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Dissertations / Theses on the topic 'Tolerance to drought'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Osman, Mohamoud, Albert Dobrenz, Haile Tewolde, and Robert Voigt. "Drought Tolerance in Pearl Millet." College of Agriculture, University of Arizona (Tucson, AZ), 1986. http://hdl.handle.net/10150/200578.

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2

McDaniel, R. G., and A. K. Dobrenz. "Physiological Studies of Cotton Drought Tolerance." College of Agriculture, University of Arizona (Tucson, AZ), 1992. http://hdl.handle.net/10150/208659.

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We evaluated an array of progeny of interspecific cotton crosses in the field. Significant water stress was placed on the plants in mid-summer by withholding water supplied by drip irrigation during plant development earlier in the season. A number of physiological measurements were carried out on selected individual plants of this population during the several week period of imposed drought stress. Overall results confirm that a large degree of variation exists within the population for all traits measured. Initial carbon isotope discrimination measurements suggest this trait may prove useful

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3

BIANCHI, DAVIDE. "GRAPEVINE ROOTSTOCK CHARACTERIZATION FOR DROUGHT TOLERANCE." Doctoral thesis, Università degli Studi di Milano, 2021. http://hdl.handle.net/2434/896313.

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Grapevine is worldwide grafted on rootstocks to create a biological barrier to the phylloxera (Daktulosphaira vitifoliae). Despite the key role of rootstock in the adaptation to environmental conditions, a limited number of genotypes is available for winegrowers, showing a narrow genetic background. The gap between the importance of rootstocks in abiotic stress tolerance and their low genetic variability leads to consider rootstock breeding as a promising strategy to face climate change. In the last decades, new breeding programs were developed with the aim to provide new rootstocks able to co

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4

Rodriguez-Acosta, Maricela. "Ecophysiology and genetics of drought tolerance in Populus." Thesis, University of Southampton, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.436975.

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5

Cawley, Leigh Eric. "Pollutant nitrogen and drought tolerance in heathland plants." Thesis, Manchester Metropolitan University, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.341054.

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It has been suggested that pollutant nitrogen inputs adversely influence the response of heathland plants to certain climatic and biotic stresses. One specific hypothesis being that elevated nitrogen deposition may reduce drought tolerance in heathland vegetation. However, there is little evidence from field studies that this is the case. The aims of this research project have been firstly to establish the effects of increased nitrogen inputs upon plant water relations in certain dwarf heathland shrubs under winter and summer drought conditions. Secondly, to contribute to the understanding of

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6

Jesus, Cláudia Marisa de. "Salicylic acid and drought tolerance improvement in Eucalyptus." Master's thesis, Universidade de Aveiro, 2014. http://hdl.handle.net/10773/13377.

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Mestrado em Biologia Aplicada<br>Covering approximately 20 million ha, Eucalyptus genus is the most widely planted hardwood trees all over the world. In the Mediterranean region, the positive performance of Eucalyptus plantations is conditioned by low water availability that strongly limits forest productivity and alters plant growth and development. Plant drought tolerance can be managed by adopting strategies such as exogenous application of hormones. Salicylic acid (SA) is a plant endogenous regulator of growth (PGR) that has been reported as a compound playing a key role in plants response

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7

Binase, Ntombikayise. "Novel gold nanoparticles of drought tolerance enabler GYY4137." University of the Western Cape, 2019. http://hdl.handle.net/11394/6986.

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>Magister Scientiae - MSc<br>Different nanoparticles have the ability to improve plant tolerance to drought stress. In the study we report for the first time novel morpholin-4-ium 4-methoxyphenyl (morpholino) phosphinodithioate capped- gold nanoparticles (GYY4137-capped AuNPs). The GYY4137 is a slow releasing hydrogen sulfide (H2S) donor. The GYY4137 AuNPs compared to preliminary experiments of L-serine and L-threonine gold nanoparticles. The nanoparticles were prepared using a simple reflux reduction method in a rolling boil flask at 80 oC. The uncapped GYY4137-AuNPs were relatively stable an

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8

Cominelli, E. "PLANT TOLERANCE TO DROUGHT: MODULATION OF TRANSCRIPTION FACTORS." Doctoral thesis, Università degli Studi di Milano, 2011. http://hdl.handle.net/2434/150909.

