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Pflanzenwachstum durch CO2/HCO3-Eintrag über die Wurzel
Authors:W. Schä  fer
Affiliation:Arbeitsgruppe für Tropische und Subtropische Agrarforschung (ATSAF), D-5300 Bonn 3
Abstract:Plant Growth after Application of CO2/HCO3 to the Roots
After applying H14CO3 to the root system of summer wheat in hermetically sealed pots, absorption and incorporation of HCO3 in the sugar-, starch-, and fibre-fraction (approximately 50 % of the absorped 14C) could be shown. This fraction reached 0.44–1.21 % of total C-assimilation of the shoot during growing stage F9/F10 on the Feeke-scala. 1/3 of the HCO3-fraction resting in the soil was bound organically indicating that microorganisms may be able to utilize exogenous anorganic CO2/HCO3 for their photosynthesis.
Keywords:Summer wheat    HCO3-Absorption    root system    photosynthetic assimilation
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