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 6 of 6 for “"Free Air Concentration Enrichment (FACE)"”.
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Investigating variation in the response of photosynthetic traits to ozone pollution in maize
Ozone is the most damaging air pollutant to crops, currently reducing Midwest U.S. maize production by up to 10%, yet there has been very little effort to adapt germplasm for ozone tolerance. Ozone enters plants through stomata, reacts to form reactive oxygen species in the apoplast, and ultimately …
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Impacts of Elevated Carbon Dioxide and Tropospheric Ozone on the Growth and Productivity of Trees
… global climate change in the 21st Century. The concentrations of two rising greenhouse gases, carbon dioxide ([CO2]) and tropospheric ozone ([O3]) have this potential through direct alteration of photosynthesis. This thesis aims to provide quantitative estimates of the magnitude of the impact of …
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Utilizing maize genomics for pre-breeding insights
… O3 on growth and development of C4 crop plants. Free Air Concentration Enrichment (FACE) field experiments were used to evaluate the response of diverse maize inbred and hybrid lines under elevated O3 concentrations ([O3]). Lines were scored for flowering phenology and ear architecture traits. A …
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Stomatal sensitivity to photosynthetic and environmental signals in glycine max grown at elevated atmospheric concentrations of CO2 and O3
Rising atmospheric concentrations of carbon dioxide (CO2) and ozone (O3) will stimulate and impair, respectively, yield and productivity of both managed and natural ecosystems in the 21st century. The ease of diffusion of these gases, as well as water vapor, between the atmosphere and interior of …
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Current and future consequences of tropospheric ozone on soybean biochemistry, physiology and yield
… crops (USDA FAS), and currently experiences O3 concentrations that are high enough to negatively impact yields. In my dissertation research I approached the problem of crop loss to O3 in three ways. Since soybean sensitivity to O3 has already been demonstrated I first tested the hypothesis that …
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Genomic and biochemical investigation of soybean antioxidant metabolism in response to growth at elevated carbon dioxide and elevated ozone
… pollutant that is predicted to increase in concentration in the future as anthropogenic precursor emissions rise. It has been hypothesized that any elevation in ozone concentration will cause increased oxidative stress in plants and therefore enhanced subsequent antioxidant metabolism, but …