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Dissertations / Theses on the topic 'Corn – Diseases and pests – Kansas'

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Published: 4 June 2021

Last updated: 9 February 2022

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1

Thurston, Graham S. (Graham Stanley) 1958. "Host plant resistance and entomogenous nematodes for controlling the northern corn rootworm, Diabrotica barberi (Coleoptera: Chrysomelidae)." Thesis, McGill University, 1987. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=66175.

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2

Chauhan, Ramola. "A study of filamentous viruses in maize and smallgrains." Master's thesis, University of Cape Town, 1985. http://hdl.handle.net/11427/22013.

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Bibliography: pages 175-184.<br>The occurrence of maize dwarf mosaic virus (MDMV) in field grown maize was investigated. For this purpose, maize showing mosiac symptoms was collected from different maize growing areas in South Africa by Prof. M.B. von Wechmar. These samples from Transvaal, Orange Free State and Natal were then investigated for the presence of MDMV and possible strains of this virus. Three virus isolates were purified and partially characterised. These isolates were serologically compared together with a fourth isolate SCMV 4975, obtained from the U.S., to establish strain rela

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3

Midgarden, David Gunder. "Spatial distribution of western corn rootworm (Diabrotica virgifera virgifera Leconte) trap counts and evaluation of a novel method for sampling soil pests of field corn." Thesis, This resource online, 1992. http://scholar.lib.vt.edu/theses/available/etd-06302009-040212/.

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4

Jackson, Tori Lee. "Alternative Controls for Helicoverpazea on Sweet Corn: Phytotoxicity and Pollination Inhibition from Direct Silk Applications." Fogler Library, University of Maine, 2004. http://www.library.umaine.edu/theses/pdf/JacksonTL2004.pdf.

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5

Fandohan, Pascal. "Fusarium infection and mycotoxin contamination in preharvest and stored maize in Benin, West Africa." Thesis, University of Pretoria, 2004. http://hdl.handle.net/2263/24999.

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6

Obopile, Motshwari. "INTERACTIONS AMONG MAIZE PHENOLOGIES, TRANSGENIC BACILLUS THURINGIENSIS MAIZE AND SEED TREATMENT FOR MANAGEMENT OF PESTS AND DISEASES OF MAIZE." The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1243020914.

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7

Tremblay, Annie C. "The role of birds as predators and potential biocontrol agents of insect pests in corn fields." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/MQ50898.pdf.

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8

Presello, Daniel A. "Studies on breeding of maize for resistance to ear rots caused by Fusarium spp. and on the occurrence of viruses in maize in eastern Canada." Thesis, McGill University, 2001. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=38260.

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Responses from pedigree selection for resistance to gibberella ear rot were assessed in four maize (Zea mays L.) populations, two selected after inoculation of Fusarium graminearum (Schwabe) macroconidia into the silk channel and two selected after inoculation into developing kernels. Responses were significant in both populations selected for silk resistance and in one of the populations selected for kernel resistance. Selection was more effective in later generations and genetic gains were associated with among-family selection but not with within-family selection. Results obtained here indi

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9

Kadango, Tendayi Lovemore. "Farmers' perceptions of insect pests in the Eastern Cape maize-based cropping systems and the effects of crop residue management on insect pest populations." Thesis, University of Fort Hare, 2018. http://hdl.handle.net/10353/6202.

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Maize (Zea mays L.) is one of the most important crops in South Africa that is cultivated for food, feed and as a cash crop. Maize in the Eastern Cape is typically grown for consumption and the Province is one of the least producers owing to small landholdings, poor production conditions and pests. This study investigated: (i) the different maize cropping systems smallholder farmers practice in the Eastern Cape (EC), (ii) the major maize insect pests within the identified cropping systems, (iii) the perceptions of Eastern Cape smallholder maize farmers on the effects of insect pests, and (iv)

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10

Traut, Eduardo Jorge. "Bipolaris zeicola: physiological races, morphology and resistance on maize." Diss., Virginia Tech, 1993. http://hdl.handle.net/10919/40449.

