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Dissertations / Theses on the topic 'Stomatal density'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Dutton, Christian. "Interactions between stomatal density and plant disease." Thesis, University of Sheffield, 2018. http://etheses.whiterose.ac.uk/22749/.

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2

Metcalfe, Michelle J. "Monitoring environmental features using leaf stomatal characteristics." Thesis, Durham University, 1997. http://etheses.dur.ac.uk/4698/.

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It is recognised that atmospheric CO(_2) concentrations are increasing, with concerns raised as to the global impact continued rises may have. Plant stomatal parameters have been suggested as a means of monitoring changing CO(_2) levels. In order to assess their suitability for use, a thorough examination of leaf characteristics within a variety of surroundings was undertaken. Environments examined included both natural variations in CO(_2), which incorporated a variety of environmental influences and artificially enhanced ones where it was possible to monitor specific responses to variable CO

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3

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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4

Bhave, Neela S. "Functions and relationships of the TMM and SDD1 genes in arabidopsis stomatal development." The Ohio State University, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=osu1195229702.

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5

Hughes, Jonathan. "Reducing stomatal density in Hordeum vulgare improves drought tolerance and water use efficiency." Thesis, University of Sheffield, 2017. http://etheses.whiterose.ac.uk/19860/.

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Manipulation of the expression of the epidermal patterning factor (EPF) family of secreted signalling peptides in order to regulate stomatal density has previously been demonstrated to improve water use efficiency in Arabidopsis thaliana (Franks et al., 2015). Following the sequencing of the barley genome an ortholog of EPF2 was identified and overexpressed. HvEPFL1 overexpression limits both entry into, and progression through, the stomatal lineage. Lines overexpressing HvEPFL1 showed significant increases over controls in terms of both water use efficiency and drought tolerance, without a de

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6

Robertson, Brittany Clare. "Genetic determinants of stomatal density for enhanced water-use efficiency in barley (Hordeum vulgare)." Thesis, Robertson, Brittany Clare (2021) Genetic determinants of stomatal density for enhanced water-use efficiency in barley (Hordeum vulgare). Honours thesis, Murdoch University, 2021. https://researchrepository.murdoch.edu.au/id/eprint/61572/.

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Low stomatal density correlates with robustness to water deprivation and thus holds potential for the improvement of water-use efficiency (WUE) of commercially relevant crops grown in drought-prone environments. Ranking fourth in terms of global agricultural production, barley (Hordeum vulgare L.) is especially amenable to reductions in stomatal density without the caveat of yield impacts. In this study, a collection of 313 diverse barley accessions with global geographic origins was screened revealing varieties with low stomatal densities for use in future breeding programs. Through genome-wi

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7

Van, de Water Peter Kent. "δ¹³C and stomatal density variability in modern and fossil leaves of key plants in the western United States". Diss., The University of Arizona, 1999. http://hdl.handle.net/10150/289058.

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During the last deglaciation, 15,000 to 12,000 calendar years ago, global warming and wholesale shifts in regional precipitation patterns produced dramatic changes in vegetation worldwide. Paleobotanical records, namely pollen and macrofossils, have been used not only to reconstruct shifts in plant distributions and abundances, but also to quantify changes in temperature and precipitation amounts or seasonality. In addition to climatic change, during the full glacial period atmospheric CO₂ values had dropped 30% to 200 ppmv compared to the Holocene, preindustrial value of 280 ppmv. Hypothetica

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8

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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9

Dobrenz, A. K., J. Cox, B. Munda, and D. Robinson. "Stomate Density and Physiological Measurements on Leaves of Alkali Sacaton." College of Agriculture, University of Arizona (Tucson, AZ), 1988. http://hdl.handle.net/10150/200828.

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10

Fiorin, Lucia. "Spatial coordination between veins and stomata links water supply with water loss in leaves." Doctoral thesis, Università degli studi di Padova, 2013. http://hdl.handle.net/11577/3423083.

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The question of how water supply and water loss-adhibited structures integrate in leaves to perform a complex mediation among plant different necessities, and its evolutive implications, has been almost neglected so far. Hydraulic resistance in leaves accounts for 30% of the total resistance of the plant to water transport (Sack and Holbrook 2006), a dominating component of what being situated within the leaf spongy mesophyll (Cochard, Nardini, and Coll 2004). Only few recent works have identified the length of the water path from veins to evaporating sites as a limiting factor to the transpi

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11

Bal, Zeynep. "Leaf Anatomy Of Five Species Of Limonium Mill. (plumbaginaceae)." Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613227/index.pdf.

