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Relevant bibliographies by topics / Maize leaf disease / Dissertations / Theses

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Dissertations / Theses on the topic 'Maize leaf disease'

Author: Grafiati

Published: 7 June 2025

Last updated: 2 August 2025

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1

Donahue, Patrick J. "Inheritance of reactions to gray leaf spot and maize dwarf mosaic virus in maize and their associations with physiological traits." Diss., Virginia Polytechnic Institute and State University, 1989. http://hdl.handle.net/10919/54518.

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Gray leaf spot, caused by Cercospora zeae-maydis, can be a yield-limiting factor in maize where continuous minimum tillage practices are followed. Commercial corn hybrids were evaluated for response to gray leaf spot for seven years at two Virginia locations (Shenandoah and Wythe Counties) and one year at a third location in Virginia (Montgomery County). Yield losses, when comparing resistant to susceptible classes, were approximately 2,000 kg ha⁻¹ at Wythe County in 1982, 750 kg ha⁻¹ at Shenandoah County in 1984, and 2,150 kg ha⁻¹ at Montgomery County in 1988. The inheritance of reaction to g

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2

Lehmensiek, Anke. "Genetic mapping of gray leaf spot resistance genes in maize." Thesis, Stellenbosch : Stellenbosch University, 2000. http://hdl.handle.net/10019.1/51776.

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Thesis (PhD)--Stellenbosch University, 2000.<br>ENGLISH ABSTRACT: Gray leaf spot (GLS) of maize, caused by the fungus Cercospora zeae-maydis, can reduce grain yields by up to 60% and it is now recognized as one of the most significant yield-limiting diseases of maize in many parts of the world. The most sustainable and long-term management strategy for GLS will rely heavily on the development of high-yielding, locally adapted GLS resistant hybrids. Molecular markers could be useful to plant breeders to indirectly select for genes affecting GLS resistance and to identify resistance genes

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3

Du, Min. "A greenhouse screening method for resistance to gray leaf spot in maize." Thesis, Virginia Tech, 1993. http://hdl.handle.net/10919/42953.

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4

Christie, Nanette. "Transcriptional regulation underlying the quantitative genetic response of maize to grey leaf spot disease." Thesis, University of Pretoria, 2014. http://hdl.handle.net/2263/79215.

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Cercospora zeina causes grey leaf spot (GLS), a yield-limiting disease on maize. The main objective of this study was to exploit maize gene expression data to dissect the quantitative disease response to C. zeina infection. The project addresses the hypothesis that there is an underlying DNA polymorphism that gives rise to a change in gene expression, which in turn affects GLS disease severity. Genomic and functional annotation of the reporters on an Agilent 44K maize microarray was carried out. This microarray was used for global gene expression profiling of earleaf samples collected from 100

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5

Ntuli, Jean Felistas. "Characterisation of phytoalexin accumulation in maize inoculated with Cercospora zeina, the causal organism of grey leaf spot disease." Master's thesis, University of Cape Town, 2016. http://hdl.handle.net/11427/20848.

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Grey Leaf Spot (GLS) is a fungal disease of Zea mays (maize) that is caused by Cercospora zeina. It thrives in sub-tropical climates and causes devastating crop losses of up to 60% in southern Africa where maize is grown as a staple food source. Phytoalexins are low molecular weight anti-microbial bio-chemicals that are synthesised in planta in response to biotic stress. Related studies have characterised many phytoalexins produced in various plants against several diseases. In maize, phytoalexins fall into to two terpenoid groups: kauralexins and zealexins. To date no studies have been carrie

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6

Gordon, Stuart G. "Genetic Mapping and Components of Resistance to Cercospora Zeae-Maydis in Maize." The Ohio State University, 2003. http://rave.ohiolink.edu/etdc/view?acc_num=osu1041605948.

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7

Deng, Yinghai 1966. "Development and disease resistance of leafy reduced stature maize (Zea mays L.)." Thesis, McGill University, 2001. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=38177.

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Previous studies on Leafy reduced-stature (LRS) maize found that it had extremely early maturity and a higher harvest index (HI), leading to high yields for its maturity rating. Whether this apparent high HI is relaxed to its earliness, or can also exist among the medium or late maturity LRS maize has not been previously investigated. It was also of interest to know if the traits that produced the LRS canopy structure have pleiotropic effects on root architecture. Finally, field observations indicated that LRS maize had a lower incidence of common smut. It is not known whether this apparent re

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8

Dhau, Inos. "Detection, identification, and mapping of maize streak virus and grey leaf spot diseases of maize using different remote sensing techniques." Thesis, University of Limpopo, 2019. http://hdl.handle.net/10386/2866.