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11

Gelderblom, Wentzel Christoffel Andreas. "Mycotoxicological properties of fusarium verticillioides and the fumonisins : mechanisms and implications for setting risk assessment parameters in humans." Thesis, Stellenbosch : Stellenbosch University, 2009. http://hdl.handle.net/10019.1/3971.

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Thesis (DSc (Biochemistry))--Stellenbosch University, 2009.<br>The fumonisin mycotoxins are known to be the causative principle for several animal diseases and are associated with the development of liver and oesophagus cancer and neural tube defects in humans. The thesis focuses mainly on the characterisation of the compounds from maize cultures of the fungus Fusarium verticillioides, isolated from maize, the toxicological effects in animals, mechanism involved in hepato- and nephrocarcinogenicity and discussing the major differences and contradictions in the literature together with th

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12

Highland, H. Brett. "Ecology of the stalk borer Papaipema nebris (Guenee), (Lepidoptera:noctuidae), in the southwestern Virginia no-till corn agroecosystem." Diss., Virginia Polytechnic Institute and State University, 1986. http://hdl.handle.net/10919/49794.

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13

Dupeux, Yann Alain. "The effect of cultivation and intercropping on the incidence of ear rot of corn and head blight of wheat." Thesis, McGill University, 1995. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=23269.

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Three cultivators, Rabewerk, Kongskilde and Hiniker, and three intercrops, soybean, lupin and red clover + rye grass were investigated for their impact on the incidence of ear rot of corn, a common disease of maize in eastern Canada. Wheat was seeded in the corn rows to serve as an additional indicator of cultivation and intercropping effects on the pathogen. An artificial inoculum of F. graminearum that produced perithecia and ascospores was used to mimic natural inoculum.<br>In 1993 and 1994, the infection in the corn was not very severe and there were no differences between the treatments a

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14

Brunet, Francine. "Intercropping and mechanical weeding : effects on insects of Zea mays." Thesis, McGill University, 1996. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=23990.

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A study was undertaken from 1993 to 1994 to determine the effects of intercropping (with Glycine max L Merr., Lupinus sp., Trifolium pratense L.-Lolium multiflorum Lam., or Secale cereale L.) and mechanical weeding (with a rigid tines cultivator, Danish tines cultivator or ridge cultivator) on the population dynamics of insect pests (Diabrotica longicornis Say, Lygus lineolaris Palisot de Beauvois, Ostrinia nubilalis Hubner, and Pseudaletia unipuncta Haworth) on corn (Zea mays L.) in L'Assomption and Sainte-Anne-de-Bellevue, Quebec, Canada.<br>D. longicornis or P. unipuncta populations did not

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15

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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16

Skenjana, Nolitha Leonora. "Identification and documentation of ethnobiological methods used by rural farmers to control stalk borers on maize in the Eastern Cape Province of South Africa." Thesis, University of Fort Hare, 2015. http://hdl.handle.net/10353/d1019852.

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Maize contributes substantially to food security in the Eastern Cape province of South Africa. It is a staple food to many of the province’s rural and urban inhabitants. Insect pests are one of the factors that hamper its productivity and as a result, deprive farmers of good yields. The adverse effects of insecticides and the high cost associated with them and the cost of transgenic seeds are some of the challenges faced by small-scale farmers in rural areas. Alternative control methods which include the use of indigenous techniques to control pests are now sought. A study to identify and docu

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17

Clark, M. Sean. "Generalist predators in reduced-tillage corn : predation on armyworm, habitat preferences, and a method to estimate absolute densities /." Thesis, This resource online, 1993. http://scholar.lib.vt.edu/theses/available/etd-11102009-020213/.

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18

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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19

Bujold, Isabelle. "The use of a fungal antagonist to reduce the initial inoculum of Gibberella zeae on wheat and corn debris /." Thesis, McGill University, 2000. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=31199.

