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Biomass production and nitrogen contents of the CAM plants "Kalanchoe daigremontiana" and "K. tubiflora" in cultures with different nitrogen and water supply

Title data

Widmann, K. ; Gebauer, Gerhard ; Rehder, H. ; Ziegler, H.:
Biomass production and nitrogen contents of the CAM plants "Kalanchoe daigremontiana" and "K. tubiflora" in cultures with different nitrogen and water supply.
In: Oecologia. Vol. 82 (April 1990) Issue 4 . - pp. 478-483.
ISSN 1432-1939
DOI: https://doi.org/10.1007/BF00319789

Abstract in another language

Two CAM plant species (Kalanchoe daigremontiana and K. tubiflora) were cultivated in pure cultures with two different levels of nitrogen and water supply. A comparison of the plant dry weight showed that the productivity was severely reduced under low nitrogen or/and water conditions. Additionally the proportion of the different organs contributing to the total biomass, and thus the ratio of root/shoot dry weight shifted substantially. At the same time the production of leaf buds in ratio to leaf biomass was increased. Concentrations of organic nitrogen and nitrate in the shoots were drastically reduced under low nitrogen or/and water conditions, but organic nitrogen concentration in the roots remained relatively high. The leaf conductance over a day was investigated only for K. daigremontiana, and decreased with reduced water and nitrogen supply. The results indicate that CAM plants do not have the predicted high nitrogen use efficiency. Under environmental stress they change from biomass production towards provisions for life preservation.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER25963
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology > Former Professors
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology > Former Professors > Chair Plant Ecology - Univ.-Prof. John D. Tenhunen, Ph.D.
Research Institutions > Research Centres > Bayreuth Center of Ecology and Environmental Research- BayCEER
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology
Research Institutions
Research Institutions > Research Centres
Result of work at the UBT: Yes
DDC Subjects: 500 Science
Date Deposited: 20 Nov 2015 07:29
Last Modified: 20 Nov 2015 07:29
URI: https://eref.uni-bayreuth.de/id/eprint/22921