Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 105 for “"Drought tolerance"”.
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Drought-Tolerance Comparison of Aleppo Pine and Brutia Pine Seedlings
<p>Seedlings of Pinus halepensis and P. brutia were grown from seeds in a greenhouse. When 6 months old, randomly sampled seedlings were subjected to water stress by withholding irrigation. During this period, foliage and root characteristics of seedlings not under moisture stress were recorded. …
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Genomic and Physiological Approaches to Improve Drought Tolerance in Soybean
<p>Drought stress is a major global constraint for crop production, and improving crop tolerance to drought is of critical importance. Direct selection of drought tolerance among genotypes for yield is limited because of low heritability, polygenic control, epistasis effects, and genotype by …
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Gene expression associated with drought tolerance in Xerophyta viscosa Baker
… 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 …
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Evaluation of Drought Tolerance and Forage Characteristics of Millet Cultivars
… 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 …
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Variation in Drought Tolerance Attributes Among Tepary Bean (Phaseolus acutifolius) Germplasm
… cultivated by smallholder growers mainly in the drought prone Sekhukhune District of Limpopo Province. Currently, there are no significant breeding efforts aimed at cultivar development of this crop and it remains under-utilized despite the potential of the crop. Therefore, this study evaluated …
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Analysis of cold acclimation ability and drought tolerance of Petunia spp
Thesis (M.S.)--Michigan State University. Department of Plant Breeding and Genetics - Horticulture, 2009
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Leaf Functional Traits as Predictors of Drought Tolerance in Urban Trees
… 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 …
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Evaluations of soybean genotypes for drought tolerance and charcoal rot resistance
… the most important sources of oil and protein. Drought stress is one of the major constraints to soybean yield in the United States. Charcoal rot of soybean, caused by Macrophomina phaseolina, is a soil-borne fungal pathogen that infects over 500 plant species worldwide and also has been known …
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Drought tolerance and implications for vegetation-climate interactions in the Amazon forest
… timescales, the Amazon forest is resistant to drought, but more severe droughts can have profound effects on ecosystem productivity and tree mortality. The majority of climate models predict decreased rainfall in tropical South America over this century. Until recently, land surface models have …
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NAC transcription factors in sugarcane and their functional role in drought tolerance
… in many countries, including South Africa, where drought severity and frequency are expected to increase in the coming decades. This underscores the need for genetic engineering strategies to enhance drought tolerance and ensure the long-term sustainability of sugarcane production. Conventional …
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Genetics of Physiological Traits Associated with Drought Tolerance in Soybean (Glycine max)
… States, and its production is often limited by drought stress. Physiological traits from exotic germplasm that confer drought tolerance may be useful in improving commercial soybean production. For example, carbon isotope ratio (δ13C) is positively correlated with water use efficiency (WUE), and …
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ASSOCIATION MAPPING OF GENE REGIONS FOR DROUGHT TOLERANCE AND AGRONOMIC TRAITS IN SORGHUM
… of sorghum (Sorghum bicolor (L.) Moench) for drought tolerance and grain yield is challenging because of the complex nature of these traits. To make this process more tractable, studies were conducted to investigate the genetic architecture of these traits by employing a novel multi-parent …
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Evaluation of drought tolerance in genetically modified Lolium perenne L. and Arabidopsis thaliana
… functions including a potential role in drought tolerance of perennial ryegrass (Lolium perenne L.). UBLs are related in tertiary structure to ubiquitin (UB) and they both serve as regulators of many cellular processes. In previous work over-expression of one UBL, the Lolium perenne L. …
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Influence of Plant Growth Regulators on Turfgrass Growth, Antioxidant Status, and Drought Tolerance
… conducted to examine the antioxidant status, drought and disease tolerance, and growth response to foliar application of soluble seaweed (Ascophyllum nodosum) extracts (SE) and humic acid (HA; 25% active HA or 2.9% active HA) in tall fescue (Festuca arundinacea Schreb), Kentucky bluegrass (Poa …
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Plant traits and drought tolerance in the savanna : a Kruger National Park case study
… functional traits that can be associated with drought tolerance/avoidance and to test whether wood density is a good indicator of drought tolerance. The study was carried out in Kruger National Park in the month of June. A number of plant traits including wood density, leaf thickness, leaf life …
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Investigating the Role of RAP2.12 and GAPDH in Photosynthetic CO2 Fixation to Improve Drought Tolerance
… identified as being important in influencing drought-induced transcriptional responses of the genes that encode for enzymes of the Calvin cycle. These genes are the drought-inducible transcription factor RAP2.12, the Calvin cycle gene GAPA-2 and a putative transcription factor (At1g16750) …
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Leveraging genomic mapping and QTL analysis to enhance drought tolerance of cultivated peanut (Arachis hypogaea L.)
… States, and its productivity is often limited by drought stress. Drought negatively impacts the yield and quality of peanut. Drought stress in peanut causes an annual loss of approximately $520 million in the United States. Improving peanut yield under water deficit conditions is crucial for …
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