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Tesis sobre el tema "Orchids"

Autor: Grafiati

Publicado: 4 de junio de 2021

Última modificación: 25 de julio de 2025

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1

Hughes, Oliver Thomas Wesley. "Orchid-mycorrhiza relationships : propagation of terrestrial and epiphytic orchids from seed." Thesis, Manchester Metropolitan University, 2018. http://e-space.mmu.ac.uk/621969/.

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Many orchids are rare and endangered due to habitat loss, degradation and human interference. This thesis aims to improve our understanding of orchid-mycorrhiza relationships and optimise methods for successful in vitro germination and development of terrestrial and epiphytic orchids. The research undertaken advances our understanding of orchids and has applications for conservation and horticulture. Fungal specificity plays a key role in orchid distribution and the colonisation of habitats. This was investigated in the Australian terrestrial orchid, Microtis media R. Br. in Chapter 2. Experim

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2

Yam, Tim-wing. "Conservation, ecology and propagation of the wild orchids of Hong Kong /." [Hong Kong : University of Hong Kong], 1988. http://sunzi.lib.hku.hk/hkuto/record.jsp?B1243873X.

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3

Tsui, Yuk-chun Prisca. "Conservation and propagation of wild orchids in Hong Kong /." [Hong Kong : University of Hong Kong], 1992. http://sunzi.lib.hku.hk/hkuto/record.jsp?B13226290.

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4

Shan, Xuechan. "Fungal associations and aspects of seed biology of some orchids of Hong Kong /." Hong Kong : University of Hong Kong, 1999. http://sunzi.lib.hku.hk/hkuto/record.jsp?B20566670.

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5

Liu, Bing. "Germination studies in terrestrial orchids." Thesis, University of Leeds, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.303461.

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6

Yuh, Seon Hee. "Cloning genes differentially expressed in freezing tolerant orchids." Virtual Press, 1996. http://liblink.bsu.edu/uhtbin/catkey/1020165.

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Genes responsible for differences in gene regulation and expression in normal cells and freezing tolerant cells were identified using two related wintergreen orchid species, Aplectrum hyemale and Tipularia discolor. Changes in gene expression observed in field-collected tissues obtained from different seasons were compared as were changes observed in plants subjected to cold shock in a laboratory environmental chamber. In order to clone these differentially expressed genes which may confer photosynthesis cold tolerance, the recently developed technique, mRNA differential display was employed.

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7

Barkman, Todd James. "Evolution of Dendrochilum subgenus Platyclinis section Eurybrachium investigated in a phylogenetic context /." Digital version accessible at:, 1998. http://wwwlib.umi.com/cr/utexas/main.

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8

Hart, Phoebe. "Orchids : intersex and identity in documentary." Thesis, Queensland University of Technology, 2009. https://eprints.qut.edu.au/29712/25/Phoebe_Hart_Thesis_redacted.pdf.

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Orchids: Intersex and Identity in Documentary explores the creative practice challenges of working with bodies with intersex in the long-form auto/biographical documentary Orchids. Just as creative practice research challenges the dominant hegemony of quantitative and qualitative research, so does my creative work position itself as a nuanced piece, pushing the boundaries of traditional cultural studies theories, documentary film practice and creative practice method, through its distinctive distillation and celebration of a new form of discursive rupturing, the intersex voice.

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9

Hart, Phoebe. "Orchids : intersex and identity in documentary." Queensland University of Technology, 2009. http://eprints.qut.edu.au/29712/.

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Orchids: Intersex and Identity in Documentary explores the creative practice challenges of working with bodies with intersex in the long-form auto/biographical documentary Orchids. Just as creative practice research challenges the dominant hegemony of quantitative and qualitative research, so does my creative work position itself as a nuanced piece, pushing the boundaries of traditional cultural studies theories, documentary film practice and creative practice method, through its distinctive distillation and celebration of a new form of discursive rupturing, the intersex voice.

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10

Wong, Kwong-chiu Alfred. "Conservation genetics of Hong Kong wild orchids /." Hong Kong : University of Hong Kong, 1998. http://sunzi.lib.hku.hk/hkuto/record.jsp?B2035793X.

