M. "Mating systems in Nicotiana longiflora and N. plumbaginifolia the effect of interspecific interactions /." Diss., Columbia, Mo. : University of Missouri-Columbia, 2008. http://hdl.handle.net/10355/5587.
Full textThe entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on June 4, 2009) Vita. Includes bibliographical references.
Carleial, Fernandes Samuel [Verfasser]. "The first steps of plant mating system evolution / Samuel Carleial Fernandes." Konstanz : Bibliothek der Universität Konstanz, 2017. http://d-nb.info/1139978217/34.
Full textYao, Xiaoling. "Mating system and genetic diversity of Rhodomyrtus tomentosa (Myrtaceae) detected by ISSR markers." Click to view the E-thesis via HKUTO, 2010. http://sunzi.lib.hku.hk/hkuto/record/B43956701.
Full textYao, Xiaoling, and 姚晓玲. "Mating system and genetic diversity of Rhodomyrtus tomentosa (Myrtaceae) detected by ISSR markers." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2010. http://hub.hku.hk/bib/B43956701.
Full textSoley, Nathan. "Reproductive Biology of the invasive plant Elaeagnus umbellata: breeding system, pollinators, and implications for invasive spread." OpenSIUC, 2013. https://opensiuc.lib.siu.edu/theses/1164.
Full textLello, Denise. "Evolutionary dynamics of the mating system in a population of Mimulus guttatus /." Thesis, Connect to this title online; UW restricted, 1995. http://hdl.handle.net/1773/5180.
Full textSampson, Dennis Archie. "An assessment of the evolutionary stability of distyly in Hedyotis caerulea (Rubiaceae)." Cleveland State University / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=csu1296756691.
Full textBarriball, Kelly. "Population structure and mating system of the invasive shrub Lonicera maackii in Ohio." Kent State University / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=kent1342357868.
Full textGerst, Katharine Laura. "The Influence of Biogeography and Mating System on the Ecology of Desert Annual Plants." Diss., The University of Arizona, 2011. http://hdl.handle.net/10150/205422.
Full textSolis-Montero, Lislie. "Pollination ecology and mating system of Solanum rostratum (Solanaceae) in North America." Thesis, University of Stirling, 2013. http://hdl.handle.net/1893/20352.
Full textStanley, Zachary. "RELATIVE COMPETITIVE ABILITIES, INTERSEXUAL OVERYIELDING, AND POPULATION SEX RATIO CHANGES IN A BRYOPHYTE." UKnowledge, 2019. https://uknowledge.uky.edu/biology_etds/60.
Full textTedder, Andrew R. "Comparing the consequences of mating system shifts between different species of cruciferous plants in relation to phylogeography." Thesis, University of Glasgow, 2011. http://theses.gla.ac.uk/2372/.
Full textAlves, Rafael Moyses. "Caracterização genética de populações de cupuaçuzeiro, Theobroma grandiflorum (Willd. ex. Spreng.) Schum., por marcadores microssatélites e descritores botânico-agronômicos." Universidade de São Paulo, 2003. http://www.teses.usp.br/teses/disponiveis/11/11137/tde-08042003-164055/.
Full textThis work had the objectives to characterize and compare the genetic structure of seven populations of cupuassu, Theobroma grandiflorum (Willd. ex Spreng.) Schum., a fruit tree native to the Brazilian Amazon using microsatellite markers and botanic-agronomic descriptors; and to investigate the cupuassu mating system. The genetic structure of seven populations of cupuassu, with three originally collected at the putative center of maximum diversity of the species; three populations established at the active germplasm collection (BAG); and one population colected from commercial plantings were analyzed using microsatellite markers. High genetic variability was observed for the species, demonstrated by the elevated number of alleles per locus; high heterozigosity and divergence between populations. The divergence was more noticeable among natural populations than among populations from the germplasm collection. This divergence might indicate a preliminary process of diversification. However, it was more pronounced between the populations from Tucuruí and Nova Ipixuna, corroborating indications that this region is considered the center of maximum diversity of T. grandiflorum. These results suggested as strategy for in situ conservation, the requirement to define more than one site for genetic reserves, large enough to maintain rare alleles in the medium- to long term. For ex situ conservation, sample collection must be conducted in many sites, with low intensity in each site, due to the existing variability witihin population. The high genetic diversity observed in commercail plantings allow to recommend these areas as an alternative source for genes and genotypes for the breeding program of T. grandiflorum. The characterization of the germplasm populations was complemented using botanic-agronomic descriptors. The large observed variability for most of the evaluated descriptors indicated that the germplasm collection contained high phenotypic diversity. Initially, it was necessary to select from the 53 evaluated variables, those most suitable for characterization of the accessions. Using univariate and multivariate analyses of principal components, it was possible to discard 64% of the initial variables, and a minimum descriptor list with 19 traits was proposed for cupuassu. Based on the minimum descriptor list, a matrix of dissimilarity was constructed using Euclidean distances. The 31 evaluated cupuassu accessions were grouped using Tocher and UPGMA, into six groups. The comparison betwen the molecular and phenotypic characterization revealed a significant and positive correlation between the genetic and phenotypic distances. The mating system fo cupuassu was studied, based on a natural population from Nova Ipixuna PA, using eight progenies derived from open-pollinated pods with ten individuals each and eight polymorphic microsatellite loci. Based on the estimation of the multilocus outcrossing rate ( $ t m =1,0) and individual outcrossing rate ( $ t =1.0), the results from this population suggested that T. grandiflorum is a predominatly outbreeding species, with a small percentage (5,4%) of biparental inbreeding. These results have important implications on the in situ conservation strategies and on the use of open-pollinated progenies in breeding programs.
