Journal Article

Seasonal dynamics of electrical impedance parameters in shoots and leaves related to rooting ability of olive (<i>Olea europea</i>) cuttings

Stefano Mancuso

in Tree Physiology

Volume 19, issue 2, pages 95-101
Published in print February 1999 | ISSN: 0829-318X
Published online February 1999 | e-ISSN: 1758-4469 | DOI: http://dx.doi.org/10.1093/treephys/19.2.95
Seasonal dynamics of electrical impedance parameters in shoots and leaves related to rooting ability of olive (Olea europea) cuttings

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Electrical impedance parameters were measured in shoots and leaves of Olea europaea L. for 18 months to determine seasonal variations in intracellular and extracellular resistances and in the state of membranes; these factors were related to rooting ability. Double- and single-DCE (ZARC) models were used as equivalent circuits for shoots and leaves, respectively. Seasonal variations were observed in all of the impedance parameters measured. Intracellular resistance of the shoots increased during the winter resting period, whereas intracellular resistance of the leaves decreased. Relaxation times for both leaves and shoots decreased during the winter. Close relationships were found between rooting ability and intracellular and extracellular resistances and relaxation times of shoots and leaves.

Keywords: cell membranes; extracellular resistance; intracellular resistance; vegetative propagation

Journal Article.  0 words. 

Subjects: Plant Sciences and Forestry

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