Water-Stress and Leaf Growth in Field-grown Crops of Potato (Solanum tuberosum L.)

The appearance and growth of individual leaves were examined in crops of potato (Solanum tuberosum L.) grown either fully irrigated or droughted from plant emergence. The rate of appearance of leaves was increased and the duration of growth decreased in leaves of the droughted crop in 1986 but not i...

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Bibliographic Details
Published in:Journal of experimental botany 1989-12, Vol.40 (12), p.1375-1381
Main Author: JEFFERIES, R. A.
Format: Article
Language:English
Subjects:
Agronomy. Soil science and plant productions
Biological and medical sciences
Deficit irrigation
Drought
Economic plant physiology
Fundamental and applied biological sciences. Psychology
Irrigation
leaf appearance
leaf growth
Leaves
Plant growth
Plant physiology and development
Plants
Soil water
Soil water deficit
Solanum tuberosum
Statistical variance
Vegetation canopies
Water and solutes. Absorption, translocation and permeability
Water relations, transpiration, stomata
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Summary:The appearance and growth of individual leaves were examined in crops of potato (Solanum tuberosum L.) grown either fully irrigated or droughted from plant emergence. The rate of appearance of leaves was increased and the duration of growth decreased in leaves of the droughted crop in 1986 but not in 1987. In droughted crops, leaf growth rate was correlated with afternoon measurements of leaf water potential (ψ1) and turgor (P), being reduced in comparison with that in irrigated crops when ψ1 and P were less than −0.28 and 0.5 MPa respectively. Leaf growth was highly correlated to soil moisture deficit (SMD) and declined rapidly when the SMD was greater than 16 mm.
ISSN:0022-0957
1460-2431
DOI:10.1093/jxb/40.12.1375