biologia plantarum

International journal on Plant Life established by Bohumil Němec in 1959

Biologia plantarum 24:57, 1982 | DOI: 10.1007/BF02898486

Ribulose-1, 5-bisphosphate carboxylase activity, chlorophyll and protein concentrations in differentPopulus clones

R. Ceulemans1, F. Van Assche2, I. Impens1, H. Clusters2
1 Department of Biology, University of Antwerp, UIA, Wilrijk, Belgium
2 Department SBM, University Center of Limburg, LUC, Diepenbeek-Hasselt, Belgium

Ribulose-1,5-bisphosphate carboxylase activity (RuBPC), chlorophyll (chl) and protein (prot) concentrations and chlorophyll/protein (chl/prot) ratios were determined in five differentPopulus clones together with their maximal net CO2 uptake rates (Pmax). A classic reference clone (Populus ×euramericana "Robusta" (Dode) Guinier) was compared with four recently selected euramerican and interamerican crossings. Chl/prot ratio and RuBPC activity varied among the different clones, while chl a/chlb ratio showed only a very low coefficient of variation (1.7%) for the five clones. Poplar clone "Robusta" could be distinguished from the recent faster growing clones based on the different biochemical characteristics. A significant correlation was found between both total chl concentration and chl/prot ratio with Pmax for the five clones.

Keywords: chlorophylla, chlorophyllb ratio; Populus trichocarpa ×Populus deltoides; net CO2 exchange rate

Received: May 4, 1981; Accepted: June 2, 1981; Published: January 1, 1982  Show citation

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Ceulemans, R., Van Assche, F., Impens, I., & Clusters, H. (1982). Ribulose-1, 5-bisphosphate carboxylase activity, chlorophyll and protein concentrations in differentPopulus clones. Biologia plantarum, 24(1), 57. doi: 10.1007/BF02898486
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