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Thèses sur le sujet « Wheat Growth »

Auteur : Grafiati

Publié le 4 juin 2021

Mis à jour le 25 juillet 2025

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1

Zubaidi, Akhmad. "Growth and yield of durum and bread wheat." Title page, contents and summary only, 1996. http://web4.library.adelaide.edu.au/theses/09A/09az93.pdf.

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Bibliography: leaves 148-160. A series of experiments was conducted to examine the growth and nutrient uptake of durum and bread wheat at a number of sites in South Australia. The experiments examined response to water stress, the pattern of root and shoot growth, soil water extraction and nutrient uptake among a range of adapted bread wheat and durum wheat cultivars.

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2

Ottman, Michael. "Predicting Wheat Growth Using the CSM-Cropsim-CERES - Wheat Crop Model." College of Agriculture, University of Arizona (Tucson, AZ), 2008. http://hdl.handle.net/10150/203650.

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CSM-Cropsim-CERES -Wheat is a crop growth model that predicts crop development stages, among other things, using genetic coefficients for vernalization and photoperiod. We used this model to predict flowering date for 12 durum varieties seeded in trials at Maricopa and Yuma from 1998 to 2006. The difference between simulated and measured flowering date averaged 4 days without genetic coefficients and improved to 3.5 days if genetic coefficients for flowering and vernalization were included for each variety.

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3

Barczys, Cathleen. "THE EFFECT OF AUDIBLE SOUND FREQUENCY ON THE GROWTH RATE OF YOUNG WHEAT PLANTS." Thesis, The University of Arizona, 1985. http://hdl.handle.net/10150/275379.

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4

Hopkins, Laura. "The effects of elevated ultraviolet-B radiation on the growth and developmentof the primary leaf of wheat (Triticum aestivum L. cv Maris Huntsman)." Thesis, University of St Andrews, 1997. http://hdl.handle.net/10023/13563.

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Seedlings of Triticum aestivum L. cv. Maris Huntsman were grown for 7 days in a controlled environment chamber (16 hour photoperiod: PAR - photosynthetically active radiation), in the presence and absence of ultraviolet-B (UV-B: 280-320nm) radiation (+30% increase on ambient). UV-B resulted in a 17% reduction in leaf length due to changes in both the rate and duration of cell division and elongation. Measurements of the spatial distribution of cell division and elongation within the primary leaf were used to determine the temporal distribution of cells (i.e. cell age). The cell age gradient al

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5

Bond, Mark Anthony. "The effects of enhanced UV-B and CO2 on the growth and development of Triticum aestivum." Thesis, University of St Andrews, 1997. http://hdl.handle.net/10023/13561.

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Seedlings of Triticum aestivum L. (cv Maris Huntsman) were propagated in a controlled environment chamber to 240hr (post-imbibition) under ambient, enhanced UV-B (200Wm-2), CO2 (550ppm and 700ppm) and combined UV-B/CO2 treatments. The grass leaf developmental model was used to determine changes in the cell-age gradient along the leaf length, under these treatments. By full leaf expansion, enriched CO2 had significantly increased leaf height, whilst this was decreased under enhanced UV-B, and decreased further under the combined UV-B/CO2 treatment. Analysis of the zones of cell division and cel

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6

Zahedi, Morteza. "Physiological aspects of the responses of grain filling to high temperature in wheat." Title page, abstract and contents only, 2001. http://web4.library.adelaide.edu.au/theses/09PH/09phz19.pdf.

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"June 2001." Includes bibliographical references (leaves 217-248). The effects of a sustained period of moderately high temperature on physiological and biochemical aspects of grain development were investigated in wheat cultivars grown under controlled environment conditions. The effect of variation in plant nutrition on the responses of cultivars to high temperature was also studied.

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7

Caley, Clare Yvonne. "Termination of grain growth in cereals." Thesis, University of Edinburgh, 1987. http://hdl.handle.net/1842/27746.

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8

Miranda, L. N. de. "Aluminium-phosphate interactions in relation to wheat growth." Thesis, University of Reading, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.355697.

