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Dissertations / Theses on the topic 'Bunt (Disease of wheat)'

Author: Grafiati

Published: 4 June 2021

Last updated: 28 July 2024

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1

Ottman, Michael. "Cultural Practices for Karnal Bunt Control." College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 2002. http://hdl.handle.net/10150/147014.

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2 pp.<br>The weather near heading is the overriding factor in disease development. Cultural practices may be partially effective in controlling Karnal bunt, but cannot eliminate the disease completely.

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2

Keach, James E. "Resistance to common bunt in the USDA Aegilops tauschii collection." Pullman, Wash. : Washington State University, 2009. http://www.dissertations.wsu.edu/Thesis/Fall2009/j_keach_112009.pdf.

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Thesis (M.S. in crop science)--Washington State University, December 2009.<br>Title from PDF title page (viewed on Jan. 12, 2010). "Department of Crop and Soil Sciences." Includes bibliographical references.

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3

Ottman, Michael J. "Cultural Practices for Karnal Bunt Control." College of Agriculture, University of Arizona (Tucson, AZ), 2015. http://hdl.handle.net/10150/552950.

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Originally Published: 2002; Revised<br>3 pp.<br>Environmental conditions between awn emergence and the end of flowering is the overriding factor in disease development. 2 The University of Arizona Cooperative Extension Cultural practices may be partially effective in controlling Karnal bunt but cannot eliminate the disease completely. Karnal bunt is most likely to be found in areas where lodging or water ponding have occurred.

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4

He, Chunlin. "Inheritance of resistance to common bunt, Tilletia caries and T. foetida, and identification of RAPD markers linked to bunt resistance in wheat." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape7/PQDD_0018/NQ44667.pdf.

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5

McGinley, Susan. "Karnal Bunt Disease: Research Focuses on its Persistence in Soil." College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 1998. http://hdl.handle.net/10150/622300.

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6

Zwart, Rebecca Susan. "Genetics of disease resistance in synthetic hexaploid wheat /." St. Lucia, Qld, 2003. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe17369.pdf.

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7

Pietravalle, SteÌphane. "Modelling weather/disease relationships in winter wheat diseases." Thesis, University of Reading, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.402602.

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8

Kock, Appelgren Petra S. "Investigating disease tolerance to Zymoseptoria tritici in wheat." Thesis, University of Nottingham, 2017. http://eprints.nottingham.ac.uk/41161/.

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Disease tolerance is defined as the ability to maintain grain yield in the presence of disease and could be a potential defence mechanism to be incorporated into breeding programmes. It is an attractive goal, as disease tolerance has the potential to be a broad-spectrum, durable defence mechanism while exerting little selection pressure on pathogen populations. Relatively little is known about how disease tolerance is conferred, but most of the hypotheses suggest resource capture and resource-use traits such as large green canopy area, increased light extinction coefficient and a high source t

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9

Soleimani, Pary Mohammad Javad. "Epidemiology of the wheat stem-base disease complex in a wheat-clover bicropping system." Thesis, University of Reading, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.339492.

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10

Robbins, Amber Marie. "Dwarfing genes in Spring wheat an agronomic comparison of Rht-B1, Rht-D1, and Rht8 /." Thesis, Montana State University, 2009. http://etd.lib.montana.edu/etd/2009/robbins/RobbinsA1209.pdf.

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11

Tibben, Arend. "What is knowledge but grieving? on psychological effects of presymptomatic DNA-testing for Huntington's disease /." [S.l.] : Rotterdam : [The Author] ; Erasmus University [Host], 1993. http://hdl.handle.net/1765/13748.

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12

Elahinia, S. A. "Resistance to wheat to Puccinia striiformis." Thesis, University of Salford, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.384166.

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13

Somani, D. "Exploring wheat-Bipolaris sorokiniana interaction during spot blotch disease." Thesis(Ph.D.), CSIR-National Chemical Laboratory , Pune, 2019. http://dspace.ncl.res.in:8080/xmlui/handle/20.500.12252/5837.