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11

Kim, Bong-Suk. "Cloning of genes encoding desirable characteristics of dendrobium gatton 'sunray'." Virtual Press, 1995. http://liblink.bsu.edu/uhtbin/catkey/941349.

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Currently the breeding of desirable traits in orchid flowers is a lengthy and unpredictable process. A shortened breeding time and a more direct method of introducing specific genetic characteristics could be achieved if more information were available on the specific genes responsible for flower characteristics. In order to identify some of these genes, the genetic relationships between a hybrid, Dendrobium Gatton 'Sunray', and the parent species bred to produce it, D. chrysotoxum Lindley and D. pu/che//um Lindley were examined.Ball State UniversityMuncie, IN 47306These results were supported

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12

Petersen, Kellie. "Hybridizers and the Hybridized: Orchid Growing as Hybrid "Nature?"." Scholar Commons, 2018. https://scholarcommons.usf.edu/etd/7350.

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Orchid growing is a hobby that includes not only acquiring and caring for orchids, but also learning about the diverse care requirements of various orchids, attending meetings of orchid groups, having one’s orchids evaluated by American Orchid Society judges or being a judge, or even creating hybrids. In this way, orchid hobbyists compose a distinctive subculture (Hansen 2000). Yet the activity of orchid growing also forms a nexus between the non-human and the human, two categories that are often constructed as an opposing binary. This thesis focuses on how orchid growing represents both the e

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13

Wong, Kwong-chiu Alfred, and 黃廣潮. "Conservation genetics of Hong Kong wild orchids." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1998. http://hub.hku.hk/bib/B31221920.

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14

Marchione, Wesley A. "Pathogen resistance genes and proteins in orchids." Virtual Press, 2003. http://liblink.bsu.edu/uhtbin/catkey/1260625.

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To study resistance (R) genes that are expressed when Sophrolaeliacattleya Ginny Champion 'Riverbend' orchid tissue was infected with the tobacco mosaic virus (TMV0), a subtraction library of cDNA clones was previously constructed using mRNA isolated before and after infection (Shuck, unpublished). From 200 clones collected, 5 clones were randomly selected, DNA was isolated, and the cDNA insert was sequenced. These sequences were imported into BLAST to search for homology to other R genes. This search revealed clone 4A to have an 84% homology to a 54 nucleotide region from the Arabidopsis thal

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15

Darkwa, Alfred Anthony. "Growth and biochemistry of hardy European orchids." Thesis, University of Sussex, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.495011.

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16

Neiland, Mary Ruth Miller. "Reproductive ecology of British and Mediterranean orchids." Thesis, University of Aberdeen, 1994. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU072992.

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Factors contributing to the natural reproductive performance of flowers, plants and populations of British and Mediterranean Orchidaceae are considered. Reproductive success is found to be pollinator limited, with most European orchids failing to achieve their maximum potential within the season, particularly nectarless species. There is a consistent discrepancy in gender function, with many more pollinia being removed than returned, because of pollinator foraging behaviour. Patterns of insect visitation to orchids are influenced by inflorescence and labellum characters, such as floral spurs.

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17

Toscano, de Brito Antonio Luiz Viera. "Systematic studies in the subtribe Ornithocephalinae (Orchidaceae)." Thesis, University of Reading, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.386911.

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18

Khayota, Beatrice N. "Systematics of the genus Ansellia Lindl. (Orchidaceae)." Thesis, University of Reading, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.283021.

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19

Ryan, Angela. "A phylogenetic assessment of Lycaste and Anguloa (Orchidaceae)." Thesis, University College London (University of London), 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.252249.

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20

Goldman, Douglas H. "Systematics of Calopogon and the tribe Arethuseae (Orchidaceae) /." Digital version accessible at:, 2000. http://wwwlib.umi.com/cr/utexas/main.

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21

Qamaruz-Zaman, Faridah. "Conservation genetics of rare and endangered British orchids." Thesis, University of Cambridge, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.621726.

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22

Tamang, Ranju. "Micropropagation of some orchids of darjeeling and sikkim himalayas." Thesis, University of North Bengal, 2011. http://hdl.handle.net/123456789/1437.

