EFFECT OF BARK STRIPPING ON T HE ELECTRICAL IMPEDANCE OF QUERCUS SUBER LEAVES

Abdelillah Hakam, Mariange Magne Takam, Mustapha Chokairi, Noureddine Alami Chantou, Zeinedine Hamoutahra, Abdelaziz El Alami, Abderrahim Famiri, Mohsine Zian, Joseph Gril

Abstract


is study examined the e ect of bark stripping on the electrical impedance parameters of cork
oak young leaves between 40Hz and 100 kHz. is was a new application of the electrical impedances
spectroscopy (EIS) in plant science. Various stripping coe cients (CD) were applied on the trees.
Bark stripping is expected to a ect water metabolism of leaves and therefore changes in the EIS
parameters are expected as well. Single-DCE (ZARC) model was used as equivalent circuit for
leaves. Several electrophysiological parameters of this model were compared with moisture content
(MC) of the leaves. Intracellular resistance (Ri), extracellular resistance (Re) and relaxation time ()
of the leaves increased during 14 days a er stripping while the distributed coe cient () and MC
decreased. Signi cant correlation between EIS parameters, MC and trees treatments were found.

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