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dc.contributor.authorFerguson, Justine
dc.date.accessioned2016-01-15T02:35:19Z
dc.date.available2016-01-15T02:35:19Z
dc.date.issued2015
dc.identifier.urihttps://hdl.handle.net/10182/6788
dc.description.abstractThe concentration of CO₂ in the atmosphere is rising each year and the CO₂ level may double in the next century. The rising CO₂ concentration causes an increase in carbon assimilation due to increased efficiency of photosynthesis and a reduction in photorespiration. In this experiment, the effect of elevated CO₂ was impacted by the amount of NO₃⁻ supplied to common bean and wheat. At optimal concentrations of NO₃⁻ supplied, common bean grown at elevated CO₂ concentrations had up to a 73% increase in dry matter production and an equivalent amount of total nitrogen and soluble protein in the lamina compared to common bean grown at ambient CO₂ concentrations. However, common bean grown at elevated CO₂ concentrations with low rates of NO₃⁻ supplied had an equivalent dry matter production and total nitrogen content was greatly decreased compared to those grown at ambient CO₂ concentrations. The wheat with optimal supplied NO₃⁻ concentrations at elevated CO₂ concentrations had up to a 89% increase in dry matter production, a 39% increase in lamina total nitrogen and an equivalent total amount of soluble protein in the lamina compared to wheat grown at ambient CO₂ concentrations. With low NO₃⁻ supplied, the wheat grown at elevated CO₂ concentration had equivalent dry matter production and total nitrogen content to the wheat grown at ambient CO₂ concentrations. These results show the importance of nitrogen availability on the performance of plants under elevated CO₂ conditions.en
dc.language.isoenen
dc.publisherLincoln Universityen
dc.rights.urihttps://researcharchive.lincoln.ac.nz/page/rights
dc.subjectcarbon dioxideen
dc.subjectCO2 elevated concentrationen
dc.subjectcommon beanen
dc.subjectwheaten
dc.subjectNitrogenen
dc.subjectnitrateen
dc.subjectdry matter productionen
dc.subjectlegumesen
dc.titleThe effect of elevated CO₂ concentration on growth and NO₃⁻ assimilation of Phaseolus vulgaris and Triticum aestivumen
dc.typeDissertationen
thesis.degree.nameBachelor of Science (Honours)en
lu.thesis.supervisorMorton, Jim
lu.contributor.unitDepartment of Wine, Food and Molecular Biosciencesen
dc.subject.anzsrc070304 Crop and Pasture Biomass and Bioproductsen
dc.subject.anzsrc0607 Plant Biologyen


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