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23

Bichsel, Rebecca Gayle. "Determining the nutritional requirements for optimizing flowering of the nobile dendrobium as a potted orchid." [College Station, Tex. : Texas A&M University, 2006. http://hdl.handle.net/1969.1/ETD-TAMU-1116.

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24

Chan, Man-chung. "Genetic diversity and relationships of spiranthes sinensis, S. spiralis, and S. hongkongensis (orchidaceae) as revealed by RAPD and cpDNA markers /." Hong Kong : University of Hong Kong, 1997. http://sunzi.lib.hku.hk/hkuto/record.jsp?B19324200.

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25

Kanjilal, Biswajit. "Biotechnological approach towards conservation of certain endangered orchids of North Bengal." Thesis, University of North Bengal, 1999. http://hdl.handle.net/123456789/928.

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26

Bhaumick, Debangshu. "Developmental biology and tissue culture studies in some commercially important orchids." Thesis, University of North Bengal, 1991. http://hdl.handle.net/123456789/898.

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27

Saxon, Herbert. "The molecular biology of orchids : transformation by Agrobacterium Tumefaciens and DNA fingerprinting." Virtual Press, 1995. http://liblink.bsu.edu/uhtbin/catkey/941575.

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The work reported here was done at the Wheeler Orchid Collection and Species Bank and the Department of Biology at Ball State University. We have developed a research teaching program with two applied research goals: genetically transforming and DNA fingerprinting orchid tissue. As part of their molecular biology education, students have investigated the genetic transformation of orchids for mitigating viral symptoms and the identification of unknown orchids by DNA fingerprinting. In a second application of the technology, DNA fingerprinting has been used to determine evolutionary relationship

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28

Tsui, Yuk-chun Prisca, and 徐玉珍. "Conservation and propagation of wild orchids in Hong Kong." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1992. http://hub.hku.hk/bib/B31210570.

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29

Powell, Martyn P. "Evolutionary ecology of neotropical orchids, with emphasis on Oncidiinae." Thesis, University of Reading, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.494102.

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This thesis investigates speciation in Neotropical orchids, with a focus on the subtribe Oncidiinae, which has undergone a dramatic radiation in the Neotropics. A near-complete species-level phylogeny of the Tolumnia clade (a subset of the Oncidiinae), comprising 47 of the 51 currently recognised species, based on multiple plastid (trnH-psbA, trnL-F, rps16) and nuclear DNA regions (ITS and ETS) provides a well resolved and robust framework from which to address questions about the evolutionary history of this group. It also permits the clarification of the taxonomic status of certain anomalous

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30

Roberts, David Lesford. "Reproductive biology and conservation of the orchids of Mauritius." Thesis, Aberystwyth University, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.367505.

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31

Chesselet, Pascale Claude Marcelle Henriette. "Systematic implications of leaf anatomy and palynology in the Disinae and Coryciinae (Orchidaceae)." Master's thesis, University of Cape Town, 1989. http://hdl.handle.net/11427/18698.

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Pollen morphology of 8 species (TEM), 86 species (SEM), and leaf anatomy of 62 species (LM), were surveyed in the Oisinae, Coryclinae and, as outgroup taxa, the Orchideae and Satyriinae. Characters extracted from observations made of leaf anatomy and pollen were analysed using cladistic methods, and assessed in relation to the present phylogeny of the group. Leaf anatomy data gave little phylogenetic information. Sclerification associated with vascular bundles was systematically useful. Pollen data served to resolve taxa at the subtribal level. Both data sets provided evidence of relationship

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32

Yam, Tim-wing, and 任添榮. "Conservation, ecology and propagation of the wild orchids of HongKong." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1988. http://hub.hku.hk/bib/B31231731.

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33

Ackerman, Rodney Rex. "The effects of complex additives and growth regulators on the growth and clonal propagation of Phalaenopsis orchids." Virtual Press, 1988. http://liblink.bsu.edu/uhtbin/catkey/546145.

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The goal of this study was two fold, the first was to determine the effect of different basal medium formulationsand medium supplements (complex additives and growth hormones) on the development and growth rate of Phalaenopsis orchids, while the second goal was to find or develop an efficent method for the clonal propagation of Phalaenopsis orchids.MethodsThe first part of this study was further subdivided in to several phases; the first of these involved a comparative study of the germination of Phalaenopsis ovules on six different basal medium formulations and seven different sets of medium

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34

Stewart, Scott L. "Integrated conservation of Florida Orchidaceae in the genera Habenaria and Spiranthes : model orchid conservation systems for the Americas /." View online, 2007. http://etd.fcla.edu/UF/UFE0021367/stewart_s.pdf.

