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- 3Xylem cavitation
- 1Basal angiosperm physiology
- 1Bordered pit
- 1Ecological wood anatomy
- 1Embolism resistance
- 1Functional wood anatomy
• While tracheid size of conifers is often a good proxy of water transport efficiency, correlations between conifer wood structure and transport safety remain poorly understood. It is hypothesized that at least some of the variation in bordered pit and tracheid structure is associated with both...
Evaluation of centrifugal methods for measuring xylem cavitation in conifers, diffuse and ringporous angiospermsDownload
• A centrifugal method is used to measure ‘vulnerability curves’ which show the loss of hydraulic conductivity in xylem by cavitation. Until recently, conductivity was measured between bouts of centrifugation using a gravity-induced head. Now, conductivity can be measured during centrifugation....
We tested two hypotheses for how vessel evolution in angiosperms influenced xylem function. First, the transition to vessels decreased resistance to flow-often considered the driving force for their evolution. Second, the transition to vessels compromised safety from cavitation-a constraint...