Results 311 to 320 of about 628,814 (350)

Effect of Excision on Leaf Water Potential

Journal of Experimental Botany, 1984
Improvements 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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Root Pressure and Leaf Water Potential

Science, 1966
Measurements 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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Plant water relations in lychee: diurnal variations in leaf conductance and leaf water potential

Agricultural and Forest Meteorology, 1986
Abstract 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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Relation of Soybean Leaf Water Potential to Soil Water Potential¹

Agronomy Journal, 1974
AbstractEstimation of plant water potential is a possible aid in irrigation scheduling. This work examined the relation of maximum and minimum soybean (Glycine max (L.) Merr.) leaf water potential to soil water potential. Maximum readings were taken near sunrise and minimum readings were taken between 1300 and 1500 CDT.
R. A. Brady, W. L. Powers, L. R. Stone, S. M. Goltz   +3 more
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An Error in the Calibration of Xylem-water Potential against Leaf-water Potential

Journal of Experimental Botany, 1971
An 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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Variation of leaf conductance and leaf water potential in apple orchards

Journal of Horticultural Science, 1984
SummaryThe 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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Recovery of Corn Leaf Water Potential After Severe Water Stress

Agronomy Journal, 1978
AbstractThe re‐establishment of vegetative growth after a period of water stress depends on the recovery of leaf water potential after rewatering. If the time to achieve recovery can be reduced, then overall plant production can be increased. This investigation examined the rates and patterns of leaf water potential recovery in corn plants (Zea mays L.)
R. A. Nulsen, G. W. Thurtell
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Leaf Elongation in Relation to Leaf Water Potential in Soybean

Journal of Experimental Botany, 1977
Leaf water potential, turgor pressure, and leaf elongation rate were measured in soybeans grow ing in controlled environment chambers, greenhouses, and outdoors. Plants in chambers had the highest water potentials and turgor pressures, and plants outdoors the lowest.
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Isopiestic Technique: Measurement of Accurate Leaf Water Potentials

Science, 1966
Sunflower leaf tissue of known potential was obtained by equilibrating an interveinal leaf sample, at constant temperature in air, with a potential determined by sucrose solutions. Equilibration occurred within 17 hours. Except for one determination, all measurements of the water potential of the equilibrated samples with an isopiestic technique were ...
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Psychrometric Water Potential Analysis in Leaf Discs

1989
The importance of water potential (Ψ), and its components, in studies of plant-water relations is well recognized (Kramer 1983; Turner and Burch 1983). Although numerous methods are currently available for monitoring plant-water status, the use of thermocouple psychrometers for the determination of leaf Ψ under both field and laboratory conditions is ...
D. M. Oosterhuis, S. D. Wullschleger
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