Photosynthesis, transpiration and leaf diffusive conductance of Cassava in response to water stress

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Abstract

The effects of short periods of water shortage on the CO2 and water vapour exchange of attached cassava (Manihot esculenta Crantz 'M Col 72') leaves were measured. Gas-exchange and leaf water potential measurements were made in outdoor grown plants previously subjected to varying periods without water. Leaf water potentials fell to between −0.61 and −1.06 MPa and net photosynthesis and transpiration rates declined as leaf water potential decreased. Estimations of the leaf internal CO2 conductance indicated that the linear relationship established between leaf water potential and net photosynthesis is dominated by, but not completely explained by, stomatal closure.
Original languageEnglish
Pages (from-to)373-376
JournalCanadian Journal of Botany
Volume61
Issue number1
DOIs
Publication statusPublished - 1983
Externally publishedYes

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