Hostname: page-component-cd9895bd7-8ctnn Total loading time: 0 Render date: 2024-12-25T06:08:58.406Z Has data issue: false hasContentIssue false
  • English
  • Français

Photosynthesis in Coffea arabica. I. Effects of Light and Temperature

Published online by Cambridge University Press:  03 October 2008

D. Kumar  and
Larry L. Tieszen
D. Kumar
Affiliation:
Coffee Research Station, Ruiru, Kenya
Larry L. Tieszen
Affiliation:
Department of Botany, University of Nairobi, Kenya
Get access Rights & Permissions [Opens in a new window]

Summary

Photosynthetic rates of coffee plants grown under the full sun and shade were compared. The saturating irradiance of 300 μE−1 m s−1 of shade plants shifted to near 600 μE in sungrown plants, but shade plants possessed substantially higher photosynthetic rates. Photosynthetic rates decreased above 25°C, which was apparently due to a decline in the mesophyll conductance, as stomatal conductance remained more or less unchanged between 25° and 35°C. Most of these measurements were made on seedlings in plastic bags. It is concluded that coffee is more suited to high density plantings where mutual shading, resulting in low light intensities and lower leaf temperatures, are likely to produce a favourable environment for efficient photosynthesis and growth.

Type
Research Article
Information
Experimental Agriculture , Volume 16 , Issue 1 , January 1980 , pp. 13 - 19
Copyright
Copyright © Cambridge University Press 1980

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Bierhuizen, J. F. & Slatyer, R. O. (1964). Aust. J. Biol. Sc. 17:348.Google Scholar
Gannell, M. G. R. (1971). PhD Thesis, Univ. Reading.Google Scholar
Hari, P. & Olavi, L. (1973). Physiol. Plant. 29:45.CrossRefGoogle Scholar
Heath, O. V. S. & Orchard, B. (1957). Nature, Lond. 180:180.CrossRefGoogle Scholar
Heath, O. V. S. & Russell, J. (1954). J. exp. Bot. 5:1.CrossRefGoogle Scholar
Khairi, M. A. & Hall, A. E. (1976). Physiol. Plant 36:35.CrossRefGoogle Scholar
Meidner, H. (1961). J. exp. Bot. 12:409.CrossRefGoogle Scholar
Nobel, P. S. (1976). Plant Physiol. 58:218.CrossRefGoogle Scholar
Nunes, M. A., Bierhuizen, J. F. & Ploegman, C. (1968). Acta Bot. Neerl. 17 (2):93.CrossRefGoogle Scholar
Nutman, J. F. (1937). Ann. Bot. (N.S.) 1:353.CrossRefGoogle Scholar
Randall, S. A., Peter, R. M. & Thorner, J. P. (1976). Plant Physiol. 58:341.Google Scholar
Tio, M. A. (1962). J. Agric. Univ. Puerto Rico 46(3):159.CrossRefGoogle Scholar
Troughton, J. H. & Slatyer, R. O. (1969). Aust. J. Biol. Sc. 22:815.CrossRefGoogle Scholar