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Chapter 1: Introduction Wheat is the second most widely grown and consumed food crop of the world after rice, and is the staple food of around 35% of the world’s population. The present wheat production is about 749 million tons (FAO, 2016; http://www.fao.org/faostat) and to feed the world’s ever-growing population with annual growth rate of 2.6%, there will be a requirement to produce about 1040 million tons of wheat in 2020. To reach this target, it is crucial to keep the crop free from various biotic as well as abiotic stresses. In recent years, spot blotch caused by Bipolaris sorokiniana

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14

Arraiano, Lia Susana. "Genetics of resistance of wheat to septoria tritici blotch." Thesis, University of East Anglia, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.390648.

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The research described in this týesis was focused on achieving a better understanding of the genetics of resistance of wheat to septoria tritici blotch (Mycosphaerella graminicola). Firstly, a detached leaf technique that could be a useful complement to field trials and an alternative to whole seedling assays in assessing cultivar resistance and investigating the genetics of the host-pathogen interaction was developed. Sets of inter-varietal substitution lines, developed at the John Innes Centre, involving known and possible sources of resistance to septoria tritici blotch, were tested with se

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15

Horn, Marizanne. "Transfer of genetic resistance to the Russian wheat aphid from rye to wheat." Thesis, Stellenbosch : Stellenbosch University, 1997. http://hdl.handle.net/10019.1/55770.

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Thesis (MSc.) -- Stellenbosch University, 1997.<br>ENGLISH ABSTRACT: An octoploid triticale was derived from the F1 of a Russian wheat aphid resistant rye, 'Turkey 77', and 'Chinese Spring' wheat. The alloploid was crossed (a) to common wheat, and (b) to the 'Imperial' rye to 'Chinese Spring' disomic addition lines. F2 progeny from these crosses were tested for Russian wheat aphid resistance and C-banded. Resistance was found to be associated with chromosome arm 1RS of the 'Turkey 77' rye genome. This initial work was done by MARAIS (1991) who made a RWA resistant, monotelosomic 1RS (

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16

Carter, Arron Hyrum. "Identification of quantitative trait loci and molecular markers for disease, insent and agronomic traits in spring wheat (Triticum aestivum L.)." Pullman, Wash. : Washington State University, 2009. http://www.dissertations.wsu.edu/Dissertations/Spring2009/A_Carter_041509.pdf.

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17

Parker, Garry David. "Identification of molecular markers linked to quantitative traits and disease resistance genes in wheat (Triticum aestivum L.) /." Title page, contents and summary only, 1998. http://web4.library.adelaide.edu.au/theses/09PH/09php239.pdf.

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18

Pedler, Judith F. "Resistance to take-all disease by Mn efficient wheat cultivars /." Title page, table of contents and summary only, 1994. http://web4.library.adelaide.edu.au/theses/09PH/09php371.pdf.

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19

Ellis, Sybil Adeen. "The pathology of cereal blackpoint, its effects on grain quality and potential control." Thesis, University of Bristol, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.337288.

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20

Hysing, Shu-Chin. "Genetic resources for disease resistance breeding in wheat : charaterization and utilization /." Alnarp : Department of Crop Science, Swedish University of Agricultural Sciences, 2007. http://epsilon.slu.se/200709.pdf.

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21

Abdullah, Araz Sedqi. "Pathogen Interactions in Co-infected Wheat Determine Disease Ontogeny and Severity." Thesis, Curtin University, 2019. http://hdl.handle.net/20.500.11937/80390.

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This PhD bridges the gap between the heterogeneity of plant diseases in the field and the emerging field of molecular pathology. It uses a three-way system consisting of the wheat host and two fungi. A range of techniques relating to plant pathology and histology as well as advanced molecular biology and cytology were used. The objective of the thesis was to study disease progress and pathogen interactions in wheat plants co-infected by two major fungi.

