נגישות
menu      
Advanced Search
Syntax
Search...
Volcani treasures
About
Terms of use
Manage
Community:
אסיף מאגר המחקר החקלאי
Powered by ClearMash Solutions Ltd -
Theoretical analysis of systematic errors introduced by a pedicel-girdling technique used to estimate separately the xylem and phloem flows
Year:
2001
Source of publication :
Journal of Theoretical Biology
Authors :
Fishman, S. N.
;
.
Volume :
213
Co-Authors:
Fishman, S., Department of Statistics and Operations Research, Agricultural Research Organization, Volcani Center, Bet Dagan, 50250, Israel
Génard, M., Unité De Recherche En Ecophysiologie Et Horticulture, Institut National De La Recherche Agronomique, Domaine Saint-Paul, Site Agroparc, 84914, Avignon Cedex 9, France
Huguet, J.-G., Unité De Recherche En Ecophysiologie Et Horticulture, Institut National De La Recherche Agronomique, Domaine Saint-Paul, Site Agroparc, 84914, Avignon Cedex 9, France
Facilitators :
From page:
435
To page:
446
(
Total pages:
12
)
Abstract:
The water budget of fruits was analysed by means of a biophysical model of fruit growth, built and calibrated recently for peaches [Prunus persica (L.) Batsch]. This analysis was applied to the evaluation of systematic errors introduced by a pedicel-girdling method (with the observations being treated by means of a subtractive technique) used to separate the contributions of xylem and phloem flow to the total water inflow to the fruit. The flows were considered as solution transport through composite membranes and were calculated by means of equations drawn from non-equilibrium thermodynamics. The total inflow of water was simulated as dependent on the water status in the tree. The hourly time step was used for the simulation. The flows obtained by simulation of the pedicel-girdled fruit were compared with those found by simulation of the intact-pedicel fruit. The error introduced by the pedicel-girdling technique was evaluated theoretically and was shown to vary during the day, ranging from very small (relative error of 3-7%) at the period when the rate of fruit growth is maximal to 100% when the fruit volume does not change. The vascular flows obtained from the "girdling experiments" are discussed in relation to the possible theoretically estimated errors. © 2001 Academic Press.
Note:
Related Files :
Flow measurement
plant growth
Prunus
Prunus persica
sensitivity and specificity
trees
water
Show More
Related Content
More details
DOI :
10.1006/jtbi.2001.2442
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
21258
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:42
Scientific Publication
Theoretical analysis of systematic errors introduced by a pedicel-girdling technique used to estimate separately the xylem and phloem flows
213
Fishman, S., Department of Statistics and Operations Research, Agricultural Research Organization, Volcani Center, Bet Dagan, 50250, Israel
Génard, M., Unité De Recherche En Ecophysiologie Et Horticulture, Institut National De La Recherche Agronomique, Domaine Saint-Paul, Site Agroparc, 84914, Avignon Cedex 9, France
Huguet, J.-G., Unité De Recherche En Ecophysiologie Et Horticulture, Institut National De La Recherche Agronomique, Domaine Saint-Paul, Site Agroparc, 84914, Avignon Cedex 9, France
Theoretical analysis of systematic errors introduced by a pedicel-girdling technique used to estimate separately the xylem and phloem flows
The water budget of fruits was analysed by means of a biophysical model of fruit growth, built and calibrated recently for peaches [Prunus persica (L.) Batsch]. This analysis was applied to the evaluation of systematic errors introduced by a pedicel-girdling method (with the observations being treated by means of a subtractive technique) used to separate the contributions of xylem and phloem flow to the total water inflow to the fruit. The flows were considered as solution transport through composite membranes and were calculated by means of equations drawn from non-equilibrium thermodynamics. The total inflow of water was simulated as dependent on the water status in the tree. The hourly time step was used for the simulation. The flows obtained by simulation of the pedicel-girdled fruit were compared with those found by simulation of the intact-pedicel fruit. The error introduced by the pedicel-girdling technique was evaluated theoretically and was shown to vary during the day, ranging from very small (relative error of 3-7%) at the period when the rate of fruit growth is maximal to 100% when the fruit volume does not change. The vascular flows obtained from the "girdling experiments" are discussed in relation to the possible theoretically estimated errors. © 2001 Academic Press.
Scientific Publication
You may also be interested in