Physiologia Plantarum · 1984 · 37 citations · 34 references
Life SciencesPlant BiologyPlant SciencesCrop PhysiologyPlant EcophysiologyPlant PhysiologyDroughtDrought PhysiologyDrought Stress PhysiologyDrought ToleranceStress BiochemistryWater RelationsDrought StressDrought Stress EffectsDrought Tolerance MechanismsMoisture ReleaseOsmotic Pressure AdjustmentRelative Water ContentWater Stress PhysiologyWater Stress Tolerance
The capacity of apple ( Malus pumila Mill. cv. James Grieve and Golden Delicious) pot‐ and orchard‐grown trees to adjust osmotically in response to drought was investigated. Stressed leaves exhibited alterations in the moisture release curves when compared to well hydrated control leaves. Results suggest that osmotic adjustment occurred in both field‐ and pot‐grown trees. Water potential for zero turgor was lowered by 0.5 MPa in leaves of potted trees and by 1.1 MPa in leaves of field‐grown trees as a result of stress treatments. A decrease in the osmotic potential was responsible for that adjustment allowing the leaf to maintain turgor at lower water potentials and relative water contents. The extent of adjustment was similar for both potted and orchard trees despite the difference in the rate of stress imposition and its intensity. Changes in the concentration of sugars apparently contributed to this adjustment.
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Sap Pressure in Vascular Plants
P. F. Scholander, Edda D. Bradstreet, Edvard A. Hemmingsen et al. · Science · 1965 · 4.5K citations
Encyclopedia of plant physiology, New series
J.B. Harbörne · Phytochemistry · 1978 · 2K citations