Results 21 to 30 of about 628,814 (350)

Acclimation of Photosynthesis to Low Leaf Water Potentials [PDF]

open access: yesPlant Physiology, 1984
Photosynthesis is reduced at low leaf water potentials (Psi(l)) but repeated water deficits can decrease this reduction, resulting in photosynthetic acclimation. The contribution of the stomata and the chloroplasts to this acclimation is unknown. We evaluated stomatal and chloroplast contributions when soil-grown sunflower (Helianthus annuus L.) plants
M A, Matthews, J S, Boyer
openaire   +2 more sources

Differential water-use efficiency and growth among Eucalyptus grandis hybrids under two different rainfall conditions

open access: yesForest Systems, 2020
Aim of the study: To analyze the course of leaf water status, water-use efficiency and growth in Eucalyptus grandis and hybrids throughout seasons with different rainfall. Area of study: The study was conducted in northern Uruguay.
José Gándara   +6 more
doaj   +1 more source

Hydraulic trade-off and coordination strategies mediated by leaf functional traits of desert shrubs

open access: yesFrontiers in Plant Science, 2022
Desert shrubs play important roles in desertification control and vegetation restoration, which are particularly affected by droughts caused by climate change. However, the hydraulic strategies associated with hydraulic functional traits of desert shrubs
Jianqiang Huo   +9 more
doaj   +1 more source

Hydrogen sulfide, potassium phosphite and zinc sulfate as alleviators of drought stress in sunflower plants [PDF]

open access: yesCiência e Agrotecnologia, 2020
Drought is the most harmful environmental factor crop productivity. Some chemicals are used in agriculture to mitigate the damage from this stress on plants. Therefore, we examined whether the spraying of zinc sulfate (ZS), potassium phosphite (KPhi) and
Gabriel Martins Almeida   +5 more
doaj   +1 more source

Leaf water potential and leaf extension in a sudax crop [PDF]

open access: yesNew Zealand Journal of Agricultural Research, 1977
Abstract Leaf water potentials were measured on leaves at three canopy heights in dryland and irrigated sudax plots. Leaf water potentials of basal tillers ranged from -2 to -5 bars and those of upper leaves on the main stem fell to -13 bars during the daytime. Mid-canopy leaf water potential ranged from -4 to -7 bars.
A. C. P. Chu, J. P. Kerr
openaire   +1 more source

Robusta coffee transpiration rate in smallholder coffee plantations on Inceptisols of Malang, East Java

open access: yesJournal of Degraded and Mining Lands Management, 2021
Climate change and the erratic and uneven rainfall distribution are the causes of reduced water available in the soil for plant needs to the transpiration process.
Jiyanti Yana Saputri   +2 more
doaj   +1 more source

Comparisons of Leaf Water Potential and Xylem Water Potential in tomato Plants [PDF]

open access: yesAustralian Journal of Biological Sciences, 1970
The rapidity and convenience of the pressure chamber technique for estimating leaf water potentials, especially under field conditions, has been remarked (Boyer 1967; Kaufmann 1968a, 1968b) and demonstrated (Klepper and Ceccato 1969). However, Kaufmann (1968a) showed that it is necessary to exercise caution .in using measurements made with the pressure
HD Barrs   +3 more
openaire   +1 more source

Vine water deficit : among the 3 applications of pressure chamber, stem water potential is the most sensitive indicator

open access: yesOENO One, 2000
Vine water status is an important factor in grape quality. High tannin and anthocyanin content in red grape berries are related to moderate vine water deficits.
Xavier Choné   +3 more
doaj   +1 more source

Fruit and Leaf Sensing for Continuous Detection of Nectarine Water Status [PDF]

open access: yes, 2019
Continuous assessment of plant water status indicators might provide the most precise information for irrigation management and automation, as plants represent an interface between soil and atmosphere.
Lo Bianco, Riccardo   +3 more
core   +1 more source

Physiological drought responses improve predictions of live fuel moisture dynamics in a Mediterranean forest. [PDF]

open access: yes, 2018
The moisture content of live fuels is an important determinant of forest flammability. Current approaches for modelling live fuel moisture content typically focus on the use of drought indices.
Arteaga López, Carles   +4 more
core   +2 more sources

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