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Thesis (PhD. (Geography)) --University of Limpopo, 2019<br>Of late climate change and consequently, the spread of crop diseases has been identified as one of the major threat to crop production and food security in subSaharan Africa. This research, therefore, aims to evaluate the role of in situ hyperspectral and new generation multispectral data in detecting maize crop viral and fungal diseases, that is maize streak virus and grey leaf spot respectively. To accomplish this objective; a comparison of two variable selection techniques (Random Forest’s Forward Variable, (FVS) and Guided Regulari

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9

Khethisa, Joang Adolf. "A highly accessible application for detection and classification of maize foliar diseases from leaf images." Master's thesis, University of Cape Town, 2017. http://hdl.handle.net/11427/25359.

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Crop diseases are a major impediment to food security in the developing world. The development of cheap and accurate crop diagnosis software would thus be of great benefit to the farming community. A number of previous studies, utilizing computer vision and machine-learning algorithms, have successfully developed applications that can diagnose crop diseases. However, these studies have primarily focussed either on developing large scale remote sensing applications more suited for large scale farming or on developing desktop/laptop applications and a few others on developing high end smartphone

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10

Galiano, Carneiro Ana Luísa [Verfasser], and Thomas [Akademischer Betreuer] Miedaner. "Genomics-assisted breeding strategies for quantitative resistances to Northern corn leaf blight in maize (Zea mays L.) and Fusarium diseases in maize and in triticale (× Triticosecale Wittm.) / Ana Luísa Galiano Carneiro ; Betreuer: Thomas Miedaner." Hohenheim : Kommunikations-, Informations- und Medienzentrum der Universität Hohenheim, 2021. http://d-nb.info/123663019X/34.

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11

Bucheyeki, Tulole Lugendo. "Characterization and genetic analysis of maize germplasm for resistance to northern corn leaf blight disease in Tanzania." Thesis, 2012. http://hdl.handle.net/10413/8730.

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The majority of farmers in Tanzania have not yet adopted modern maize varieties and still cultivate landraces and open pollinated varieties (OPVs) with low production potential and susceptible to diseases like maize streak virus (MSV), grey leaf spot (GLS) and northern corn leaf blight (NLB). The NLB disease is among the major causes of low yield and has been reported in all 21 maize growing regions in Tanzania. Breeding for host plant resistance with high yielding potential and involving the community in the breeding process is expected to address the problem of low yield, NLB disease suscept

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12

Kwena, Philip Onyimbo. "Recurrent selection for gray leaf spot (GLS) and phaeosphaeria leaf spot (PLS) resistance in four maize populations and heterotic classification of maize germplasm from western Kenya." Thesis, 2007. http://hdl.handle.net/10413/747.

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13

Sibiya, Julia. "Breeding investigations for resistance to Phaeosphaeria Leaf Spot (PLS) and other important foliar diseases and a study of yield stability in African maize germplasm." Thesis, 2009. http://hdl.handle.net/10413/8136.

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14

Niemann, Nicolaas Johannes Jacobus. "Molecular characterisation of the causal agent of bacterial leaf streak of maize / Nicolaas Johannes Jacobus Niemann." Thesis, 2015. http://hdl.handle.net/10394/15478.

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All members of the genus Xanthomonas are considered to be plant pathogenic, with specific pathovars infecting several high value agricultural crops. One of these pathovars, X. campestris pv. zeae (as this is only a proposed name it will further on be referred to as Xanthomonas BLSD) the causal agent of bacterial leaf steak of maize, has established itself as a widespread significant maize pathogen within South Africa. Insufficient information about the present distribution of the pathogen is available. The main aim of the study was thus to isolate and characterise the pathogen using molecular

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15

Ramos, Romero Lucia. "Occurrence and Importance of Foliar Diseases on Maize (Zea mays L.) in Central Europe." Doctoral thesis, 2016. http://hdl.handle.net/11858/00-1735-0000-002E-E448-3.

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16

Boudreau, Mark Alan 1958. "Effects of intercropping beans with maize on angular leaf spot and rust of beans." Thesis, 1991. http://hdl.handle.net/1957/36577.

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Experiments were performed to determine the nature of maize influence on bean disease in additive-type intercrops. Overall effects of intercrops on angular leaf spot (caused by Phaeoisariopsis griseola) in Kenya indicated >23% reductions (P<0.05) in area under the disease progress curve (AUDPC) in two of three season-site combinations. Fertilization tended to increase disease (135-205%, P<0.10), but changes in bean density or planting pattern had no effect. Intercrops reduced temperature and wind velocity, but increased relative humidity. A 27% AUDPC reduction (P=0.07) in bean rust (caused by

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