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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Photosynthesis in coffea arabica. II. Effects of water stress
Experimental Agriculture, Volume 16, No. 1, Year 1980
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Description
Experiments were carried out to relate soil moisture to leaf water potential (Ψ1), and to determine the effects of varying Ψ1, on leaf conductances and photosynthesis in coffee. Stomatal conductance was maximum at 0900 h, but plants growing in drier soil showed marked mid-day stomatal closure. After 1500 h, stomata began closing although plant water status improved. Photosynthesis in relation to changing Ψ1 appeared to exhibit roughly three different rates. At the fixed experimental temperature (25°C) low Ψ1 reduced photosynthesis throughits influence on stomata, but under field conditions low Ψ1 and an accompanying rise in temperature could lower the rate by lowering both mesophyll and stomatal conductances. © 1980, Cambridge University Press. All rights reserved.
Authors & Co-Authors
Kumar, D.
Kenya
Coffee Research Station
Tieszen, Larry L.
Kenya, Nairobi
University of Nairobi
Statistics
Citations: 36
Authors: 2
Affiliations: 2
Identifiers
Doi:
10.1017/S0014479700010668
ISSN:
00144797
e-ISSN:
14694441
Research Areas
Environmental