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Agricultural Water Management, 2019
Water potential is considered to be the “gold-standard” measure for plant water status determination. However, there are some discrepancies on how and at what time of the day water potential measurements should be performed in order to obtain meaningful ...
L. Santesteban +18 more
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Water potential is considered to be the “gold-standard” measure for plant water status determination. However, there are some discrepancies on how and at what time of the day water potential measurements should be performed in order to obtain meaningful ...
L. Santesteban +18 more
semanticscholar +1 more source
An Error in the Calibration of Xylem-water Potential against Leaf-water Potential
Journal of Experimental Botany, 1971An error occurs in the calibration of xylem pressure potential (Ta;) against leaf-water potential (Tir) when the calibration is made using plant material in which the water stress has been induced artificially after excision. The imposition of water stress after excision affects the T'a: determination more than it affects Tw, consequently the ...
D. W. WEST, D. F. GAFF
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Root Pressure and Leaf Water Potential
Science, 1966Measurements with thermocouple psychrometers were made of the water potentials of leaves from sunflower and pepper plants which had stood overnight in the dark in nutrient solutions containing carbowax. Similar measurements on the solutions showed that they had lower water potentials than the leaves, although the plants were measurably transpiring ...
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Effect of Excision on Leaf Water Potential
Journal of Experimental Botany, 1984Improvements of thermocouple hygrometrie techniques for in situ leaf water potential measurement in the field now allows for continuous monitoring of water potential in response to an external perturbation, such as leaf excision. Using Citrus jambhiri plants, measured leaf water potentials of completely excised leaf portions immediately increased when ...
M. J. SAVAGE, A. CASS, H. H. WIEBE
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Impact of soil water potential pattern on root water uptake distribution and leaf water potential
2021<p>Root water uptake is a major process controlling water balance and accounts for about 60% of global terrestrial evapotranspiration. The root system employs different strategies to better exploit available soil water, however, the regulation of water uptake under the spatiotemporal heterogeneous and uneven distribution of soil water is ...
Ali Mehmandoost Kotlar, Mathieu Javaux
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Variation of leaf conductance and leaf water potential in apple orchards
Journal of Horticultural Science, 1984SummaryThe major random and non-random sources of variation in leaf conductance (g1) and leaf water potential (ψ1) in apple trees were determined from many separate experiments. The variances of both g1 and ψ1 were only weakly dependent on the mean value.
H. G. Jones, I. G. Cumming
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Transpiration and leaf water potentials of wheat in relation to changing soil water potential
Australian Journal of Agricultural Research, 1977Changes in the transpiration rate of wheat in drying soils were followed in experiments in which plants were grown in two small weighable lysimeters in a glasshouse. Hourly measurements of soil water potential (?s) were made at three depths in each lysimeter.
KA Seaton, JJ Landsberg, RH Sedgley
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Plant water relations in lychee: diurnal variations in leaf conductance and leaf water potential
Agricultural and Forest Meteorology, 1986Abstract Diurnal variations in leaf conductance and leaf water potential were investigated in 6-year-old lychee trees (Litchi chinensis sonn. cv. Bengal) during the dry season in subtropical Queensland, Australia. Leaf conductance and leaf water potential fell from 0.56 mol m−2 s−1 and -0.1 MPa in the morning to 0.08 mol m−2 s−1 and -1.0 MPa ...
C.M Menzel, D.R Simpson
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Relationships of leaf diffusion resistance of Populus clones to leaf water potential and environment
Oecologia, 1979Leaf diffusion resistance (r 1) of the upper and lower leaf surfaces of several Populus clones was related to leaf water potential (ψ1), light intensity, vapor pressure deficit (VPD), and temperature by intrinsicallylinear, logarithmic multiple regression analyses. Regression equations accounted for up to 80% of variation in r 1 data.
S G, Pallardy, T T, Kozlowski
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The Components of Leaf Water Potential I. Osmotic and Matric Potentials
Australian Journal of Biological Sciences, 1967Osmotic potential ('IT) resulting from solutes should be distinguished from matric potential (T) resulting from adsorption by the tissue matrix. The usual methods of measuring so·called "osmotic potential" actually give not only 'IT but also part or all of T.
J Warren Wilson, CW Rose
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