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Gibberella zeae (anamorph: Fusarium graminearum) is the causal agent of fusarium head blight (FHB) and maize ear rot, two major diseases of wheat and corn in Eastern Canada.<br>In Quebec, Microsphaeropsis sp., an antagonist of Venturia inaequalis, the causal agent of apple scab, was isolated from the apple leaf litter. This fungus, well adapted to Quebec climate, can reduce the initial inoculum of V. inaequalis. FHB and Gibberella ear rot are similar to apple scab because the major inoculum source comes from melanized structures produced on crop residues. Consequently, we evaluated the potenti

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20

Odeyemi, Oluwakemi Oluwaseyi. "Studies on the use of essential oils for the control of Sitophilus Zeamais (Motschulsky) (Coleoptera; Curculionidae): a pest of stored maize grains." Thesis, University of Fort Hare, 2008. http://hdl.handle.net/10353/168.

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The common maize weevil, Sitophilus zeamais Motschulsky (Coleoptera: Curculionidae), a well known pest of stored-maize grain in most parts of the world, was identified as one of the major constraints of harvested maize grains in the Eastern Cape Province, South Africa. The use of plants or their products is one of the recent methods being investigated for insect pest control worldwide. Therefore, the main aim of the present study was to identify available plants in the Eastern Cape that could be used to combat the problem of Sitophilus zeamais in stored-maize grains. For the realization of the

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21

Oliveira, Dillaine Hennig de. "Ocorrência de fumonisinas em milho e derivados, destinados à alimentação humana." Universidade Tecnológica Federal do Paraná, 2016. http://repositorio.utfpr.edu.br/jspui/handle/1/1876.

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A cultura do milho é um dos segmentos mais importantes para a economia do agronegócio brasileiro, sendo responsável por 37% dos grãos produzidos no país. Entretanto, devido ao seu alto valor nutritivo, possui grande suscetibilidade ao crescimento fúngico, com destaque para Fusarium sp. que além de agente deteriorante é responsável por produzir fumonisinas, um grupo de micotoxinas de caráter termoestável e possivelmente carcinogênico, associada a surtos ocorridos em equinos, suínos e aves. Assim, este trabalho teve como objetivo avaliar a ocorrência de fumonisinas em milho e seus derivados dura

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22

Silva, Adriana Moreira da Silva e. "Estudo dos mecanismos de defesa de plantas de milho atraves das abordagens de analise proteomica e mapeamento de QTLs." [s.n.], 2005. http://repositorio.unicamp.br/jspui/handle/REPOSIP/314675.

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Orientador: Sergio Marangoni<br>Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Biologia<br>Made available in DSpace on 2018-08-04T06:47:38Z (GMT). No. of bitstreams: 1 Silva_AdrianaMoreiradaSilvae_D.pdf: 6318592 bytes, checksum: 2d42ae741dfb799cf38492581dbb5324 (MD5) Previous issue date: 2005<br>Resumo: As plantas são capazes de responder e resistir ao ataque de patógenos ativando uma diversidade de estratégias de defesa. A maioria delas exibe uma estratégia geral onde são ativadas respostas bioquímicas de maneira coordenada, incluindo a reprogramação do metabolismo celul

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23

Borin, Regis Callegaro. "Fungicidas associados à fosfitos e complexos nutricionais interferem na qualidade de sementes de milho." Universidade Tecnológica Federal do Paraná, 2017. http://repositorio.utfpr.edu.br/jspui/handle/1/2429.

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O milho (Zea mays L.) é um dos cereais mais cultivados no mundo e apresenta papel importante na economia mundial. Com a expansão do plantio da cultura, reduziu-se o convívio harmônico entre a cutlura e as doenças, aumentando com isso, os danos causados, principalmente por fungos fitopatogênicos. Sabendo-se destas necessidades, foram realizados dois estudos que envolveram o uso de fosfitos isolados e, associados com fungicidas comerciais recomendados para o tratamento de sementes. Objetivou-se avaliar o potencial dos fosfitos sobre Fusarium verticilliodes e Fusarium graminearum em condições in

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24

Melia-Hancock, Susan. "Effect of European and southwestern corn borers on translocation of photosynthetic products, water use and yield in Zea mays L." 1985. http://hdl.handle.net/2097/27500.