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22

Khan, Imtiaz Ahmed. "Utilisation of molecular markers in the selection and characterisation of wheat-alien recombiant chromosomes." Title page, contents and summary only, 1996. http://web4.library.adelaide.edu.au/theses/09PH/09phk451.pdf.

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Bibliography: leaves 137-163. his is a comprehensive study of induced homoeologous recombination along most of the complete genetic length of two homoeologous chromosomes in the Triticeae (7A of common wheat and 7Ai of Agropyron intermedium), using co-dominant DNA markers. Chromosome 7Ai was chosen as a model alien chromosome because is has been reported to carry agronomically important genes conferring resistance to stem rust and barley yellow dwarf virus on its short and long arms, respectively.

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23

Wells, Vanessa. "Discovery and Molecular Mapping of Rust Resistance in Wheat." Thesis, The University of Sydney, 2018. http://hdl.handle.net/2123/18829.

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This investigation covers genetics of rust resistance in common wheat and durum wheat. Stripe rust resistance in AUS26615 was conferred by three QTL and these were temporarily named; QYr.sun-1B, QYr.sun-3D and QYr.sun-6B. QYr.sun-1B represented the previously named APR gene Yr29. The other two QTL appear to be new. The detection of QYr.sun-3D in late sown experiment points to its better expression at relatively higher temperature regimes. The all stage resistance gene, YrAW12, carried by AUS26674, was shown to be Yr34 based on its co-segregation with Yr34-linked marker sunKASP_112 and similar

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24

Sharma, Sapna. "Genetics of Wheat Domestication and Septoria Nodorum Blotch Susceptibility in Wheat." Thesis, North Dakota State University, 2019. https://hdl.handle.net/10365/29767.

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T. aestivum ssp. spelta Iranian type has long been thought to potentially be the direct non-free threshing hexaploid progenitor. I evaluated a RIL population derived from a cross between CS and Iranian spelta accession P503 to identify loci suppressing free-threshabilty in P503. Identification of QTL associated with threshability in region known to harbor the Tg2A gene, and an inactive tg2D allele supported the hypothesis of Iranian spelta being derived from a more recent hybridization between free-threshing hexaploid and emmer wheat. Parastagonospora nodorum is an important fungal pathogen an

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25

Hague, Rachel Elise. "Genetics of quantitative resistance to powdery mildew in Fenman winter wheat." Thesis, University of East Anglia, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.267461.

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26

Forsström, Per-Olov. "Broadening of mildew resistance in wheat /." Alnarp : Dept. of Crop Science, Swedish Univ. of Agricultural Sciences (Institutionen för växtvetenskap, Sveriges lantbruksuniv.), 2002. http://epsilon.slu.se/a336.pdf.

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27

Wessels, Willem Gerhardus. "Mapping genes for stem rust and Russian wheat aphid resistance in bread wheat (Triticum aestivum)." Thesis, Stellenbosch : Stellenbosch University, 1997. http://hdl.handle.net/10019.1/55580.

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Thesis ( MScAgric) -- Stellenbosch University, 1997.<br>ENGLISH ABSTRACT: Stem rust is considered the most damaging of the wheat rusts causing yield losses of more than 50% in epidemic years. Similarly, Russian wheat aphids (RWA) can be regarded as one ofthe most devastating insect pests of wheat. Yield losses due to R W A primarily result from a reduction in plant resources (sucking plant sap). Secondary losses are incurred by viruses transmitted during feeding. Mapping disease and insect resistance genes that are effective against prevailing pathotypes and biotypes of South Africa will

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28

Scharf, Peter C. "Nitrogen loss inhibitors in intensively managed winter wheat." Thesis, Virginia Polytechnic Institute and State University, 1988. http://hdl.handle.net/10919/52072.