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In this study, leaf anatomies of five species of Limonium Mill. (L. echioides, L. globuliferum, L. tamaricoides, L. anatolicum and L. Sinuatum) are studied. Taca belonging to five different sections of the genus Limonium as<br>L. echioides of the section Schizyhymenium, L. globuliferum of the section Sphaerostachys, L. tamaricoides of the section Limonium, L. anatolicum of the section Sarcophyllum and L. sinuatum of the section Pteroclados are used in this study. Throughout the species studied, L. tamaricoides and L. anatolicum are endemic to Turkey. In order to examine anatomy of leaves,

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12

Rubin, Darrell. "ACUTE REGULATION OF GLUT1 FUNCTION: THE ROLE OF DETERGENT-RESISTANT MEMBRANE DOMAINS." Connect to text online, 2004. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=case1087996732.

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13

Carins, Murphy MR. "Cell expansion coordinates leaf vein and stomatal density." Thesis, 2016. https://eprints.utas.edu.au/23095/2/Carins_Murphy_whole_thesis_ex_pub_mat.pdf.

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The efficiency with which water is delivered through leaf tissue to sites of evaporation (the leaf hydraulic conductance) is an important determinant of photosynthetic capacity. This is because inadequate water supply forces stomata to close due to plant desiccation. The resulting reduction in stomatal conductance restricts carbon dioxide (CO2) uptake. An oversupply of water, on the other hand, results in unprofitable investment in vascular tissue. Accordingly, water supply is strongly correlated with the demand for water generated by stomata. Recent work suggests that this balance is a

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14

Hasanuzzaman, Md. "Physiological and morphological responses to osmotic stress in barley (Hordeum vulgare L.)." Thesis, 2018. https://eprints.utas.edu.au/30040/1/Hasanuzzaman_whole_thesis_ex_pub_mat.pdf.

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Global food production must increase by at least 70% to feed an additional 2.4 billion people by 2050 while world agriculture combats major biotic and abiotic stresses brought by the climate change. Salinity and drought are arguably the two most severe abiotic environmental stresses among these that affect agricultural crop production globally. Therefore, future food security cannot be achieved without a major breakthrough in crop breeding for salinity and drought stress tolerance. The early responses of plants to drought and salinity are similar, as both stresses result in a cellular water de

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15

Lu, Shengjun. "Seasonal and diurnal trends of leaf water potential and stomatal conductance of red alder (Alnus rubra Bong) growing along a density gradient in western Oregon /." 1989. http://hdl.handle.net/1957/10952.

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16

Scarr, Mark J. "The use of stomatal frequency from three Australian evergreen tree species as a proxy indicator of atmospheric carbon dioxide concentration." Thesis, 2011. https://vuir.vu.edu.au/16044/.

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Increasing atmospheric carbon dioxide concentration ([CO2]) is the main contributing factor to anthropogenically derived global climate change. The impact of climate change upon terrestrial ecosystems is still uncertain. If information can be obtained on how past fluctuations in [CO2] and temperature has affected terrestrial communities this knowledge can increase our understanding as to how future climate change may impact upon modern-day ecosystems. Foliar stomatal frequency analysis is a proxy-CO2 measure that may provide estimates of atmospheric [CO2] from subfossil or fossil leaf mater

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17

Chiou, Lee Nor, and 邱麗娜. "Effects of Rootstock Cultivars,Stomatal Densiuy and Grafting on! Mineral Nutrition and Carbohydrate in Mango(Mangigera indica L.)." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/83983264024473057437.

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碩士<br>國立中興大學<br>園藝學系<br>86<br>Chapter 1. Nutrient Uptake and Transport Capacities of Different Mango RootstocksSummary The objectives of thisexperiment were to investigate the mango cultivars'' abilities in the uptake and transport of mineral nutrients with special emphasis on the selection of a high Ca absorbing rootstock . The data will also be used as a guideline for the choosing of a rootstock for Chiin Whang which is a deficiency─prone cultivar and to clarify the relationship between

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