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9

Arif, Hamayun. "Water relations of salt stressed wheat." Thesis, Bangor University, 1990. https://research.bangor.ac.uk/portal/en/theses/water-relations-of-salt-stressed-wheat(b523794e-42f4-4165-bb35-11f07b7bbf28).html.

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The present study was conducted to investigate the water relations of individual plant cells and the biophysical parameters controlling plant growth in the context of salt stress. Growth and water relations were studied in growing as well as in mature zones of the first emerged leaf of wheat seedlings (cv. Flanders, a British variety) in the context of NaCl stress. Various levels of NaCl (0,25,50,75,100,125 and 150 mol m) -3 were used to salinize the media. I In the case of leaf elongation rate a two phase response was found i. e. an immediate decrease and then, a recovery in the elongation ra

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10

Deveson, M. R. "Effects of plant growth regulators on root growth and root/shoot integration in wheat (Triticum aestivum L.)." Thesis, University of Reading, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.376235.

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11

Webb, Amanda Jane. "Mn, Cu and Zn requirements for wheat root growth." Thesis, Webb, Amanda Jane (1992) Mn, Cu and Zn requirements for wheat root growth. PhD thesis, Murdoch University, 1992. https://researchrepository.murdoch.edu.au/id/eprint/52547/.

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The effects of Mn, Cu and Zn deficiencies on the growth of the root system of wheat (Triticum aestivum cv. Gamenya) seedlings in solution culture were examined in three series of glasshouse experiments. Firstly, simple deletion experiments were undertaken in order to identify early root deficiency symptoms. Secondly, split root experiments were used to determine whether all of the root system requires an external supply of Mn, Cu and Zn; and thirdly, radioisotopes were used to investigate the extent of redistribution of Mn and Zn to roots without an external supply of Mn and Zn. Since roots

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12

Iqbal, Rana Muhammad. "Growth and physiology of spring wheat under saline conditions." Thesis, Bangor University, 1992. https://research.bangor.ac.uk/portal/en/theses/growth-and-physiology-of-spring-wheat-under-saline-conditions(fadba57d-0627-4506-807a-e6c80792f57c).html.

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A series of experiments were carried out in solution culture in growt~ ~ooms and a glasshouse, to study the effects of sallnlty on leaf extension rate ion concentrations, sap osmotic pressure, net photosynthesis and related parameters, stom~tal frequency, specific leaf weight and a number of agronomlc parameters of spring wheat. Rate of net photosynthesis, transpiration rate, stomatal conductance and sub-stomatal carbon dioxide concentration per unit area of leaf were determined using an Infra-red Gas Analyser. Experiments 1 and 3 were conducted in growth rooms set at a temperature cycle of 24

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13

Day, A. D., and M. J. Ottman. "Growth Cycle, Fertilizer, Planting Rate, and Genotype Influence Barley Hay or Forage Growth in the Southwest." College of Agriculture, University of Arizona (Tucson, AZ), 1985. http://hdl.handle.net/10150/200506.

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14

Artus, Sally. "VEGIGRO: a crop growth teaching model." Thesis, University of Nottingham, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.484201.

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15

Tunio, Shamsuddin. "Effect on environment and plant growth regulators on the growth of different wheat genotypes." Thesis, Bangor University, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.293125.

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16

Alghamdi, Mohammed A. M. "Plant growth regulators effects on vegative growth, yield and yield components in winter wheat." Thesis, University of Reading, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.553077.

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Three glasshouse experiments and one field experiment were carried out to investigate the effect of the plant growth regulator on vegetative growth and yield components of reduced height isogenic lines of the wheat (Triticum aestivum L.) cultivar Mercia. The first experiment compared the growth regulator response of seven isogenic lines of Mercia. Subsequent experiments used four lines, (Mercia control, Rhtl Rht2, and Rht8). Two glasshouse experiments examined the responses under well watered and water stress conditions. The third glasshouse experiment examined rates and time of application un

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17

Tickes, B., and M. J. Ottman. "Evaluation of Plant Growth Regulators on Wheat in Arizona, 1987." College of Agriculture, University of Arizona (Tucson, AZ), 1988. http://hdl.handle.net/10150/200841.

