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Proceedings chapter
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Magnesium deficiency in sugar beet probed by optical measurements in vivo

Published inPS2001 proceedings, p. S28-015
Presented at 12th International Congress on Photosynthesis, Brisbane, 2001
PublisherCollingwood : CSIRO Publishing
Publication date2001
Abstract

To detect the stress state of sugar beet suffering magnesium restriction, three stages of development were studied. Leaf reflectance and solvent extraction were used to analyse the pigments. Chlorophyll fluorescence monitoring has been carried out with direct and modulated techniques. Although Mg is the atom in the centre of the chlorophyll molecule, its deficiency becomes apparent in the plant at several levels (such as electron transport and non-light dependent rate constants) before the chlorophyll content. Distinct depressions in chlorophyll concentration parallels interveinal chlorosis toward the distal end of the recently mature leaves. Therefore, the fluorescence transient is a potential biosensor that monitors photosynthetic activities for basic, agricultural and ecological projects.

eng
Keywords
  • Chlorophyll fluorescence
  • Performance index
  • Leaf reflectance
  • Magnesium status
Citation (ISO format)
HERMANS, Christian Roger, DELHAYE, Jean-Paul, STRASSER, Reto. Magnesium deficiency in sugar beet probed by optical measurements <i>in vivo</i>. In: PS2001 proceedings. Brisbane. Collingwood : CSIRO Publishing, 2001. p. S28–015.
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Proceedings chapter (Published version)
accessLevelPublic
Identifiers
  • PID : unige:171803
ISBN0643067116
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