Dissemin is shutting down on January 1st, 2025

Published in

Springer Verlag, Annals of Forest Science, 6(58), p. 663-672

DOI: 10.1051/forest:2001153

Links

Tools

Export citation

Search in Google Scholar

Resistance to water stress in seedlings of eight European provenances of Pinus halepensis Mill

This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

Full text: Download

Green circle
Preprint: archiving allowed
Green circle
Postprint: archiving allowed
Red circle
Published version: archiving forbidden
Data provided by SHERPA/RoMEO

Abstract

In this study, pressure/volume curves were performed on 24-week-old seedlings of eight European provenances of Pinus halepensis Mill. subsp. halepensis after one week of water stress (-0.033, -0.4, -0.8, -1.2, -1.6 MPa). P. halepensis showed osmotic adjustments as a response to water stress, although the response varied between the provenances. Apoplastic water remained relatively constant. The elasticity module did not differ significantly. Water deficit at incipient plasmolysis and water content decreased as the stress increased. Water potential was markedly negative, even in seedlings not subjected to stress. The provenances from less xeric sites behaved similarly to species from non-arid sites, while those from more xeric sites displayed the strategy typical of drought-tolerant species. The impact on all provenances of one week of low-intensity water stress (-0.4 MPa) was slight. As the stress increased, the response varied between the provenances: N-Eubea > Kassandra > Litorale tarantino ≅ Guardiola > Otricoli ≅ E-Bouches du Rhône ≥ Hérault ≅ N-Vaucluse (in decreasing order).