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Plant growth regulators are applied to small grains to decrease lodging which can adversely affect crop growth and yield. Wheat is intensively managed in Arizona, and lodging can be a problem. Chlormequat and ethephon were applied at various rates and times in six studies in 1987 to evaluate their use on Arizona's semi -dwarf cultivars with respect to lodging plant height, yield components and grain yield The results indicated that growth regulators applied at the recommended rates and times may decrease plant height and decrease kernel weight. However, the influence of growth regulator treatm

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18

Smallfield, B. M. "Influence of straw residues on the growth of winter wheat." Thesis, University of Reading, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.292951.

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19

Ali, Mansab. "Light interception and growth of intercropped soybean into winter wheat /." The Ohio State University, 1990. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487676261012395.

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20

Ottman, M. J., S. H. Husman, R. J. Wegener, M. D. Sheedy, K. White, and M. T. Rogers. "Critical Growth Stages for Water Stress in Durum, 2001." College of Agriculture, University of Arizona (Tucson, AZ), 2001. http://hdl.handle.net/10150/205410.

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The purpose of this research was to determine which durum growth stage is most responsive to additional irrigations (based on 35% depletion) when grown at a slightly suboptimal irrigation level of 65% plant available soil water depletion at other growth stages. A field experiment was conducted at the Maricopa Agricultural Center testing the effects of additional irrigations applied during tillering, jointing, or grain fill. Additional irrigations during tillering, jointing, grain fill, or no additional irrigations resulted in grain yields of 5964, 5419, 6301, and 4200 lbs/acre for Kronos and 5

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21

Ahmad, Manzoor. "Growth and gas exchange of wheat under saline and sodic conditions." Thesis, Bangor University, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.245308.

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22

Leverton, Ray. "Effects of competition and water availability on tillering and growth in wheat." Thesis, University of Nottingham, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.235732.

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23

Ali, A. "The effects of environmental stresses on performance of spring wheat genotypes." Thesis, Bangor University, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.382246.

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24

Kgope, Barney Stephen. "Effects of sustained elevated CO2 concentration and Nitrogen nutrition on wheat (Triticum aestivum L. cv Gamtoos)." Thesis, Rhodes University, 2000. http://hdl.handle.net/10962/d1003774.

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There is consensus that high CO2 results in enhanced growth and yield for most crop plants. However, most of these studies were carried out in the presence of adequate nutrients, which is also the case in agricultural systems (managed ecosystems). About 20% of the earth’s land mass have sufficiently low levels of nutrients to cause some kind of stress to plants. On the other hand, elevated [CO2] decreases foliar nutrient elements in plants and as a result partitioning of certain nutrient elements in plants is altered. Little data is available on the partitioning of most nutrient elements in pl

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25

Waldron, Lucy Anne. "The nutritive value of different wheat varieties for broiler chickens." Thesis, Open University, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.338547.

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26

Shouyang, Liu. "Phenotyping wheat by combining ADEL-Wheat 4D structure model with proximal remote sensing measurements along the growth cycle." Thesis, Avignon, 2016. http://www.theses.fr/2016AVIG0685/document.

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La production agricole doit augmenter plus rapidement pour répondre à la demande alimentaire mondiale dans un avenir proche. Le phénotypage, c'est-à-dire la surveillance quantitative des variables de l'état des cultures et du fonctionnement quantitatif de la canopée, a été reconnu comme le goulot d'étranglement pour accélérer le progrès génétique et augmenter le rendement. Le phénotypage sur le terrain est obligatoire car il permet d'évaluer les génotypes dans des conditions naturelles de champ. Les progrès technologiques des capteurs, de la communication et de l'informatique favorisent le dév

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27

Haddad, G. A. "Influence of nitrogen on the growth of winter wheat on restored opencast land." Thesis, University of Newcastle Upon Tyne, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.377658.

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28

Catley, Merryn Anne. "Studies of the genetic control of grain growth and the pattern of amyloplast DNA accumulation during the endosperm development in wheat." Thesis, University of Cambridge, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.235819.

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29

Ehsanzadeh, Parviz. "Agronomic and growth characteristics of spring spelt compared to common wheat." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ37882.pdf.

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30

Rajper, Inayatullah. "The effects of sodicity on the growth and yield of wheat." Thesis, Bangor University, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.297714.

