The present study tries to clarify the anatomical basis of the hydraulic properties of the internodes and nodes of oneyearold twigs of Vitis vinifera L. and Populus deltoides Bartr. In particular, the higher resistance to flow as exhibited by the nodal regions of both species, appears to be due to a lower number of largediameter vessels in the nodes as compared with that in the internodes. In Populus, beside this aspect, the nodal constriction is also due to a larger number of narrowdiameter vessels. © 1982, Taylor & Francis Group, LLC.

Hydraulic architecture of vitis vinifera l, and populus deltoides bartr. 1yearold twigs: Iithe nodal regions as”constriction zones “of the xylem system

FIORETTO, Antonietta;
1982

Abstract

The present study tries to clarify the anatomical basis of the hydraulic properties of the internodes and nodes of oneyearold twigs of Vitis vinifera L. and Populus deltoides Bartr. In particular, the higher resistance to flow as exhibited by the nodal regions of both species, appears to be due to a lower number of largediameter vessels in the nodes as compared with that in the internodes. In Populus, beside this aspect, the nodal constriction is also due to a larger number of narrowdiameter vessels. © 1982, Taylor & Francis Group, LLC.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11591/219919
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