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Dissertations / Theses on the topic 'Armenian population of maize'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Settles, A. M., David Holding, Bao Tan, et al. "Sequence-indexed mutations in maize using the UniformMu transposon-tagging population." BioMed Central, 2007. http://hdl.handle.net/10150/610402.

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BACKGROUND:Gene knockouts are a critical resource for functional genomics. In Arabidopsis, comprehensive knockout collections were generated by amplifying and sequencing genomic DNA flanking insertion mutants. These Flanking Sequence Tags (FSTs) map each mutant to a specific locus within the genome. In maize, FSTs have been generated using DNA transposons. Transposable elements can generate unstable insertions that are difficult to analyze for simple knockout phenotypes. Transposons can also generate somatic insertions that fail to segregate in subsequent generations.RESULTS:Transposon inserti

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2

Schley, Laurent. "The badger Meles meles and the wild boar Sus scrofa : distribution and damage to agricultural crops in Luxembourg." Thesis, University of Sussex, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.326935.

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3

Erazo-Barradas, Mauricio. "Evaluation of popping expansion traits in a maize (Zea mays L.) population." [Ames, Iowa : Iowa State University], 2009. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1474700.

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4

Azevedo, Demostenes Marocos Pedrosa de. "The influence of plant population on weed supression in maize/bean intercropping." Thesis, University of East Anglia, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.237002.

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5

Pink, Ryan. "Molecular basis for maize as a risk factor for oesophageal cancer in a South African population." Thesis, Cranfield University, 2007. http://dspace.lib.cranfield.ac.uk/handle/1826/8006.

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Throughout the world squamous cell carcinoma of the oesophagus seems to be an increasing problem. There is a huge variation in prevalence globally; locations such as Japan, Iran, China and Finland can have ten times the prevalence compared to other western countries. One place that is hugely affected is Transkei, a 16,000 square mile area of South Africa. Some of the factors proposed to be implicated with squamous cell carcinoma in this region include tobacco smoking, alcohol consumption, bacterial infections and fungal infection of common food crops. In addition, the ‘Sammon theory’ links car

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6

Polius, J. J. N. "Micronutrient nutrition of maize (Zea mays L.) as influenced by fertilizers, hybrids, irrigation and plant population density." Thesis, McGill University, 1987. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=63809.

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7

Nsibo, David Livingstone. "Population genetics of the maize foliar pathogen cercospora zeina crous & U. braun in five countries of Sub-Saharan Africa." Thesis, University of Pretoria, 2019. http://hdl.handle.net/2263/77869.

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Cercospora zeina, a causal pathogen of gray leaf spot (GLS) of maize, is responsible for up to 1 % of global yield losses. Previous small-scale population genetics studies have revealed that C. zeina is a highly diverse pathogen. Using microsatellite markers, we set out to determine the genetic diversity and population structure of 835 C. zeina isolates from five countries in Sub-Saharan Africa: Kenya, South Africa, Uganda, Zambia, and Zimbabwe, and to establish their evolutionary potential. Our findings revealed that populations from different farming systems exhibited partial, but significan

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8

McClane, John Michael. "A diallel study of flowering and of ear components of yield in Corn Belt maize and their interactions with population density." Diss., Virginia Polytechnic Institute and State University, 1985. http://hdl.handle.net/10919/53890.

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A diallel study of American Corn Belt maize (Zea mays L.) was conducted at Holland, Virginia in 1981 and 1982. All possible crosses of twelve inbred parents (A619, A632, B73, H60, H93, H96, Mo17, Oh7B, Pa91, Val7, Va.79:419, Va85) were planted in three replications with population density treatments of 39,536, 49,420, 59,304, and 69,188 pl/ha in strips across hybrid treatments. Analyses of variance and combining ability analyses were performed on traits measuring the timing of anthesis (pollen shed) and silk emergence, on ear components of yield, and on components of kernel size. Density effec

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9

Hussein, Begna Sultan. "Response of leafy reduced-stature maize, Zea mays L., hybrids to plant population densities and planting patterns in a short-season area." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape16/PQDD_0006/MQ29652.pdf.

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10

Begna, Sultan Hussein. "Response of leafy reduced-stature maize (Zea mays L.) hybrids to plant population densities and planting patterns in a short-season area." Thesis, McGill University, 1996. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=27278.

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The yield of short-season hybrids is lower than long-season hybrids, mainly as a result of the low final leaf area developed by the short-season plants. This is due to the smaller plant stature and smaller leaf number and size of short-season adapted hybrids. In addition, in short-season areas the thermal-time available may be insufficient to mature grain of current maize hybrids. Maize hybrids which accumulate leaf area quickly, mature earlier, yield well and tolerate higher population densities better than the currently available hybrids would be more suitable for production in short-season

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11

Baniszewski, Julie. "IRRIGATED ZEA MAYS RESPONSE TO NITROGEN AND HIGH PLANT POPULATION DENSITY IN NARROW ROWS." UKnowledge, 2016. http://uknowledge.uky.edu/pss_etds/73.