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25

Chilaka, Cynthia Adaku. "A survey of South African commercial feed grade maize for mycotoxins with particular reference to fumonisins using different analytical techniques." Thesis, 2012. http://hdl.handle.net/10210/8057.

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M.Tech.<br>Maize (Zea may) is the third most important cereal in the world serving various purpose of economic importance especially as staple diet to the Africans and as a major component of animal feed. Unfortunately, this commodity serves as a suitable substrate for pest and fungi development which may result in the production of mycotoxins. Mycotoxins are secondary metabolites of varying chemical structures produced by filamentous fungi, which may contaminate agricultural commodities either in the field or at storage. Mycotoxins have been implicated to cause several diseases in humans and

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26

Kanyomeka, Luke. "Tolerance of maize genotypes to selected herbicides." Thesis, 2002. http://hdl.handle.net/2263/28633.

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Maize damage has been observed from time to time in many parts of South Africa where registered herbicides were applied. Differential cultivar tolerance to certain herbicides was identified as an important factor in many cases where herbicide selectivity was inadequate. A study was done to investigate the existence of differential tolerance of maize genotypes to selected herbicides. Several maize genotypes were screened for tolerance to selected herbicides, both in the greenhouse and in the field. Maize genotypes demonstrated significant differences in their tolerance to all herbicides. Some g

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27

Helmich, Bryan T. "Controlling damage by ring-necked pheasants to sprouting corn in southwestern Idaho." Thesis, 1990. http://hdl.handle.net/1957/37928.

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During the springs of 1988 1989, experiments were conducted to determine effective methods of controlling damage by ring-necked pheasants (Phasianus coichicus) to sprouting corn in southwestern Idaho. Plot evaluations (1988) failed to demonstrate the ability of Miller Hot Sauce Animal Repellent, Isotox Seed Treater (F), provision of alternate food, and bird scaring reflective tape to reduce damage. When evaluated using entire production fields for replicates (1989) firecrackers on fuse rope, bird scaring reflective tape, hawk-kites, and provision of alternate food all significantly reduced the

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28

(9133244), Wyatt Steven Petersen. "Weed Control in Cover Crop No-Till Corn Systems." Thesis, 2020.

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<p><a>In the United States and Canada, weed interference in corn (<i>Zea mays </i>L.) costs farmers nearly $4 billion per year. Weed control has been achieved primarily through herbicides and tillage. As no-till corn acres have increased, dependence on herbicides has also increased. Herbicide-resistant weed infestations have pressured many growers into other weed management practices, such as adding winter cover crops into crop rotations. Field experiments were conducted in 2017 through 2018 and 2018 through 2019 at three locations in Indiana to determine residual herbicide efficacy applied at

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29

De, Waele Elsie. "A study of the interaction between Pratylenchus spp. (Nematoda) and Zea mays L." Thesis, 2014. http://hdl.handle.net/10210/12897.

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30

Drapek, Raymond James. "Use of a geographical information system to modify pheromone trap-based predictions of Helicoverpa zea (Boddie) damage." Thesis, 1993. http://hdl.handle.net/1957/35398.

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The GRASS (V. 4.0) geographical information system (GIS) was used to test the hypothesis that pheromone trap based predictions of Helicoverpa zea (Boddie) damage in processed sweet corn could be improved by considering spatial patterns of corn plantings and wind blocking features around the trap. Wind blocking features include: tree rows, wooded areas, large buildings close to the trap, and abrupt hillsides. Pheromone traps were monitored at 29 and 30 sites in 1990 and 1991. Corn development through the year and damage levels at harvest (percent infestation) were also recorded for these locati

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31

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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32

Gichuru, Lilian Njeri. "Breeding investigations on utility of maize streak virus resistant germplasm for hybrid development in the tropics." Thesis, 2014. http://hdl.handle.net/10413/10694.