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Several potential pathways exist for significant nitrogen loss from nitrogen fertilizer applied to winter wheat in Virginia. A number of materials have been previously identified which inhibit steps in one or more of these loss pathways. Ammonium polyphosphate, ammonium thiosulfate, dicyandiamide, potassium chloride, and monoammonium phosphate were chosen for use in the present study. They were mixed, singly and in combinations, with UAN solution or urea solution and spring top-dressed on soft red winter wheat. Experiments were conducted over two growing seasons at two locations each season. N

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29

Barnett, Stephen J. "Directed evolution of disease suppressive bacteria : the role of root lesions on take - all diseased wheat." Title page, contents and abstract only, 1998. http://hdl.handle.net/2440/37768.

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Take - all disease ( caused by Gaeumannomyces graminis var tritici, Ggt ) can be suppressed by soil microorganisms after continuous monoculture of wheat ( take - all decline, TAD ). Fluorescent pseudomonads have been implicated in this suppression. Two strategies for controlling take - ail are the in situ development of disease suppressive soil, and / or the application of a biocontrol agent. However, TAD takes up to 10 years to develop after initially high levels of disease, and the performance of bacterial biocontrol agents has been inconsistent. It is not known what environmental factors se

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30

Njom, Henry Akum. "Mechanism and synchronicity of wheat (Triticum aestivum) resistance to leaf rust (Puccinia triticina) and Russian wheat aphid (Duiraphis noxia) SA1." Thesis, University of Fort Hare, 2016. http://hdl.handle.net/10353/2700.

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Wheat (Triticum aestivum and T. Durum) is an extremely important agronomic crop produced worldwide. Wheat consumption has doubled in the last 30 years with approximately 600 million tons consumed per annum. According to the International Maize and Wheat Improvement Center, worldwide wheat demand will increase over 40 percent by 2020, while land as well as resources available for the production will decrease significantly if the current trend prevails. The wheat industry is challenged with abiotic and biotic stressors that lead to reduction in crop yields. Increase knowledge of wheat’s biochemi

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31

Eddy, Rachel. "Logistic regression models to predict stripe rust infections on wheat and yield response to foliar fungicide application on wheat in Kansas." Thesis, Manhattan, Kan. : Kansas State University, 2009. http://hdl.handle.net/2097/2298.

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32

Lemes, Da Silva Cristiano. "Genomic approaches for mapping and predicting disease resistance in wheat (Triticum aestivum L.)." Diss., Kansas State University, 2017. http://hdl.handle.net/2097/38555.

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Doctor of Philosophy<br>Genetics Interdepartmental Program<br>Allan K. Fritz<br>Wheat diseases cause significant economic losses every year. To ensure global food security, newly released cultivars must possess increased levels of broadly-effective resistance against wheat pathogens, acceptable end-use quality, and high yield potential. Genetic host resistance stands out from other management strategies as the most viable option for controlling diseases. New genotyping platforms allow whole genome marker discovery at a relatively low cost, favoring the identification of novel loci underlying t

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33

Yalvac, Kenan. "Molecular markers as selection tools for introgression of alien disease resistance into wheat." Thesis, University of East Anglia, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.267261.

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34

Poudel, Roshan Sharma. "The Acquisition of Useful Disease Resistance Genes for Hard Red Winter Wheat Improvement." Thesis, North Dakota State University, 2015. https://hdl.handle.net/10365/27821.

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This study was part of a larger pre-breeding effort to develop new parental materials carrying useful genes for disease resistance and adaptation. Firstly, marker-assisted backcrosses were employed to transfer and pyramid combinations of disease resistance genes (Fhb1, Lr34, Lr53, Sr2, Sr26, Sr39, and Sr50) and a reduced height gene (Rht-B1b) into the variety Norstar. Following the third backcross to Norstar, the various backcrossed progenies were inter-mated to derive progenies having combinations of Fhb1 and Rht-B1b plus the targeted leaf and/or stem rust resistance genes. Five NILs (each ca

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35

Fatima, Fizza. "Genome-Wide Association Study for Disease Traits In Wheat and Its Wild Relatives." Thesis, Université d'Ottawa / University of Ottawa, 2020. http://hdl.handle.net/10393/40900.