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Modern genetics have improved maize hybrids to better tolerate stress, use nutrients more efficiently and potentially yield higher. Management practices, such as narrow row technology and high plant population density (PPD) may further improve yields in modern maize under irrigated, non-limiting conditions. High PPD (74, 99, 124, 148 K seeds ha-1) were tested in narrow rows with up to four nitrogen (N) rates in three locations over two years in Kentucky with a modern maize hybrid in irrigated, non-limiting conditions. Results indicate that optimal seeding rates were 99,000 to 124,000 seeds ha-

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12

Lindsey, Alexander Joseph. "Agronomic and Physiological Responses of Modern Drought-Tolerant Maize (Zea mays L.) Hybrids to Agronomic Production Practices." The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1428654442.

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13

Martinelli, Samuel. "Suscetibilidade a deltametrina e variabilidade molecular em populações de Spodoptera frugiperda (Lepidoptera: Noctuidae) coletadas nas culturas do algodoão e milho no Brasil." Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/11/11146/tde-20062006-125453/.

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Com a crescente expansão de cultivos agrícolas no Brasil, tem sido bastante comum o sistema de produção de algodão e milho em uma mesma região. Como uma possível conseqüência deste sistema de cultivo, os problemas com Spodoptera frugiperda (J. E. Smith) têm aumentado nestas duas culturas nos últimos anos. Assim, para o estabelecimento de um manejo mais efetivo desta praga, foi levantada a hipótese de que as mesmas populações de S. frugiperda atacam as culturas do algodão e milho em uma determinada região. Para testar esta hipótese, foram realizados os seguintes estudos: 1) a avaliação a suscet

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14

Anselmi, Adriano Adelcino. "População variada de híbridos de milho: uma estratégia de gestão das variabilidades espacial e temporal das lavouras." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/11/11136/tde-01082016-175918/.

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A população de plantas é um dos fatores que impacta fortemente na produtividade da cultura do milho (Zea mays); justá-la localmente é uma das estratégias para gerenciar a variabilidade das lavouras e otimizar o uso de recursos do ambiente que não estão sob o controle do produtor rural, como o tipo de solo e a capacidade de retenção de água. O objetivo desse estudo foi investigar a produtividade de híbridos de milho submetidos à semeadura em taxas variáveis (STV) em unidades de gestão diferenciada (UGD). Foi utilizado o total de dez híbridos de milho testados em cinco níveis de populações de pl

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15

Leite, Natália Alves. "Genetic diversity and susceptibility to Vip3Aa20 protein in Brazilian populations of Helicoverpa armigera and Helicoverpa zea (Lepidoptera: Noctuidae)." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/11/11146/tde-16062016-164838/.

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Helicoverpa armigera (Hübner) was officially reported in Brazil in 2013. This species is closely related to Helicoverpa zea (Boddie) and has caused significant crop damage in Brazil. The use of genetically modified crops expressing insecticidal protein from Bacillus thuringiensis (Berliner) has been one of the control tactics for managing these pests. Genetically modified maize expressing Vip3Aa20 was approved to commercial use in Brazil in 2009. Understanding the genetic diversity and the susceptibility to B. thuringiensis proteins in H. armigera and H. zea populations in Brazil are crucial f

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16

Bedoya, Salazar Claudia A. "Estudios de diversidad genética en poblaciones de maíz (Zea mays L.) evaluadas con microsatélites." Doctoral thesis, Universitat de les Illes Balears, 2013. http://hdl.handle.net/10803/116859.

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En este trabajo de Tesis se evalúo de manera extensiva la diversidad genética presente en los maíces nativos de Latinoamérica, combinando datos fenotípicos y genotípicos, con dos propósitos diferentes. El primero, un estudio donde la diversidad genética, las relaciones interpoblacionales y la estructura poblacional de los materiales nativos permitieron ligar aspectos históricos, antropológicos y arqueológicos del maíz para crear una historia consolidada de la migración del maíz desde su centro de origen en Mesoamérica hacia el Caribe y Sudamérica. El segundo, es explorado el potencial de las r

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17

Zhao, Qiong. "Molecular population genetics of maize regulatory genes during maize evolution /." 2006. http://www.library.wisc.edu/databases/connect/dissertations.html.

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18

YANG, WEN-HUANG, and 楊文煌. "Yield potential and improvement of Tainan-white maize population." Thesis, 1991. http://ndltd.ncl.edu.tw/handle/05513696316903890794.

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19

Liang, Jenn-Chang, and 梁振昌. "Variation of Different Population of Tainan-White Maize in Taiwan." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/18927706357787194087.