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Water scarcity is a serious problem that will be exacerbated by global climate change. Massive quantities of water are used in agriculture, and abiotic stresses, especially drought and increased salinity, are primary causes of crop loss worldwide. Various approaches may be adopted to consume less water in agriculture, one of them being the development of plants that use less water yet maintain high yields in conditions of water scarcity. In recent years several molecular networks concerned with stress perception, signal transduction and stress responses in plants have been elucidated. In thi

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9

Albertini, A. "PLANT TOLERANCE TO DROUGHT: MODULATION OF STOMATAL MOVEMENTS." Doctoral thesis, Università degli Studi di Milano, 2012. http://hdl.handle.net/2434/214277.

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Plants are continuously exposed to several types of abiotic and biotic stresses. As sessile organisms, the mechanisms developed by plants to respond to those stresses are extremely vital for the plant growth and survival. Drought is one of the most common environmental stresses to which plants are exposed and the major cause of losses in crop production throughout the world. One of the primary plant response against water loss and dehydration is reducing the transpiration from the leaves by the closure of stomatal pores, guard cells in fact sense and respond to the environmental changes by the

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10

ABIDO, MOHAMMAD SULEIMAN. "MORPHO-PHYSIOLOGICAL EVALUATIONS OF ALEPPO AND BRUTIA PINE SEEDLINGS UNDER TWO DIFFERENT MOISTURE REGIMES (SYRIA, AFFORESTATION, CHLOROPLASTS)." Diss., The University of Arizona, 1986. http://hdl.handle.net/10150/188171.

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The mechanism of drought resistance in the seedlings of Aleppo pine (Pinus halepensis) and Brutia pine (Pinus brutia) was investigated. Both species showed anatomical and morphological adaptations to conserve moisture. Aleppo pine had a thicker cuticle, fewer stomata per unit length, per unit area, and per needle than Brutia pine. A significant number of Aleppo pine stomata were sealed with a waxy layer. Brutia pine had shorter needles, smaller needle surface area, a smaller surface area-to-volume ratio, and longer main root length. The two species were similar in height growth and in the seas

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11

Shawesh, Guimaa Ali 1950. "STOMATAL FREQUENCY IN DROUGHT-TOLERANT AND DROUGHT-SUSCEPTIBLE SORGHUM BICOLOR (L.) MOENCH GENOTYPES GROWN UNDER MOISTURE STRESS AND NONSTRESS." Thesis, The University of Arizona, 1986. http://hdl.handle.net/10150/275503.

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12

Ocheltree, Troy W. "Growth and survival during drought: the link between hydraulic architecture and drought tolerance in grasses." Diss., Kansas State University, 2012. http://hdl.handle.net/2097/13803.

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Doctor of Philosophy<br>Department of Agronomy<br>P.V. Vara Prasad<br>The pathway for the movement of water through plants, from the soil matrix to the atmosphere, constitutes the hydraulic architecture of a plant. The linkage between the hydraulic architecture of woody plants and drought tolerance has received considerable attention, but much less work has been done on grasses. I investigated the linkage between the hydraulic architecture of grasses to physiological patterns of water use across a range of species and conditions. The rate of stomatal conductance (g[subscript]s) and photosyn

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13

Bonner, Donald M. "Comparative water relations and drought tolerance among alfalfa cultivars." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/mq23227.pdf.

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14

McDaniel, R. G., and A. K. Dobrenz. "Drought Tolerance in the Progeny of Interspecific Cotton Hybrids." College of Agriculture, University of Arizona (Tucson, AZ), 1993. http://hdl.handle.net/10150/209552.

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The F2 and F3 progeny of interspecific cotton crosses were evaluated under field conditions. The plants were maintained under drip irrigation with stress applied by withholding water during plant development and early flowering periods. Physiological and biochemical plant responses were measured throughout the growing season on an array of representative plants from the field population. Considerable variability was found to exist among these progeny for all traits measured in both years of the present study. Responses of parental controls were quite consistent for both seasons.

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15

Newell, Trenton D. "Drought tolerant corn response to water availability." Thesis, Kansas State University, 2016. http://hdl.handle.net/2097/32674.

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Master of Science<br>Department of Agronomy<br>Kraig L. Roozeboom<br>Due to decreased availability of irrigation water in central and western Kansas and an increase in water restrictions, producers are looking for more efficient ways to use available irrigation water. Drought-tolerant technologies have become popular in hybrids for stress-prone environments across central and western Kansas and are marketed for their ability to produce greater grain yields with less water. The objective of this research was to understand how DT and non-DT corn hybrids respond in a wide range of environmental c

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16

Dewey, Daniel Wade. "Physiological and genetic control of water stress tolerance in zoysiagrass." Texas A&M University, 2005. http://hdl.handle.net/1969.1/3172.