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35

Devey, Dion Stuart. "MARC RecordSystematics and conservation of Mediterranean insect-mimicking orchids (Ophrys)." Thesis, University of Reading, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.494444.

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Historically, Ophrys morphological taxonomy and species delimitation have been controversial, with treatments inferring from 16 species plus 34 subspecies to as many as 252 species forming 32 complexes. Highly variable, yet possibly convergent, morphologies and paucity of sequence variation have hindered production of a robust phylogenetic framework. This project generated phylogenies and ordinations from nuclear and plastid DNA sequencing, amplified fragment length polymorphism (AFLP) and morphometric data, with the ultimate aims of producing a robust framework as a basis for more rigorous sp

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36

Nam, Kam-shing, and 藍金成. "Conservation of Hong Kong wild orchids by leaf tip culture." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1995. http://hub.hku.hk/bib/B31212591.

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37

Newman, Belinda. "Orchids as Indicators of Ecosystem Health in Urban Bushland Fragments." Thesis, Newman, Belinda (2009) Orchids as Indicators of Ecosystem Health in Urban Bushland Fragments. PhD thesis, Murdoch University, 2009. https://researchrepository.murdoch.edu.au/id/eprint/2374/.

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In this thesis I investigate the utility of orchids as indicators of ecosystem health. The study areas were urban bushland fragments on the Swan Coastal Plain, a global biodiversity hotspot. The study focuses on the abundance, reproductive success, mycorrhizal abundance and seedling biomass accumulation of a suite of native terrestrial orchids common to Perth’s urban bushland fragments. A critical factor in exploring the ecological responses of these orchids to site condition and their application as indicators of ecosystem health is the assessment of the ecosystem health of each of the study

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38

Oscar, Alejandro Perez Escobar [Verfasser], and Marc [Akademischer Betreuer] Gottschling. "Molecular phylogenetics, evolution of sexual systems and historical biogeography of Darwin's favourite orchids (Catasetinae) and Swan orchids (Cycnoches Lindl.) / Perez Escobar Oscar Alejandro. Betreuer: Marc Gottschling." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2016. http://d-nb.info/1110749163/34.

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39

Hutchinson, Chad M. "Agrobacterium tumefaciens mediated transformation of orchid tissue with the sense and antisense coat protein genes from the odontoglossum ringspot virus." Virtual Press, 1992. http://liblink.bsu.edu/uhtbin/catkey/834608.

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This research was an attempt to use a dicot transformation vector to transform a monocot. The initial purpose of this thesis was to transform orchids with the sense and antisense coat protein genes from the Odontoglossum ringspot virus (ORSV) in an effort to mitigate viral symptoms in transgenic plants using the transformation vector, Agrobacterium tumefaciens. However, it soon became apparent that much time would be needed to develop a transformation protocol. The transformation vectors used included the Agrobacterium tumefaciens disarmed strain LBA4404 with the binary plasmid pB1121, the dis

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40

Quiroga, Fernandez Ana Isabel, and Yunfeng Wang. "Female Entrepreneurs - Orchids in the Forest : Conditions for female start-ups." Thesis, Linnéuniversitetet, Ekonomihögskolan, ELNU, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-12435.

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The last century has witnessed blooming achievements of females as rising workforce in modern society. With their active participation in business world recently, female entrepreneurship research has caught extensive attention globally, not only from academic field, but also from market entities, policy makers, social activists, as well as broad masses, concerning the social and economic contribution of female-started entreprises. Current studies within this topic concentrate on two issues: the difference between male and female entrepreneurs; demographic research for certain countries, region

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41

Collins, Margaret Thora. "Factors affecting the recovery of orchids in a post-mining landscape." University of Western Australia. School of Earth and Geographical Sciences, 2008. http://theses.library.uwa.edu.au/adt-WU2008.0022.

