Growth rates of Corallina officinalis (Rhodophyta) at different temperatures (original) (raw)
Abstract
Specimens of Corallina officinalis L. were grown in the laboratory for 6 and 8 weeks at temperatures of 6°, 12°, 18°, and 25°C. After 6 weeks, the mean growth rates of main axes were 2.8 mm at 18°C, 2.9 mm at 12°C, and 0.2 mm at 5°C; no growth occurred at 25°C. At 6°C, growth increased with lower light intensities. The mean total increase in length of branchlets present when the plants were collected did not vary significantly at 12° and 18°C. At 12°C, axial intergenicula formed in culture produced more new branchlets than did field-grown intergenicula. Also, the production of these branchlets on cultured intergenicula was higher at 12°C than at 18°C.
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Author notes
- B. J. Colthart
Present address: Cornell University, Plant Science Building, 14850, Ithaca, New York, USA
Authors and Affiliations
- Department of Biology, Clark University, Worcester, Massachusetts, USA
B. J. Colthart & H. W. Johansen
Authors
- B. J. Colthart
- H. W. Johansen
Additional information
Communicated by J. Bunt, Miami
Based on a dissertation completed at Clark University in partial fulfillment of the requirements for a Master of Arts degree by B. J. Colthart.
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Colthart, B.J., Johansen, H.W. Growth rates of Corallina officinalis (Rhodophyta) at different temperatures.Marine Biology 18, 46–49 (1973). https://doi.org/10.1007/BF00347919
- Accepted: 04 September 1972
- Issue date: January 1973
- DOI: https://doi.org/10.1007/BF00347919