Abstract
A good agreement was found between drought induced water-use efficiencies and carbon isotope fractionation of potato plants of the same age. Discrimination of13Carbon isotope increased with plant age and with the rank order of the distinguished plant organs. In young plants, nematode infection (contrary to drought) reduced13C discrimination but also reduced the water-use efficiency, leading to the conclusion that nematode infection, by slowing down the plant metabolism may have reduced the extrusion of13C. Towards senescence both nematode infection and drought reduced13C discrimination and increased water-use efficiencies indicating that then nematode caused water stress in the plants.
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Haverkort, A.J., Valkenburg, G.W. The influence of cyst nematodes and drought on potato growth. 3. Effects on carbon isotope fractionation. Netherlands Journal of Plant Pathology 98, 12–20 (1992). https://doi.org/10.1007/BF01998074
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DOI: https://doi.org/10.1007/BF01998074