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Significant cultivar difference in many water stress responses of zoysiagrass (Zoysia japonica (Steud.) and Zoysia matrella (L.) Merr.) are shown in this study. Of the four cultivars, Palisades was the most water stress tolerant, had the most negative turgor loss point, and leaf rolled after loss of full turgor pressure. On the other end of the spectrum, Diamond was the least water stress tolerant, had the lowest full turgor pressure, the least negative turgor loss point, and leaf rolled at full turgor. Differences between Diamond, Cavalier, Palisades, and DALZ 8504 in leaf rolling, loss of fu

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17

AGBARY, ABDUL WALLY. "HERITABILITY AND PHYSIOLOGY OF DROUGHT TOLERANCE IN SORGHUM (SORGHUM BICOLOR (L.) MOENCH)." Diss., The University of Arizona, 1985. http://hdl.handle.net/10150/187991.

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Physiological responses of 12 sorghum (Sorghum bicolor L.) genotypes previously classified as drought resistant and susceptible upon grain yield basis were evaluated under dry and wet moisture treatments at Tucson, Arizona in 1983. In addition, the relationship of these physiological responses and their heritability estimates were also determined. Apparent photosynthesis, transpiration, diffusive resistance, temperature differentials, and leaf temperature were measured under field conditions at three intervals from planting date: 48, 62, and 77 days, respectively. Stomatal density and epicutic

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18

Na, Jong Kuk. "Genetic approaches to improve drought tolerance of tomato and tobacco." Connect to resource, 2005. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1127245631.

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Thesis (Ph. D.)--Ohio State University, 2005.<br>Title from first page of PDF file. Document formatted into pages; contains xv, 104 p.; also includes graphics (some col.). Includes bibliographical references (p. 93-104). Available online via OhioLINK's ETD Center

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19

Smith, Lauren M. "Mapping of drought tolerance and leaf rust resistance in wheat." Thesis, Manhattan, Kan. : Kansas State University, 2008. http://hdl.handle.net/2097/799.

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20

Terry, Andrew Charles. "Growth and development of sorghum in relation to drought tolerance." Thesis, University of Nottingham, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.235731.

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21

Sadaqat, Hafeez Ahmad. "Genetic and physiolgical basis of drought tolerance in oilseed brassicas." Thesis, University of Liverpool, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.367179.

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22

Ndima, Tozama Beauty. "Gene expression associated with drought tolerance in Xerophyta viscosa Baker." Master's thesis, University of Cape Town, 2000. http://hdl.handle.net/11427/4309.

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Bibliography: leaves 89-100.<br>Herophyta viscosa (Baker) is a monocytyledonous resurrection plant that can tolerate extremes of dessication. Upon rewatering, it rehydrates completely and assumes its full physiological activities. Studies on changes in gene expression associated with dehydration stress tolerance were conducted. A cDNA library constructed from m RNA isolated from dehydrated (85%, 37% and 5% relative water content) X. viscosa leaves, was differently screened. Of the 192 randomly selected cDNAs screened, 30 showed higher expression levels when X. viscosa was dehydrated while 20 s

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23

Tine, Fatou. "Evaluation of Drought Tolerance and Forage Characteristics of Millet Cultivars." Thesis, Virginia Tech, 2016. http://hdl.handle.net/10919/81306.

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Millets are C4 annual grasses that are mainly used for food and feed. This thesis describes two studies that evaluated drought tolerance of pearl millet cultivars (Pennisetum glaucum [L.] R. Br) grown for grain. A third study is also included in the thesis that evaluated foxtail millet (Setaria italica [L] Beauv) and pearl millet grown as cover crops and forage during a pasture renovation. The main focus of the thesis involved evaluation of Senegalese pearl millet cultivars for drought tolerance. Drought is one of the most important threats to pearl millet production in Senegal as it limits yi

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24

Groene, Grant Anthony. "Evaluating sorghum and maize germplasm for post-anthesis drought tolerance." Thesis, Manhattan, Kan. : Kansas State University, 2008. http://hdl.handle.net/2097/1117.

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25

Morgan, Michael John. "Increasing seed germination and quantifying drought tolerance of Bursera graveolens." [Gainesville, Fla.] : University of Florida, 2009. http://purl.fcla.edu/fcla/etd/UFE0041327.

