Carbon-13 Discrimination Analysis
Carbon-13 Discrimination Analysis quantifies the degree to which C3 plants preferentially fix the lighter carbon isotope (12C) over the heavier 13C during photosynthesis. The resulting discrimination value (Delta) is closely linked to the ratio of internal to ambient CO2 concentration, making it a reliable, integrative proxy for intrinsic water-use efficiency across the growing season. The technique is widely used in agronomy, plant physiology, and crop breeding.
Source record
Citations copied verbatim from the method’s source record. No claim-level verification is inferred from them.
- Farquhar, G. D., Ehleringer, J. R., & Hubick, K. T. (1989). Carbon isotope discrimination and photosynthesis. Annual Review of Plant Physiology and Plant Molecular Biology, 40, 503–537. · DOI 10.1146/annurev.pp.40.060189.002443
- Condon, A. G., Richards, R. A., Rebetzke, G. J., & Farquhar, G. D. (2004). Breeding for high water-use efficiency. Journal of Experimental Botany, 55(407), 2447–2460. · DOI 10.1093/jxb/erh277
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Related methods
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