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Wheat is the most widely grown crop in the world and as such, is an essential source of energy and nutrition. The challenges that breeders presently face is to increase production to feed the rising population of the world, while also accounting for climate change, pollution, water and environmental stresses. As genetic uniformity of modern cultivars has increased vulnerability to pests and diseases, the wild relatives of wheat offer a rich source of genetic diversity and stress tolerance traits, that can be harnessed and transferred in to modern wheat. In this study, we used array-based geno

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36

Golegaonkar, Prashant G. "Genetic and molecular analysis of resistance to rust diseases in barley." Thesis, The University of Sydney, 2007. http://hdl.handle.net/2123/3549.

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The responses of 92 barley genotypes to selected P. hordei pathotypes was assessed in greenhouse tests at seedling growth stages and in the field at adult plant growth stages to determine known or unknown resistances. On the basis of multipathotype tests, 35 genotypes were postulated to carry Rph2, Rph4, Rph5, Rph12, RphCantala alone or combinations of Rph2 + Rph4 and Rph1 + Rph2, whereas 52 genotypes lacked detectable seedling resistance to P. hordei. Five genotypes carried seedling resistance that was effective to all pathotypes tested, of which four were believed to carry uncharacterised re

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37

Golegaonkar, Prashant G. "Genetic and molecular analysis of resistance to rust diseases in barley." University of Sydney, 2007. http://hdl.handle.net/2123/3549.

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Doctor of Philosophy<br>The responses of 92 barley genotypes to selected P. hordei pathotypes was assessed in greenhouse tests at seedling growth stages and in the field at adult plant growth stages to determine known or unknown resistances. On the basis of multipathotype tests, 35 genotypes were postulated to carry Rph2, Rph4, Rph5, Rph12, RphCantala alone or combinations of Rph2 + Rph4 and Rph1 + Rph2, whereas 52 genotypes lacked detectable seedling resistance to P. hordei. Five genotypes carried seedling resistance that was effective to all pathotypes tested, of which four were believed to

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38

Brassett, P. R. "Computer simulation of the take-all disease of winter wheat with particular reference to methodology." Thesis, University of Cambridge, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.233678.

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The theory and the practical application of the simulation of root infection of winter wheat by the take-all fungus, <i>Gaeumannomyces graminis</i> var. <i>tritici</i>, are critically evaluated with respect to field epidemics and to infection of seedlings within controlled environments. Several simple models for disease progress in field epidemics are evaluated with respect to field data, including a generalized logistic equation and systems of simple non-linear differential equations, with and without algebraic solutions. An investigation is made of disease heterogeneity in the field and tran

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39

Lennartsson, E. K. M. "Cultural control of take-all : The effect of mixed species cropping and organic soil amendments." Thesis, University of Bristol, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.379661.

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40

Wellings, Colin Ross. "Host: pathogen studies of wheat stripe rust in Australia." Thesis, Department of Agricultural Genetics and Biometry, 1986. http://hdl.handle.net/2123/14544.

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41

Krenz, Jennifer E. "Specificity of quantitatively expressed host resistance to Mycosphaerella graminicola /." Connect to this title online, 2007. http://hdl.handle.net/1957/3813.

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42

Nichols, John Benjamin. "Biology and control of ergot disease (Claviceps purpurea) in F1 hybrid winter wheat production." Thesis, University of Hull, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.359827.

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43

Alizadeh, Mohammad Ali. "Loss of vigour and disease resistance in wheat seeds stored in the Iranian climate." Thesis, University of Salford, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.244836.

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44

Parker, Steven Roy. "Studies on some factors influencing the reliability of disease measurements in winter wheat crops." Thesis, University of Bristol, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.336955.