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26

Doheny-Adams, Timothy. "Manipulating stomatal density affects plant growth, yield and drought tolerance." Thesis, University of Sheffield, 2013. http://etheses.whiterose.ac.uk/4180/.

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Photosynthesis in leaves is dependent on CO2 reaching mesophyll cells which contain the bulk of chlorophyll, yet most of the leaf is enveloped by a waxy cuticle which is almost impermeable to CO2 and water. Gas exchange is enabled through pores on the leaf epidermis called stomata which are each formed by two specialised guard cells morphologically distinct from general epidermal cells and able to react to their environment by increasing or decreasing cell turgor. This enables the stomatal pores to open or close depending on the plant’s need to acquire CO2 or conserve water, allowing much need

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27

Khan, Nusrat. "Exploring sugar metabolism in bread wheat for improving drought tolerance." Thesis, Khan, Nusrat (2019) Exploring sugar metabolism in bread wheat for improving drought tolerance. PhD thesis, Murdoch University, 2019. https://researchrepository.murdoch.edu.au/id/eprint/52051/.

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Remobilization of stem WSC is well known to contribute to grain yield in wheat. There is, however, extensive genetic variation in the contribution of stem WSC to grain yield under post-anthesis water-deficit. Fructan 1-exohydrolase (1-FEH) is one of the major enzymes contributing to WSC remobilisation and the maintenance of grain yield under water-deficit. 1-FEH has three isoforms (1-FEH w1, w2 and w3) that degrade β - (2-1) fructan linkages thus contributing to fructan remobilization to grain. This thesis investigated the functional role of the three isoforms of the 1-FEH gene in WSC remobili

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28

Janislampi, Kaerlek W. "Effect of Silicon on Plant Growth and Drought Stress Tolerance." DigitalCommons@USU, 2012. https://digitalcommons.usu.edu/etd/1360.

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Silicon is not considered an essential nutrient, but it is typically abundant in soils and can be taken up in large amounts by plants. Silicon is known to have beneficial effects when added to rice and several other plants. These effects include disease and insect resistance, structural fortification, and regulation of the uptake of other ions. In this study, the effect of silicic acid fertilization on the growth and drought tolerance of four crop plants (corn, wheat, soybean, and rice) was analyzed. Plants were studied using three cultivation techniques: 1) hydroponic solution and subjected t

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29

PONNAIAH, MAHARAJAH. "Addressing drought tolerance in maize by trascriptional profilino and mapping." Doctoral thesis, Università degli Studi di Milano, 2007. http://hdl.handle.net/2434/63635.

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30

Hughes, Ruth. "Serpentine tolerance in the Mimulus guttatus complex." Thesis, University of Exeter, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.286489.

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31

Longenberger, Polly Suzanne. "Development of a screening method for drought tolerance in cotton seedlings." Texas A&M University, 2005. http://hdl.handle.net/1969.1/4765.

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The key to an efficient screening method is the ability to screen large amounts of plant material in the shortest time possible. Unfortunately, due to the complexity of drought tolerance, a quick and effective screen for this trait has yet to be established. The research reported herein was designed to evaluate a screening method for drought tolerance in cotton (Gossypium hirsutum L.) seedlings. Twenty-one converted race stocks (CRS) and two cultivars were evaluated for seedling drought tolerance on an individual plant basis. CRS are day-sensitive primitive lines derived from various wild race

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Wright, J. C. "Anhydrobiosis in tardigrades." Thesis, University of Oxford, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.233589.

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33

Stark, Jennifer Grace. "The establishment, drought tolerance, and weed suppression potential of multispecies sod." Thesis, Montana State University, 2009. http://etd.lib.montana.edu/etd/2009/stark/StarkJ0509.pdf.

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Re-seeding is a frequently used technique to revegetate disturbed areas, but often leaves bare ground prone to weed invasion. Mixtures of drought tolerant or native species in sod could be used as an alternative to seed to provide rapid establishment of desirable plant communities that may potentially reduce weed emergence, survival, and productivity. Additionally, the reinforcement material required to aid transport of multispecies sod could further contribute to weed suppression and sod establishment. The objective of this study was to evaluate the weed suppression and establishment potentia

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34

Shiferaw, Belay. "A study of drought tolerance in tef (Eragrostis tef (Zucc.) Trott.)." Thesis, Imperial College London, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.422429.

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35

Bhutto, Liaquat Ali. "Understanding the mechanisms of drought tolerance in wheat (Triticum aestivum L.)." Thesis, University of Sheffield, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.522505.