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31

Vincent, Colin. "Effects of temperature on root growth and development of winter wheat." Thesis, University of Reading, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.286899.

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32

Traynor, Mary. "Root growth in drying soil : a role for ABA?" Thesis, Lancaster University, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.322894.

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33

Matthews, Sharon Sarah. "The response of wheat to inoculation with the diazothroph Azorhizobium caulinodans." Thesis, University of Nottingham, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.368250.

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34

Wiese, Jacobus Daniel. "The effect of crop rotation and tillage practice on soil moisture, nitrogen mineralisation, growth, development, yield and quality of wheat produced in the Swartland area of South Africa." Thesis, Stellenbosch : Stellenbosch University, 2013. http://hdl.handle.net/10019.1/80027.

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Thesis (MScAgric)--Stellenbosch University, 2013.<br>ENGLISH ABSTRACT: This study was done during 2010 and 2011 as a component study within a long-term crop rotation/soil tillage trial that was started in 2007 at the Langgewens Research Farm near Moorreesburg in the Western Cape Province of South Africa. The aim of this study was to determine the effect of crop rotation and soil tillage on the soil moisture content, mineral-N levels of the soil, leaf area index, chlorophyll content of the flag leaf, biomass production, grain yield and grain quality of spring wheat (Triticum aestivum L).

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35

Malik, Iram. "The effects of ozone and salinity on wheat (Triticum aestivum L.)." Thesis, Imperial College London, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.343901.

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36

Pharudi, Joseph Albert. "Effect of mycorrhizal inoculation and phosphorus levels on growth and yield of wheat and maize crops grown on a phosphorus deficient sandy soil." Thesis, Stellenbosch : University of Stellenbosch, 2010. http://hdl.handle.net/10019.1/5135.

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37

Hossain, A. H. M. Sakhawat. "Mechanisation of wheat production in Bangladesh based on a growth modelling approach." Thesis, University of Newcastle Upon Tyne, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.241559.

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38

Harris, Joanna Mary. "An assessment of bacterial inoculants of winter wheat (Triticum aestivum L.) under temperate conditions." Thesis, University of Nottingham, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.330169.

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39

Mulaudzi, Renolda Ipeleng. "Assessment of plant growth promoting rhizobacteria for plant growth enhancement and biocontrol activity against Fusarium pseudograminearum on wheat." Diss., University of Pretoria, 2019. http://hdl.handle.net/2263/77860.

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Plant growth promoting rhizobacteria (PGPR) are those bacteria that colonise the rhizosphere of various plants and promote growth either directly by improving nutrient uptake by the plant roots or indirectly through the control of pathogens. Due to the negative effects associated with the prolonged use of chemical fertilizers and fungicides, a lot of emphasis is now being given to research that investigates an alternative, sustainable and environmentally friendly method of crop production and protection. In the current study, a collection of rhizobacterial isolates from the University of Preto

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40

Ottman, M. J., T. A. Doerge, and E. C. Martin. "Late Season Water and Nitrogen Effects on Durum Quality, 1995 (Final)." College of Agriculture, University of Arizona (Tucson, AZ), 1996. http://hdl.handle.net/10150/202421.

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Durum grain quality is affected by many factors, but water and nitrogen are factors that the grower can control. The purpose of this research was to determine 1) the nitrogen application rate required at pollen shed to maintain adequate grain protein levels if irrigation is excessive or deficient during grain fill and 2) if nitrogen applications during grain fill can elevate grain protein. Field research was conducted at the Maricopa Agricultural Center using the durum varieties Duraking, Minos, and Turbo. The field was treated uniformly until pollen shed when nitrogen was applied at rates of

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41

Husman, S. H., and M. J. Ottman. "Intensive Cereal Management for Durum Production, Buckeye, 1996." College of Agriculture, University of Arizona (Tucson, AZ), 1996. http://hdl.handle.net/10150/202422.

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42

Knowles, Tim C., Michael J. Ottman, and Rock Cramer. "Influence of Nitrogen Fertilizer Applied at Flowering on Durum Wheat Grain Yield and Quality." College of Agriculture, University of Arizona (Tucson, AZ), 1996. http://hdl.handle.net/10150/202440.

