Results 31 to 40 of about 172,267 (159)

The Relationship between Transpiration, Root Water Uptake, and Leaf Water Potential

open access: yesJournal of Experimental Botany, 1979
The effect of changing the transpiration rate on leaf water potential and water balance has been examined to show if permeability of the plant (predominantly the roots) is constant or varies with the transpiration rate. Measurements of leaf effective thickness, water potential, transpiration, and uptake of water by roots were made on sunflower, barley,
Aston, M. J., Lawlor, D. W.
openaire   +1 more source

Study on the reasonable water supply in NFT tomato culture system based on leaf water potential

open access: yes浙江大学学报. 农业与生命科学版, 2006
Taking the Shengnv cherry tomato as the research material, the daily variation of leaf water potential (LWP) in tomato plant were investigated under different irrigating circumstances with NFT culture system.
XU Lin-juan   +4 more
doaj   +1 more source

Chitosan Improves Morphological and Physiological Attributes of Grapevines Under Deficit Irrigation Conditions

open access: yesJournal of Horticultural Research, 2021
This study aimed to estimate the morphological and physiological effects of chitosan foliar spray and/or three irrigation levels of 100%, 60%, and 40% of field capacity on grapevines grown in plastic containers to simulate water shortage conditions.
Khalil Hoda Ali, Badr Eldin Rasha M.
doaj   +1 more source

Leaf Water Potentials Measured with a Pressure Chamber [PDF]

open access: yesPlant Physiology, 1967
Leaf water potentials were estimated from the sum of the balancing pressure measured with a pressure chamber and the osmotic potential of the xylem sap in leafy shoots or leaves. When leaf water potentials in yew, rhododendron, and sunflower were compared with those measured with a thermocouple psychrometer known to indicate accurate values of leaf ...
openaire   +2 more sources

Impact of soil water potential pattern on root water uptake distribution and leaf water potential

open access: yes, 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 ...
Mehmandoostkotlar, Ali   +2 more
openaire   +2 more sources

Chloroplast Response to Low Leaf Water Potentials [PDF]

open access: yesPlant Physiology, 1976
Quantum yields were measured for CO(2) fixation by sunflower (Helianthus annuus L.) leaves having various water potentials and for dichlorophenolindophenol photoreduction by chloroplasts isolated from similar leaves having various water potentials.
P, Mohanty, J S, Boyer
openaire   +2 more sources

Water relations of woody perennial plant species

open access: yesOENO One, 2007
Aims: To describe the relation of various water status measures of woody perennial plants (predawn and midday stem and leaf water potential), to indices of physiological activity such as leaf conductance, vegetative growth and fruit growth and ...
Kenneth A. Shackel
doaj   +1 more source

Drought-Adaptive Mechanisms of Young Sweet Cherry Trees in Response to Withholding and Resuming Irrigation Cycles

open access: yesAgronomy, 2021
The present work evaluates the main adaptive mechanisms developed by young sweet cherry trees (Prunus avium L.) to cope with drought. For this purpose, the young trees were subjected to two drought cycles with different water stress intensities followed ...
Pedro José Blaya-Ros   +3 more
doaj   +1 more source

Water potential characteristics and yield of summer maize in different planting patterns

open access: yesPlant, Soil and Environment, 2008
A study was conducted in the Shandong province in North China to investigate the effects of different planting patterns on water potential characteristics of soil-plant-atmosphere continuum (SPAC) and yield of summer maize.
L. Quanqi   +5 more
doaj   +1 more source

Modeling Stem Water Potential by Separating the Effects of Soil Water Availability and Climatic Conditions on Water Status in Grapevine (Vitis vinifera L.)

open access: yesFrontiers in Plant Science, 2019
Measuring seasonal plant water status is critical in choosing appropriate management strategies to ensure yields and quality of agricultural products, particularly in a context of climate change. Water status of grapevines is known to be a key factor for
Bruno Suter   +5 more
doaj   +1 more source

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