Improved precision of hydraulic conductance measurements using a Cochard rotor in two different centrifuges
| hal.structure.identifier | University Yangling | |
| dc.contributor.author | WANG, Yujie | |
| hal.structure.identifier | Biodiversité, Gènes & Communautés [BioGeCo] | |
| dc.contributor.author | BURLETT, Régis | |
| hal.structure.identifier | University Yangling | |
| dc.contributor.author | FENG, Feng | |
| hal.structure.identifier | University Yangling | |
| dc.contributor.author | TYREE, Melvin T. | |
| dc.date.accessioned | 2022-10-12T13:08:23Z | |
| dc.date.available | 2022-10-12T13:08:23Z | |
| dc.date.issued | 2014 | |
| dc.identifier.issn | 2426-413X | |
| dc.identifier.uri | https://oskar-bordeaux.fr/handle/20.500.12278/157713 | |
| dc.description.abstractEn | An improved way of calculating hydraulic conductance (K) in a Cochard Cavitron is described. Usually K is determined by measuring how fast water levels equilibrate between two reservoirs while a stem spins in a centrifuge. A regression of log meniscus position versus time was used to calculate K and this regression method was compared to the old technique that takes the average of discrete values. Results of a hybrid Populus 84K shows that the relative error of the new approach is significantly lower than the old technique by 4~5 times. The new computational method results in a relative error less than 0.5% or 0.3% from 8 or 12 points of measurement, respectively. The improved precision of K measurement also requires accurate assessment of stem temperature because temperature changes K by 2.4% oC-1. A computational algorithm for estimating stem temperature stability in a Cavitron rotor was derived. This algorithm provides information on how long it takes stem temperature to be known to within an error of ±0.1 oC. | |
| dc.language.iso | en | |
| dc.publisher | INRA Science and Impact | |
| dc.title.en | Improved precision of hydraulic conductance measurements using a Cochard rotor in two different centrifuges | |
| dc.type | Article de revue | |
| dc.subject.hal | Sciences du Vivant [q-bio] | |
| bordeaux.journal | Journal of Plant Hydraulics | |
| bordeaux.page | 9 p. | |
| bordeaux.volume | 1 | |
| bordeaux.hal.laboratories | BioGeCo (Biodiversité Gènes & Communautés) - UMR 1202 | * |
| bordeaux.institution | Université de Bordeaux | |
| bordeaux.institution | INRAE | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-02630996 | |
| hal.version | 1 | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-02630996v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal%20of%20Plant%20Hydraulics&rft.date=2014&rft.volume=1&rft.spage=9%20p.&rft.epage=9%20p.&rft.eissn=2426-413X&rft.issn=2426-413X&rft.au=WANG,%20Yujie&BURLETT,%20R%C3%A9gis&FENG,%20Feng&TYREE,%20Melvin%20T.&rft.genre=article |
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