%0 Journal Article %1 CorderoNilsen_02 %A Cordero, R. A. %A Nilsen, E. T. %D 2002 %J Tree Physiology %K bibtex-import, citeulikeExport dependance, diameter, droughtbolism, embolism, evergreen, freezebolism, freezing, papercopy, shrubs, snowgumpapermaybe, temperature %P 919--928 %T Effects of summer drought and winter freezing on stem hydraulic conductivity of Rhododendron species from contrasting climates %U http://www.fsl.orst.edu/\~bond/fs561/references/22-919.pdf %V 22

@article{CorderoNilsen_02, added-at = {2019-03-31T01:14:40.000+0100}, author = {Cordero, R. A. and Nilsen, E. T.}, biburl = {https://www.bibsonomy.org/bibtex/25e586d15f639680ec549543401618839/dianella}, citeulike-article-id = {1523656}, citeulike-linkout-0 = {http://www.fsl.orst.edu/\~{}bond/fs561/references/22-919.pdf}, comment = {(private-note)f/f = fast freeze, fast thaw 25oC h-1 s/s = slow freeze, slow thaw: 6oC h-1 frozen to -10, where it stayed for at least 60 minutes additional treatment: water source was left attached during the thawing period of the f/f treatment (f/f/w) the percentage contribution of each diameter class to total stem hydraulic conductivity was calculated as a proportion of the sum of the fourth power of all radii( sumr4) maximum vessel lengths were determined Vessel diameters were tested by analysis of variance and a post hoc scheffe test was used to compare means There was little evidence for significant seasonal variation in stemm freezing point temperatures in any of the species. **f/f/w treatment reduced PLC. The species that came from the habitat with more frequent freeze-thaw events had smaller vessels. Very variable response to freeze/thaw treatment, though, so diameter didn't come out to be most important. In fact, was the most vulnerable. Shady environments produced plants with narrower vessels in R. macrophyllum In high light R. catawbiense tended to have lower stem freezing points (-4.6 versus -1.4oC) The PLC of plants in the intermediate treatments F/S and S/F did not differ from that of plants in the extreme treatments in either R. maximum or R. macrophyllum however the F/F treatment increased mean PLC significantly compared with the control treatment (S/S) in all three species. R. macrophyllum had the seasonal drought habitat, and the largest vessel diameters, so drought induced embolism is unrelated to vessel size. Refilling less common in this species, it seems, though. The studied spp had mean vessel diameters less than 30um comparison of freeze/thaw methods with Davis et al. 1999 and Pockman and Sperry}, interhash = {0392efacfe438c46fce96f1966bed036}, intrahash = {5e586d15f639680ec549543401618839}, journal = {Tree Physiology}, keywords = {bibtex-import, citeulikeExport dependance, diameter, droughtbolism, embolism, evergreen, freezebolism, freezing, papercopy, shrubs, snowgumpapermaybe, temperature}, pages = {919--928}, posted-at = {2007-07-31 06:12:43}, priority = {0}, timestamp = {2019-03-31T01:16:26.000+0100}, title = {{Effects of summer drought and winter freezing on stem hydraulic conductivity of Rhododendron species from contrasting climates}}, url = {http://www.fsl.orst.edu/\~{}bond/fs561/references/22-919.pdf}, volume = 22, year = 2002 }