Delnevo, Nicola. "Conospermum undulatum: insights into population genetics and pollination ecology of a threatened species." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2020. https://ro.ecu.edu.au/theses/2398.
Full textOlofsson, Anders. "Modern Stereo Correspondence Algorithms : Investigation and Evaluation." Thesis, Linköping University, Information Coding, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-57853.
Full textMany different approaches have been taken towards solving the stereo correspondence problem and great progress has been made within the field during the last decade. This is mainly thanks to newly evolved global optimization techniques and better ways to compute pixel dissimilarity between views. The most successful algorithms are based on approaches that explicitly model smoothness assumptions made about the physical world, with image segmentation and plane fitting being two frequently used techniques.
Within the project, a survey of state of the art stereo algorithms was conducted and the theory behind them is explained. Techniques found interesting were implemented for experimental trials and an algorithm aiming to achieve state of the art performance was implemented and evaluated. For several cases, state of the art performance was reached.
To keep down the computational complexity, an algorithm relying on local winner-take-all optimization, image segmentation and plane fitting was compared against minimizing a global energy function formulated on pixel level. Experiments show that the local approach in several cases can match the global approach, but that problems sometimes arise – especially when large areas that lack texture are present. Such problematic areas are better handled by the explicit modeling of smoothness in global energy minimization.
Lastly, disparity estimation for image sequences was explored and some ideas on how to use temporal information were implemented and tried. The ideas mainly relied on motion detection to determine parts that are static in a sequence of frames. Stereo correspondence for sequences is a rather new research field, and there is still a lot of work to be made.
Tunková, Martina. "Městské lázně." Master's thesis, Vysoké učení technické v Brně. Fakulta architektury, 2010. http://www.nusl.cz/ntk/nusl-215713.
Full textSteenhuisen, Sandy-Lynn. "Mating systems, insect pollination and chemical ecology of grassland Protea species (Proteaceae)." Thesis, 2012. http://hdl.handle.net/10413/8450.
Full textThesis (Ph.D.)-University of KwaZulu-Natal, Pietermaritzburg, 2012.
Breed, Martin F. "Restoration genetics of Murray Mallee and neotropical forests." Thesis, 2013. http://hdl.handle.net/2440/81911.
Full textThesis (Ph.D.) -- University of Adelaide, School of Earth and Environmental Sciences, 2013
Kishore, Venkata Krishna. "Mapping quantitative trait loci underlying genome-wide recombination rate and mating system differences in meadowfoam." Thesis, 2002. http://hdl.handle.net/1957/32553.
Full textGraduation date: 2002
Bachmann, J. A., Andrew Tedder, B. Laenen, M. Fracassetti, A. Désamoré, C. Lafon-Placette, K. A. Steige, et al. "Genetic basis and timing of a major mating system shift in Capsella." 2019. http://hdl.handle.net/10454/17270.
Full textA crucial step in the transition from outcrossing to self-fertilization is the loss of genetic self-incompatibility (SI). In the Brassicaceae, SI involves the interaction of female and male speci-ficity components, encoded by the genesSRKandSCRat the self-incompatibility locus (S-lo-cus). Theory predicts thatS-linked mutations, and especially dominant mutations inSCR, arelikely to contribute to loss of SI. However, few studies have investigated the contribution ofdominant mutations to loss of SI in wild plant species. Here, we investigate the genetic basis of loss of SI in the self-fertilizing crucifer speciesCapsella orientalis, by combining genetic mapping, long-read sequencing of completeS-hap-lotypes, gene expression analyses and controlled crosses. We show that loss of SI inC. orientalisoccurred<2.6 Mya and maps as a dominant trait totheS-locus. We identify a fixed frameshift deletion in the male specificity geneSCRand con-firm loss of male SI specificity. We further identify anS-linked small RNA that is predicted tocause dominance of self-compatibility. Our results agree with predictions on the contribution of dominantS-linked mutations toloss of SI, and thus provide new insights into the molecular basis of mating system transitions.
Work at Uppsala Genome Center is funded by 550 RFI / VR and Science for Life Laboratory, Sweden. The SNP&SEQ Platform is supported by 551 the Swedish Research Council and the Knut and Alice Wallenberg Foundation. V.C. 552 acknowledges support by a grant from the European Research Council (NOVEL project, 553 grant #648321). The authors thank the French Ministère de l’Enseignement Supérieur et de la 554 Recherche, the Hauts de France Region and the European Funds for Regional Economical 555 Development for their financial support to this project. This work was supported by a grant 556 from the Swedish Research Council (grant #D0432001) and by a grant from the Science for 557 Life Laboratory, Swedish Biodiversity Program to T.S. The Swedish Biodiversity Program is 558 supported by the Knut and Alice Wallenberg Foundation.
Erickson, Vicky J. "The influence of distance and floral phenology on pollen gene flow and mating system patterns in a coastal Douglas-fir seed orchard /." 1987. http://hdl.handle.net/1957/13441.
Full textWhitehead, Michael Robert. "The evolutionary biology of pollination: studies in a genus of australian sexually deceptive orchids." Phd thesis, 2012. http://hdl.handle.net/1885/10260.
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