Determination of Moisture Content of Expressed Plant Tissue Fluids

Effects of the Physical Environment on the Physico-Chemical Properties of Plant Saps, and the Relation of These Properties to Leaf Temperature

“…According to GORTNER (20), HARRIS observed a slightly greater depression than this in the sap of A. confertifolia. It is obvious that the salt concentration of soil in which plants naturally grow is of great physiological and ecological importance.…”

“…KORSTIAN (35), REED (51), GAIL (17), HARRIS and co-workers (20), and others have shown that soil moisture has an obvious effect upon cellsap concentration. The addition of water to the soil -usually diminished the concentration of the plant sap.…”

“…Literature review That physico-chemical properties of cell sap in plants are receiving much attention among scientific investigators is evidenced by the volume of literature appearing on this subject. Among the contributions are some excellent and comprehensive reviews (20,35,41,45). It will therefore be unnecessary here to do more than develop a general view-point of the problem, including only those aspects which have been touched upon in this investigation.…”

“…MEYER (41), GORTNER (20), and SAYRE and MORRIS (53) have given a comprehensive review of the methods employed in the extraction of plant saps.…”

“…HARRIS and co-workers (26, 20) and many others have made extensive use of the method of depression of the freezing point in studies of plant 'This investigation was begun at the University of Illinois, and continued at Duke University.…”