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Application of nitrogen (N) fertilizer in conjunction with the irrigation event occurring closest to the flowering stage is effective in reducing the incidence of yellowberry and boosting grain protein levels of durum wheat. However, N applications at this time normally do not increase grain yield, except perhaps on very sandy soils. A field experiment was conducted to determine the profitability of applying 35 pounds of N per acre at flowering to durum wheat to avoid dockage for poor grain quality. Two treatments consisted of a check plot with no N applied at flowering and UAN 32 water run at

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43

Husman, S. H., and M. J. Ottman. "Nitrogen Fertilization of Durum Based on Stem Nitrate, Buckeye, 1996." College of Agriculture, University of Arizona (Tucson, AZ), 1996. http://hdl.handle.net/10150/202441.

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44

Tibbitts, Spencer A. "Effect of Silicon on Wheat Growth and Development in Drought and Salinity Stress." DigitalCommons@USU, 2018. https://digitalcommons.usu.edu/etd/6925.

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Silicon is a major component of most soils, and is found in significant concentration in plant tissue. Plants vary widely in the amount of silicon they take up, with some plants excluding it, and others using transporters to move the silicon from the soil into their roots. Early plant physiology studies were unable to determine conclusively whether silicon was essential to plant growth, but for some plants, most notably rice, it has proved to be important enough to justify fertilizing silicon deficient fields. Researchers at the USU Crop Physiology Lab tested the effect of silicon on wheat gro

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45

Ntiamoah, Charles. "Effects of temperature, photoperiod, and vernalization on the growth, development, and predictions by the CERES-wheat model, for spring wheat cultivars." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/NQ62662.pdf.

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46

Day, A. D., F. R. Katterman, and J. R. Wilson. "Effects of an Extract from Municipal Wastewater on the Growth of Barley." College of Agriculture, University of Arizona (Tucson, AZ), 1985. http://hdl.handle.net/10150/200514.

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47

Fauzi, Mohamad Taufik. "The effect of growth regulators and nitrogen on Fusarium head blight of wheat /." Thesis, McGill University, 1992. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=69547.

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Plant growth regulators and nitrogen fertilization have been associated with the increased incidence of fusarium head blight, a destructive disease of wheat (Triticum aestivum L.). In Canada, the major causal organism of this disease is Fusarium graminearum Schwabe, the conidial state of Gibberella zeae (Schw.) Petch. Most studies concerning the effect of plant growth regulators on fusarium head blight were conducted in fields with natural infection. The objective of this research was to evaluate the effect of growth regulators and nitrogen fertilizer on the incidence of fusarium head blight o

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48

McCallum, Kevin Reid. "An evaluation of green-waste compost in the growth and yield of wheat." Thesis, Open University, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.392880.

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49

Barber, Henry Mark. "Identifying beneficial traits for heat stress around reproductive phases of growth in wheat." Thesis, University of Reading, 2017. http://centaur.reading.ac.uk/75741/.

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There is a need for heat tolerant traits in wheat to be identified in order to maintain and increase yields in future climates. The aim of this project was to assess genotypic variation in crop response to heat stress by comparing a southern European wheat genotype (Renesansa; Rht-D1a, Rht8, Ppd-D1a) with a UK genotype (Savannah; RhtD1b, Ppd-D1b, 1BL/1RS) and their doubled haploid progeny. This would allow for the identification of traits and alleles that would benefit UK and European wheat production under climate change scenarios through the use of a combination of phenotyping, genotyping an

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50

Mbave, Zwidofhelangani Aubrey. "Water stress effects on growth, yield and quality of wheat (Triticum aestivum L.)." Diss., University of Pretoria, 2013. http://hdl.handle.net/2263/24146.

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Understanding the effects of water stress on wheat growth, yield and quality is essential for good irrigation management. In South Africa most of the wheat production areas are vulnerable to drought stress during crop development. That causes substantial reduction in grain yield, depending on the developmental stage at which water stress occurred. Supplemental irrigation is the main strategy for adaptation and stabilisation of yield under water stress. However, agriculture is the leading single water-use sector locally, consuming about 60% of total available water. Therefore, the need to impro

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