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[Truncated abstract] Currently, Alcoa World Alumina Australia (Alcoa) mines and undertakes procedures to rehabilitate approximately 550 ha of jarrah forest each year at two open-cut bauxite mines in South-West Western Australia. Alcoa aims to establish a self-sustaining jarrah forest ecosystem that maintains the functions of the landscape prior to mining, including biodiversity, on areas that have been mined for bauxite. Indigenous terrestrial orchids form a significant proportion of the indigenous geophytic plant species that either fail to colonise rehabilitated areas or do so very slowly. T

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42

Lukasiewicz, Magdalena J. "Maternal investment, pollination efficiency and pollen, ovule ratios in Alberta orchids." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ48023.pdf.

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43

Schweiger, Julienne M. I. [Verfasser], and Gerhard [Akademischer Betreuer] Gebauer. "Partial mycoheterotrophy in orchids / Julienne M.-I. Schweiger ; Betreuer: Gerhard Gebauer." Bayreuth : Universität Bayreuth, 2019. http://d-nb.info/117852602X/34.

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44

Morris, Lynda M. "An analysis of the population genetics of orchids using protein electrophoresis." Thesis, University of Essex, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.397368.

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45

Stökl, Johannes. "Pollinator driven radiation in sexually deceptive orchids of the genus Ophrys." [S.l. : s.n.], 2007. http://nbn-resolving.de/urn:nbn:de:bsz:289-vts-60423.

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46

Ong, Jamie. "In bed with viruses: The partnership between orchids, fungi and viruses." Thesis, Ong, Jamie (2016) In bed with viruses: The partnership between orchids, fungi and viruses. PhD thesis, Murdoch University, 2016. https://researchrepository.murdoch.edu.au/id/eprint/37275/.

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The Orchidaceae is the largest and most diverse angiosperm family comprising of five subfamilies, over 800 genera and over 26,000 species. In Western Australia, there are over 450 indigenous orchid species across 40 genera, concentrated predominately within the South West Australian Floristic Region, but with a few species in the tropical Kimberley. The southern species are all terrestrial and most belong to the Diurideae tribe, which are primarily restricted to Australia and New Zealand. To varying degrees, orchids rely on associations with other organisms, particularly fungi for nutrient pro

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47

Nguyen, Quang Duy. "Studies of Cryptostylis ovata and Microtis media orchids from Western Australia." Thesis, Nguyen, Quang Duy (2021) Studies of Cryptostylis ovata and Microtis media orchids from Western Australia. PhD thesis, Murdoch University, 2021. https://researchrepository.murdoch.edu.au/id/eprint/63106/.

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Cryptostylis ovata is the only evergreen indigenous orchid that grows in south-western Australia; all the others are deciduous. It uses a classical ‘k’ strategy to reproduce, thus it has a lifespan of decades or longer, and although it produces large numbers of seed when its flowers are pollinated, it appears that only a tiny proportion germinate. On the other hand, Microtis media is the classical ‘r’ breeder in that it lives typically from only one to a few years, and its flower spike generates thousands of seed, which freely germinate. We studied mycorrhizal associations in C. ovata and

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48

LUSSU, MICHELE. "Patterns of reproductive isolation in Sardinian orchids of the subtribe Orchidinae." Doctoral thesis, Università degli Studi di Cagliari, 2019. http://hdl.handle.net/11584/260404.

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Abstract Orchids are globally well known for their highly specialized mechanisms of pollination as a result of their complex biology. Based on natural selection, mutation and genetic drift, speciation occurs simultaneously in organisms linking them in complexes webs called ecosystems. Clarify what a species is, it is the first step to understand the biology of orchids and start protection actions especially in a fast changing world due to human impact such as habitats fragmentation and climate changes. I use the biological species concept (BSC) to investigate the presence and eventually the s

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49

佟穗海 and Shui-hoi Tung. "An ultrastructural study of megasporogenesis in oryza sativa, cymbidium sinense and phaius tankervilliae." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1997. http://hub.hku.hk/bib/B31214678.

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50

陳文頌 and Man-chung Chan. "Genetic diversity and relationships of spiranthes sinensis, S. spiralis, and S. hongkongensis (orchidaceae) as revealed by RAPD andcpDNA markers." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1997. http://hub.hku.hk/bib/B31214952.

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