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Maize (Zea mays L.) supports millions of livelihoods in sub-Saharan Africa (SSA) in terms of food and feed. Production of the crop is however limited by several factors, among these, maize streak virus (MSV) disease. Although extensively studied, MSV remains a serious problem in SSA due to several challenges in breeding MSV resistant maize varieties. These include integration of MSV resistant germplasm from different backgrounds, reliance on a few resistant sources, and genotype x environment interactions. This study was designed to assess the breeding potential of several MSV resistant

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33

Mafu, Nothando Fowiza. "Marker-assisted selection for maize streak virus resistance and concomitant conventional selection for Downy Mildew resistance in a maize population." Thesis, 2013. http://hdl.handle.net/10413/10023.

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Maize streak virus (MSV) disease, transmitted by leafhoppers (Cicadulina mbila, Naude), and maize downy mildew (DM) disease caused by Peronosclerospora sorghi (Weston and Uppal) Shaw, are major contributing factors to low maize yields in Africa. These two diseases threaten maize production in Mozambique, thus the importance of breeding Mozambican maize varieties that carry resistance to these diseases. Marker-assisted selection (MAS) was employed to pyramid MSV and DM disease resistant genes into a single genetic background through simultaneous selection. Firstly, it was essential to determine

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34

Mengesha, Wende Abera. "Genetic diversity, stability, and combining ability of maize genotypes for grain yield and resistance to NCLB in the mid-altitude sub-humid agro ecologies of Ethiopia." Thesis, 2013. http://hdl.handle.net/10413/10935.

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Maize (Zea mays L.) is the third most important cereal crops in the world after wheat and rice. In Ethiopia, maize remains the second largest food security crop after tef [Eragrostis tef (Zucc.) Trotter.]. The mid-altitude, sub-humid agro-ecology (1000 to 1800 m above sea level) is the most important maize producing environment in Ethiopia. However, productivity of maize is low, due to several biotic and abiotic constraints. Among the biotic constraints, Turcicum leaf blight disease of maize caused by Exserohilum turcicum Pass Leonard & Suggs shows high incidence of 95-100% and inflicts signif

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(5929796), Joseph T. Ikley. "The Role of Alternative Hosts and Herbicides in the Management of Clavibacter nebraskensis, Causal Agent of Goss’s wilt of Corn." Thesis, 2019.

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The reemergence of Goss’s wilt of corn in the western Corn Belt in 2006, along with subsequent identification of the disease in 16 states, has led to renewed interest in the disease and its epidemiology. Goss’s wilt, caused by the bacterium Clavibacter nebraskensis, is currently the third-leading cause of yield loss in corn from diseases in the United States. Its impact is exacerbated by the fact that cultural control methods are the only current means for its control. The objectives of our research were to (1) determine the role that alternative hosts of the bacterium play in the disease cycl

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36

Hoinacki, Elisabeth V. "Sweet corn decline syndrome in Oregon's Willamette Valley." Thesis, 2003. http://hdl.handle.net/1957/29744.

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Mwimali, Murenga Geoffrey. "Genetic analysis and response to selection for resistance to two stem borers, Busseola fusca and Chilo partellus, in tropical maize germplasm." Thesis, 2014. http://hdl.handle.net/10413/10943.

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Maize is the principal staple food in sub-Saharan Africa (SSA), but production lags behind population growth. The African stem borer, Busseola fusca, Fuller (Lepidoptera, Noctuidae), and the spotted stem borer, Chilo partellus, Swinhoe (Lepidoptera, Crambidae) are serious insect pests of maize in tropical environments. The damage can be managed by breeding stem borer resistant maize varieties but there is limited information that can be used to devise appropriate breeding programs. Therefore breeding investigations were conducted to appraise germplasm screening methods, and to determine combin

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Kasozi, Lwanga Charles. "Genetic analysis and selection for maize weevil resistance in maize." Thesis, 2013. http://hdl.handle.net/10413/10746.

