Root Pressure in Conifers

Root Pressure in Conifers

Exudation of sap was never observed to occur from stumps of detopped seedlings of loblolly pine or white spruce, but measurable exudation occurred from apical root segments, 4 to 8 centimeters long, which were removed from the root systems and observed individually. Fully suberized root segments of...

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Veröffentlicht in:Science (American Association for the Advancement of Science) 1964-07, Vol.145 (3629), p.284-285
Hauptverfasser: O'Leary, James W., Kramer, Paul J.
Format: Artikel
Sprache:eng
Schlagworte:
Conifers
Enzymes
Exudation
Plant roots
Plants
Root pressure
Root systems
Seedlings
Water pressure
Xylem
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Beschreibung
Zusammenfassung:Exudation of sap was never observed to occur from stumps of detopped seedlings of loblolly pine or white spruce, but measurable exudation occurred from apical root segments, 4 to 8 centimeters long, which were removed from the root systems and observed individually. Fully suberized root segments of loblolly pine exuded as much or more sap than unsuberized roots. Exudation also occurred from detached sugar maple root segments, but not from stumps attached to entire root systems.
ISSN:0036-8075
1095-9203
DOI:10.1126/science.145.3629.284