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36

Huang, Sophia. "Leaf Functional Traits as Predictors of Drought Tolerance in Urban Trees." DigitalCommons@CalPoly, 2019. https://digitalcommons.calpoly.edu/theses/2035.

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The services that urban trees provide to human society and the natural environment are widely recognized, but urban trees are in jeopardy due to climate change and urban stressors. With drought as a major threat in many areas, it is important for the future of urban forestry to select species composition based upon performance under water stress. Certain leaf functional traits can help horticulturalists more accurately predict water usage of urban trees. Comprehension through rigorous experimentation is lacking, partly due to the thousands of mostly exotic species. Previous studies suggest tha

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37

Johnson, Stephanie. "The mechanisms of drought stress tolerance in the crop Sorghum bicolor." Thesis, Durham University, 2016. http://etheses.dur.ac.uk/11426/.

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Drought stress can have a major impact upon plant survival and crop productivity. Sorghum bicolor is an important cereal crop grown in the arid and semi-arid regions of >98 different countries. It is well adapted to the harsh drought-prone environments in which it is grown however; relatively few studies have investigated the molecular basis of these adaptations. Breeding programs have lead to the identification of ‘stay-green’ varieties, so-called due to their ability to maintain green photosynthetic leaf area for longer under drought conditions. However, despite extensive breeding efforts to

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Pessarakli, Mohammed, K. B. Marcum, and David M. Kopec. "Drought Tolerance of Twenty one Saltgrass (Distichlis) Accessions Compared to Bermudagrass." College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 2001. http://hdl.handle.net/10150/216354.

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Fourteen (14) Arizona accessions and 7 Colorado accessions of Saltgrass (Distichlis spicata), collected from Arizona and Colorado and 1 Bermudagrass (Cynodon dactylon), cultivar Midiron (check), were studied in a greenhouse to evaluate their growth responses in terms of shoot dry weights and percentage of visual green under drought stress conditions. Plants were grown under normal (daily watering and weekly fertilizer application) for one year for complete establishment. Then, the plants were deprived from water for four months (January 5, 2001 - May 5, 2001). Plant clippings were harvested we

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Keshtkar, Amir Hossein. "Genetic and physiological basis of drought tolerance in barley (Hordeum vulgare L.)." Thesis, University of Liverpool, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.491363.

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'Vater availability is the main factor limiting agricultural productivity and may result in considerable yield reduction around the world. Therefore, identification of genetic variation for drought tolerance and exposure of this variation to appropriate drought conditions for selection are the main objectives of research for many crop plants. In this study twenty-five barley (Hordeum vulgare L.) populations consisting of accessions, landraces and modern varieties from different parts of the world, mainly arid, semi-arid and Mediterranean regions, were grown in PEG (6000) solutions in a control

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Mutava, Raymond Ngao. "Evaluation of sorghum genotypes for variation in canopy temperature and drought tolerance." Diss., Kansas State University, 2012. http://hdl.handle.net/2097/14506.

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Doctor of Philosophy<br>Department of Agronomy<br>P.V. Vara Prasad<br>Sorghum (Sorghum bicolor L. Moench) is the fifth most economically important cereal crop grown worldwide and adapted to a wide range of climatic conditions. Drought stress has been ranked as one of the most significant causes of crop yield loss with its effects on yield and yield components. Conservative water use by plants is one of the strategies that can be used as a drought coping mechanism. The slow wilting trait has been associated with conservative water use and has been found in some sorghum genotypes. The purpose o

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Dastogeer, Khondoker. "Do mutualistic organisms associated with wild Nicotiana benthamiana plants influence drought tolerance?" Thesis, Dastogeer, Khondoker (2017) Do mutualistic organisms associated with wild Nicotiana benthamiana plants influence drought tolerance? PhD thesis, Murdoch University, 2017. https://researchrepository.murdoch.edu.au/id/eprint/40217/.

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In arid regions, such as those in north-western Australia, plants survive under water deficit, high temperatures, intense solar radiation and nutrient-impoverished soils. They employ various morphophysiological and biochemical adaptations including interaction with microbial symbionts. Seed from thirty-two accessions of four Nicotiana species (N. benthamiana, N. occidentalis, N. simulans, and N. umbratica) collected from wild plants from northern Australia, were grown and used to assess their responses to water stress. The original wild host plants were selected because they grow in an extreme

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Fidelibus, Matthew, Chris Martin, and Jean Stutz. "Contributions of Beneficial Soil Fungi to Drought Stress Tolerance of Young Citrus." College of Agriculture, University of Arizona (Tucson, AZ), 1997. http://hdl.handle.net/10150/220566.

