Master of Science (MS)
First Committee Member
Paul J. Schulte
Number of Pages
Chilopsis linearis, a facultative phreatophyte, is a shrub that is common along washes in arid environments like the Mojave Desert. In addition to adaptive drought tolerant and drought avoidance mechanisms, internal anatomical and developmental characteristics such as vessel diameter, number of vessels produced and the season of the year they are produced affect the conducting ability of xylem to transport water to the leaves. Xylem conductance measurements indicated that no more than half of the vessels in C. linearis are conducting in either a dry year (1994) or a wet year (1995). This was likely due to the obstruction of some xylem conduits by emboli (air bubbles) as a result of possible stress. The loss of functioning vessels by embolism is balanced by the production of new vessels throughout the growing season, thus maintaining the conducting ability of the plant stem.
Ability; Chilopsis; Conducting; Desert; Linearis; Seasonal; Shrub; Xylem
University of Nevada, Las Vegas
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Dudek, Judith Michele, "Seasonal xylem-conducting ability in the desert shrub Chilopsis linearis" (1997). UNLV Retrospective Theses & Dissertations. 3362.