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碩士<br>國立中興大學<br>農藝學系<br>89<br>Abstract From the Tainan-White Population gathered from the diverse areas in Taiwan (Hualien, Taoyuan, Taichung, Yunlin, Pingtung, Taitung), planted in Taichung to exclude the environment factor, this study discovered significant difference of the averages of agronomic characters among the populations. With the vegetative characters, Taitung (south) population is greater than the northern ones located in Taoyuan and Hualien. In terms of the grain dry weight of autumn crops grains, Pingtung population is the heaviest, followed by Taichung population; t

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20

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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21

Huang, Yu Chang, and 黃裕昌. "Studies on the quality characteristics in kernel of Tainan-white maize population." Thesis, 1995. http://ndltd.ncl.edu.tw/handle/29300131015918313952.

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22

Wardyn, Brandon M. "The quantitative genetics of a non-stiff-stalk maize (Zea mays L.) population /." 2006.

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23

Graterol, M. Eduardo J. "Response to full-sib reciprocal recurrent selection in a double-cross maize population." 2005. http://catalog.hathitrust.org/api/volumes/oclc/62260726.html.

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24

Sithole, Mxolisi Percival Sibongeleni. "Genetic variation and associations among adaptive traits in a recombinant maize inbred line population." Thesis, 2012. http://hdl.handle.net/10413/9890.

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Maize production in Africa is constrained by abiotic and biotic stresses. Breeders need to have information on the nature of combining ability of parents, their traits and performance in hybrid combination. This requires careful determination of genetic variability of parents, and studying associations between grain yield and adaptive traits to breed superior cultivars which are better able to withstand such stresses. Therefore, this study was aimed at selecting parental testers with best combining ability in hybrid combination with recombinant inbred lines (RILs); and studying the correlation

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25

Turnbull, Clinton J. "A quantitative trait response evaluation to selection in the BS13(S) maize (Zea mays L.) population /." 2006.

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26

Maita, Rene Adolfo Torrez. "Twenty cycles of bi-parental mass selection for prolificacy in the open pollinated maize population ʻGolden Glow ̓/". 1995. http://catalog.hathitrust.org/api/volumes/oclc/33152527.html.

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27

Ortiz, Carlos S. "Molecular Characterization of MADS-BOX Transcription Factors and Analysis of Field Population Diversity in the Maize Pathogen Fusarium verticillioides." Thesis, 2013. http://hdl.handle.net/1969.1/149443.

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Fusarium verticillioides (Teleomorph Giberella moniliformis) is an ascomycete fungus responsible for ear and stalk rots of maize. Most importantly, it produces a group of mycotoxins called fumonisins upon colonization of maize kernels. Fumonisin B1 (FB1), the most prevalent fumonisin in nature, was first identified in 1988 and has been found to be toxic to human and animals. The gene cluster for FB1 biosynthesis and some environmental conditions responsible for the toxin production are known, but gaps in our understanding of the signaling pathways leading to FB1 biosynthesis still remain. MADS

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28

De, Leon Gatti Natalia. "Genetic control of the number of ears per plant and related morphological traits in the open pollinated maize population 'golden glow'." 2002. http://www.library.wisc.edu/databases/connect/dissertations.html.

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29

De, Leon Gatti Natalia. "Morphological changes accompanying twenty-four cycles of bi-parental mass selection for prolificacy in the open pollinated maize population 'Golden Glow'." 2000. http://catalog.hathitrust.org/api/volumes/oclc/46590433.html.

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Thesis (M.S.)--University of Wisconsin--Madison, 2000.<br>Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 74-75).

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30

Pletsch-Rivera, Laura A. "Analysis of Xenia effect for phosphorus and field characterization of maize (Zea mays L.) population under adequate and low P conditions." 2004. http://catalog.hathitrust.org/api/volumes/oclc/56829155.html.

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31

Jines, Michael Phillip. "Identification of quantitative trait loci for gray leaf spot resistance, maturity, and grain yield in a semi-tropical recombinant inbred population of maize." 2004. http://www.lib.ncsu.edu/theses/available/etd-02282005-123356/unrestricted/etd.pdf.

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32

Shaku, Manchidi Melda. "Selection of IBM population inbred lines with improved root architectural traits and stem diameter that can enable them to tolerate nitrogen and phosphorus stresses." Thesis, 2018. http://hdl.handle.net/10386/2460.

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Thesis (M.Sc. Agric. (Agronomy)) --University of Limpopo, 2018<br>Two experiments were conducted at Ukulima Root Biology Centre, Waterberg district in Limpopo Province (24°32'58.1"S, 28°06'21.1"E) during 2013-2014 cropping season to select IBM population inbred lines with improved root whorl and stem diameter that can enable them to tolerate nitrogen and phosphorus stress. The experiments were laid out in a Split plot format based on a randomized complete block design with four replicates. The main plot factors were: nitrogen levels (low and high) and phosphorus (low and high), in the respecti

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