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 10 of 10 for “"carbon isotope discrimination"”.
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Water-use efficiency, photosynthetic characteristics, and high through-put phenotyping methods for soybean (glycine max) genotypes contrasting in carbon isotope discrimination
… is for plants to use water more efficiently. Carbon isotope discrimination (CID) is a measured trait that is related to water-use efficiency (WUE), and can be used to screen genotypes for higher WUE. Several genotypes were studied in multiple greenhouse and field experiments with varying …
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The long-term effect of elevated CO₂ on grassland biomass production
… have an effect on plant wateruse efficiency) and carbon isotope discrimination values were determined at the three sites. The results show that elevated CO₂ had a significant effect on the monocotyledenous dry matter production, but had no significant effect on any of the other plants or soil. It …
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Management intensity effects on growth and physiological responses of loblolly pine varieties and families growing in the Virginia Piedmont and North Carolina Coastal Plain of the United States
… stand uniformity, photosynthetic rate (Asat), carbon isotope discrimination (∆¹³) and lower fascicle size than the OP family. None of the traits assessed inthis study was consistent within the ideotypes. Varieties classified in the same crown-ideotypes may respond differently to the …
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Physiology, genetics and genomics of drought adaptation in Populus
… showed differences in stomatal conductance and carbon isotope composition in both clones and the F2 progeny. It was also used to discover QTL related to water use efficiency highlighting interesting areas of the genome. Combining QTL discovery and microarray analysis of the two clones in …
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High Throughput Phenotypic Evaluation of Drought-related Traits in Soybean
… evaluated by aerial infrared image analysis, carbon isotope discrimination (Δ13C) and oxygen isotope composition (δ18O). Five fast-and five slow-wilting genotypes derived from a cross of Benning × PI416937 were evaluated under three water treatments that included a full and two …
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Characterising natural genetic variation in dynamic photosynthesis and photoprotection in sorghum
… on the coordination between the C<sub>4</sub> carbon concentrating mechanism and Calvin-Benson-Bassham cycle CO<sub>2</sub> fixation. Imbalances between these cycles during stress conditions likely represent a loss of photosynthetic efficiency in the field, potentially resulting in decreased …
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Energetics of maize C4 physiology under light limiting conditions
C4 plants have a biochemical carbon concentrating mechanism (CCM) that increases CO2 concentration around Rubisco in the bundle sheath (BS). Maize CCM has two CO2 delivery pathways to the Bundle Sheath (BS) (respectively via malate, MAL or aspartate, ASP); rates of PGA reduction, carbohydrate …
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Photosynthesis and transpiration in a dry-land Pinus radiata forest
… explain a seasonal pattern in stable carbon isotope composition (δ¹³C) measured within annual rings of P. radiata from two sites which differed markedly in annual water balance. Over two growing seasons there was good agreement between mean canopy-level cᵢ derived from the tree-ring …
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Physiological and molecular determinants of the Chlamydomonas reinhardtii pyrenoid
… of land plants, the hornworts, have an inducible carbon concentrating mechanism (CCM), to overcome these limitations. The efficiency of the CCM is improved when RuBisCO is localised to a subcellular compartment, the pyrenoid, which is hypothesised to act as a diffusion barrier for CO2 . Although …
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Evaluation of physiological traits and identification of QTLs for drought tolerance in hexaploid wheat (Triticum aestivum L.).
… water soluble carbohydrates (WSC) and carbon isotope discrimination (Δ¹ ³C) were measured during experiments. Through these experiments, the drought responses of the three cultivars were physiologically dissected and the likely processes contributing most to drought tolerance were …