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The maize weevil (Sitophilus zeamais Motschulsky) is one of the most destructive storage insect pest of maize (Zea mays L.) in tropical Africa and worldwide, especially when susceptible varieties are grown. Therefore, grain resistance against the maize weevil should be part of a major component of an integrated maize weevil management strategy. The specific objectives of this study were to: i) determine farmers’ perceptions about weevil resistance in maize cultivars; ii) determine the genotypic variation for maize weevil resistance in eastern and southern Africa maize germplasm lines; iii) stu

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39

Gerber, Johan 1961. "Yield response of Fusarium infected maize seed treated with biological control agent formulations." Diss., 2010. http://hdl.handle.net/10500/4713.

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Potential vegetative and reproductive increases in yield, as well as the biological efficacy against Fusarium verticillioides and F. proliferatum causing ear and stem rot in maize crops of commercially-formulated micro-organism formulation T-Gro (Trichoderma harzianum isolate DB103 WP) combined with Spartacus (Beauveria bassiana isolate DB 105 WP), T-Gro combined with Armenius (Bacillus subtilis isolate DB 109 WP), T-Gro combined with Maximus (Bacillus subtilis isolate DB 108 WP), T-Gro combined with Shelter (Bacillus subtilis isolate DB 101), T-Gro combined with Bismarck (Microbacterium marit

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40

Panzo, Josue Domingos. "The incidence of fungi and their mycotoxins in Angolan food and crops with particular reference to maize." Thesis, 2012. http://hdl.handle.net/10210/5344.

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M.Tech.<br>Fungi and their mycotoxins are major contaminants of cereals and maize which is the major staple food for Angolan population. The consumption of fungal and mycotoxins contaminated maize can induce health problems as these mycotoxins are known to induce immune suppression and other chronic diseases known as mycotoxicoses. In addition, to these mycotoxins also induce chronic diseases such as cancers of various types (liver, oesophageal, brain). Mycotoxins also immensely affect organs such as fragility and haemorrhage in tissues, liver-necrosis, bile-duct proliferation, caustic effects

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Mariote, David. "Response to selection for downy mildew (Peronosclerospora sorghi) and maize streak virus resistance in three quality protein maize populations in Mozambique." Thesis, 2007. http://hdl.handle.net/10413/748.

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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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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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44

Moodley, Odeshnee. "Effectiveness of varied refugia configurations for genetically modified maize (Zea mays L.) in KwaZulu-Natal midlands." Diss., 2013. http://hdl.handle.net/10500/18319.

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Genetically modified (GM) white and yellow maize, Zea mays, has been commercially released and cultivated in South Africa since 1997/1998. The traits expressed are insect resistance and herbicide tolerance conferred by the bacteria Bacillus thuringiensis (Bt) Cry genes and Agrobacterium 5-enolpyruvylshikimate-3-phosphate (EPSP) synthase gene, respectively. The Cry genes have been used widely to control lepidopteran insect pests but insect resistance to GM Bt crops has been a concern since the introduction of this technology. A management strategy includes refugia planting of 5% non-Bt plants,

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Moodley, Odeshnee. "Effectiveness of varied refugia configurations for the genetically modified maize (Zea mays L.) in Kwa-Zulu-Natal midlands." Diss., 2013. http://hdl.handle.net/10500/18319.

Full text

Abstract:

Genetically modified (GM) white and yellow maize, Zea mays, has been commercially released and cultivated in South Africa since 1997/1998. The traits expressed are insect resistance and herbicide tolerance conferred by the bacteria Bacillus thuringiensis (Bt) Cry genes and Agrobacterium 5-enolpyruvylshikimate-3-phosphate (EPSP) synthase gene, respectively. The Cry genes have been used widely to control lepidopteran insect pests but insect resistance to GM Bt crops has been a concern since the introduction of this technology. A management strategy includes refugia planting of 5% non-Bt plants,

APA, Harvard, Vancouver, ISO, and other styles

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