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Four arbuscular mycorrhizal (AM) fungal isolates (Glomus sp.) from disparate edaphic conditions were screened for effects on whole -plant transpiration of juvenile 'Volkamer' lemon (Citrus volkameriana Ten. and Pasq.) plants of similar shoot mass and canopy leaf area. Mycorrhizal and non -mycorrhizal plants were grown in 8 -liter containers for 2.5 months under well- watered conditions before subjection to three consecutive soil drying episodes of increased severity (soil moisture tensions of -0.02 [still moist], -0.06 [moderately dry], and -0.08[dry] MPa respectively). Whole plant transpirati

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Basson, Gerhard Leroy. "3,3'-diindolylmethane improves drought tolerance of Zea mays through enhancing antioxidant activity." University of the Western Cape, 2018. http://hdl.handle.net/11394/6750.

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>Magister Scientiae - MSc<br>Maize is one of the most abundantly produced cereals and contributes to about 40% of the global cereal production. This figure will have to increase in order to feed the ever-growing human population. One of the major environmental constraints that impact maize production is drought. Plants use antioxidant defences to cope with drought stress. Understanding and improving these defence mechanisms will be important to improve overall drought tolerance. A previous study done by Gokul and authors in 2016 showed that 3,3’-diindolylmethane (DIM) improves both seed germin

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Leksungnoen, Nisa. "The Relationship Between Salinity and Drought Tolerance In Turfgrasses and Woody Species." DigitalCommons@USU, 2012. https://digitalcommons.usu.edu/etd/1196.

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Both salinity and drought stresses induce osmotic stress. Thus, cross-tolerance responses and mechanisms may occur in plants. The overall objectives of this study were to determine morphological and physiological responses and mechanisms of turfgrasses and woody species under salinity and drought stress conditions, and determine the relationship between drought and salinity tolerance ability in those species. Five turfgrass entries, ‘Gazelle’ and ‘Matador’ tall fescue (TF), ‘Midnight’ Kentucky bluegrass (KBG), PI368233 (Tolerant KBG), and PI372742 (Susceptible KBG), and three woody species, bi

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Metcalfe, J. C. "Physiological responses of three agricultural grasses to water deficit." Thesis, Lancaster University, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.381781.

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46

Mandumbu, Ronald. "The stability of tolerance of Sorghum spp to Striga asiatica L. Kuntze under diverse conditions and existence of pre-attachment resistance." Thesis, University of Fort Hare, 2017. http://hdl.handle.net/10353/2788.

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Sorghum is the fifth most important cereal in the world and a staple food for humans. It is also a source of food and fodder for animals. In addition to the abiotic stresses such as drought, parasitic weeds of the genus Striga cause losses in sorghum production in sub Saharan Africa. Striga asiatica is a parasitic weed that attacks cereals in low input agricultural systems and is distributed throughout semi- arid regions of Africa. Most sorghum producing farmers rely on tolerance for their harvests in Striga infested fields yet the stability of tolerance in the face of a changing climate (recu

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Hu, Ying. "The roles of glutaredoxin GRXS17 in improving chilling tolerance in tomato and drought tolerance in rice via different mechanisms." Diss., Kansas State University, 2015. http://hdl.handle.net/2097/20512.

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Doctor of Philosophy<br>Horticulture, Forestry, and Recreation Resources<br>Sunghun Park<br>Abiotic stresses, including chilling and drought stresses, are considered to be major limiting factors for growth and yield of agricultural and horticultural crops. One of the inevitable consequences of abiotic stresses is the accumulation of reactive oxygen species (ROS) in plants. ROS can either act as an alarm signal to induce the defense pathway when kept at a low level or cause oxidative damage to various cellular components when increased to a phytotoxic level. Glutaredoxins (GRXs) are members of

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Denny, Geoffrey Carlile. "Evaluation of selected provenances of taxodium distichum for drought, alkalinity and salinity tolerance." [College Station, Tex. : Texas A&M University, 2007. http://hdl.handle.net/1969.1/ETD-TAMU-1327.

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Domitruk, Daryl Raymond. "A framework for drought tolerance research in no-till winter wheat in Saskatchewan." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1996. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/nq23984.pdf.

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Khan, Nufaid [Verfasser]. "Polyamines and calcium signalling in drought tolerance of Arabidopsis and Barley / Nufaid Khan." Halle, 2017. http://d-nb.info/1143595912/34.

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