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45

Osborne, Sarah-Jane. "Exploring the genetic and mechanistic basis of resistance to take-all disease in wheat." Thesis, University of Nottingham, 2017. http://eprints.nottingham.ac.uk/40646/.

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Take-all, caused by the soil-borne ascomycete fungus Gaeumannomyces graminis var. tritici, (Ggt), is a root disease that devastates wheat production worldwide. Current control measures consist of partially effective chemical seed dressings and cultural methods such as crop rotation. There is currently no genetic control of the disease. The first aim of this PhD project was to characterise a range of diploid and hexaploid wheat germplasm that possess a promising level of take-all resistance under field conditions. Both above and below ground phenotyping was carried out and soil moisture probes

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46

Zhang, Jianping. "Studies of the Wheat-rust Disease Pathosystem with a Focus on Resistance Gene Characterisation." Thesis, The University of Sydney, 2018. http://hdl.handle.net/2123/20274.

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Wheat is one of the first domesticated and cultivated crops together with barley. Rust diseases are considered as one of the major threats to wheat production in almost all of the wheat growing areas worldwide and disease control relies mainly on the utilisation of genetic resistance. The general objective of this doctoral study is to reduce the risk of yield loss due to rust diseases by providing genetic knowledge on wheat-rust pathosystems at the molecular level. In this thesis, integrated efforts have been devoted to i: understand rust pathogen populations at the molecular level; ii: charac

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47

Cruz, Christian D. "Wheat blast: quantitative pathway analyses for the Triticum pathotype of Magnaporthe oryzae and phenotypic reaction of U.S. wheat cultivars." Diss., Kansas State University, 2013. http://hdl.handle.net/2097/16387.

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Doctor of Philosophy<br>Department of Plant Pathology<br>William W. Bockus<br>James P. Stack<br>Wheat blast, caused by the Triticum pathotype of Magnaporthe oryzae (MoT), is a serious disease of wheat causing yield failures and significant economic losses during epidemic years in Brazil, Paraguay, and Bolivia. Although outbreaks occur only sporadically, wheat blast is considered a major disease affecting wheat production in South America and may be a threat to the wheat crop in the United States. Wheat is a major crop in the U.S. and wheat exports from the U.S. are important to food security o

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48

Hewitt, Timothy Charles. "Characterisation of Wheat Disease Resistance Genes Through the Application of Molecular Genetics and Deep Sequencing Technology." Thesis, University of Sydney, 2020. https://hdl.handle.net/2123/24423.

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Bread wheat (Triticum aestivum) is a vital crop that supplies ~20% of globally consumed calories. However, fungal pathogens can devastate production in wheat growing regions and pose a major threat to food security. Pathogens can rapidly evolve to overcome genetically resistant varieties so there is much focus on the study of disease resistance genes (R genes) to combat this threat. Cloning specific R genes has been a major effort as the immense size and complexity of the wheat genome means it can take a decade or more to isolate a single R gene using classic map-based methods. However, the ad

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49

Badenhorst, Pieter Engelbertus. "Poging om die Aegilops sharonensis-verhaalde Lr56/Yr38 koringtranslokasie te verkort." Thesis, Stellenbosch : Stellenbosch University, 2008. http://hdl.handle.net/10019.1/3083.

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50

Holdgate, Sarah. "Improving the diversity of resistance mechanisms available in wheat to combat Fusarium ear blight disease." Thesis, Cranfield University, 2009. http://dspace.lib.cranfield.ac.uk/handle/1826/6973.

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Fusarium ear blight (FEB) is a disease of wheat and small grain cereals, caused by the fungi Fusarium culmorum and Fusarium graminearum. The disease causes premature bleaching of spikelets and shrivelling of the grain can result in a direct yield loss. Mycotoxins such as deoxynivalenol produced by the fungus can reduce grain quality. Breeding for resistant wheat cultivars is considered one of the best control options. Previously identified resistance has been reported in the Chinese genotype Sumai 3. The principal aim of this project was to identify novel sources of resistance to FEB. Twenty f

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