Ecophysiological response to severe drought in Pinus halepensis Mill. trees of two provenances
Rent the article at a discountRent now
* Final gross prices may vary according to local VAT.Get Access
As a result of predicted regional climatic changes the need to select for the more drought-tolerant genotypes (ecotypes) among Mediterranean conifers has become clear. Aleppo pine (Pinus halepensisMill.) seems to be one of the most drought-tolerant pine species. Nevertheless, the existence of geographical trends in their genetic differentiation indicates potentially large differences in drought-tolerance among provenances. This assumption was verified by the finding of large variation among provenances in their internal water relations. Hence, the aim of this study was to compare the ecophysiological behaviour of several Aleppo pine provenances under contrasting climatic conditions. Growth parameters (height and diameter) and survival rate were measured in two provenance trials, one planted under sub-desertic conditions at the northern edge of the Negev desert, and the second under thermo-Mediterranean climatic conditions in the central coastal plains, Israel. Ecophysiological parameters such as: predawn needle water potential, sap flow in the xylem (i.e. transpiration), photosynthesis and water-use efficiency were measured in trees of selected provenances. The results suggest that it is not possible to predict provenance performance under harsh conditions from their performance under more favourable ones. Therefore, selection must be carried out under the exact conditions in which the trees from the resultant selection will be planted. The present study clearly emphasises the need for broad selection programs of P. halepensis.
- Bariteau M., Huc R. and Vendramin G.G. (Co-ordinators) 2002. Adaptation and selection of Mediterranean Pinus and Cedrus for sustainable afforestation of marginal lands. Final report to research contract No. FAIR CT95?0097, Commission of the European Communities.
- Borghetti M., Cinnirella S., Magnani F. and Saracino A. 1998. Impact of long-term drought on xylem embolism and growth in Pinus halepensis. Trees 12: 187-195.
- Calamassi R., Rocca G.D., Falusi M., Paoletti E. and Strati S. 2001. Resistance to water stress in seedlings of eight European provenances of Pinus halepens Mill. Annals of Forest Sciences 58: 663-672.
- Cohen A., Magaritz M. and Graber M. 1993. Workshop summary. In: Graber M. Cohen A. and Magaritz M. (eds), Regional implications of future climate change. Israel Academy of Sciences and Humanities, Jerusalem, pp. 1-5.
- Cohen Y. 1994. Thermoelectric methods for measurement of sap flow in plants. In: Stenhill G. (ed), Advances in bioclimatology, vol. 3. Springer Verlag, Heidelberg, Germany, pp. 63-88.
- Critchfield W.B. and Little E.L. Jr. 1966. Geographic distribution of the pines of the world. USDA, Forest Service, Miscellaneous publication 991.
- Grünwald C. and Schiller G. 1988. Needle xylem water potential and water saturation deficit in provenances of Pinus halepensis Mill. and P. brutia Ten. Forêt Méditerranéene 10: 407-414.
- Houghton J.T., Jenkins G.J. and Ephraums J.J. 1990. Policymakers summary. In: Houghton J.T., Jenkins G.J. and Ephraums J.J. (eds), Climate change, the IPCC scientific assessment. Cambridge University Press, Cambridge, MA, pp. 11-34.
- Korol L., Shklar G. and Schiller G. 2001a. Diversity among circum-Mediterranean populations of Aleppo pine and differentiation from Brutia pine in their isoenzymes: Additional results. Silvae Genetica 50: 35-41.
- Korol L., Shklar G. and Schiller G. 2001b. Site influence on the genetic variation and structure of Pinus halepensis Mill. provenances. Forest Genetics 8: 295-305.
- Korol L., Shklar G. and Schiller G. 2002. Genetic variation within Pinus halepensis Mill. provenances growing in different microenvironments in Israel. Israel Journal of Plant Sciences 50: 135-143. CrossRef
- Melzack R.N. Bravdo B. and Riov J. 1985. The effect of water stress on photosynthesis and related parameters in Pinus halepensis Mill. Physiologia Plantarum 64: 295-300. CrossRef
- Mirov N.T. 1967. The Genus Pinus. The Ronald Press Company, New York.
- Morandini R. 1976. Mediterranean conifers. In: Forest genetic resources information ? No. 5. Forestry Occasional Paper 1976/1. FAO, Rome, Italy, pp. 12-18.
- Oppenheimer H.R. 1967. Mechanisms of drought resistance in conifers of the Mediterranean zone and the arid west of the U.S.A. Part I: Physiological and Anatomical investigations. Final Report on project No. A10?FS 7, Grant No. FG?Is?119. The Hebrew University of Jerusalem, Faculty of Agriculture, Rehovot, Israel.
- Royo A., Gil L. and Pardos J.A. 2001. Effect of water strees conditioning on morphology, physiology and field performance of Pinus halepensis Mill seedlings. New Forest 21: 127-140. CrossRef
- Schiller G. 1977. Interrelation between site factors and performance of Aleppo pine in the Sha’ar ha′Gay forest. La-Yaaran 27: 13-23 (Hebrew with English summary).
- Schiller G. and Cohen Y. 1997. Water balance of Pinus halepensis Mill. afforestation in an arid region. Forest Ecology and Management 105: 121-128.
- Schiller G. and Cohen Y. 1995.Water regime of a pine forest under a Mediterranean climate. Agricultural and Forest Meteorology 74: 181-193. CrossRef
- Schiller G., Conkle M.T. and Grunwald C. 1986. Local differentiation among Mediterranean populations of Aleppo pine in their isoenzymes. Silvae Genetica 35: 11-19.
- Scholander P.F., Hammel H.T., Bradstreet E.D. and Hemminsen, E.A. 1965. Sap pressure in vascular plants. Science 149: 339-346.
- Tognetti R., Michelozzi M. and Giovannelli A. 1997. Geographic variation in water relations, hydraulic architecture and terpene composition of Aleppo pine seedlings from Italian provenances. Tree Physiology 17: 241-250.
- UNESCO-FAO. 1963. Bioclimatic Map of the Mediterranean Zone, Explanatory Notes. Arid Zone Research XXI, UNESCO, Paris and FAO, Rome.
- Ecophysiological response to severe drought in Pinus halepensis Mill. trees of two provenances
Volume 171, Issue 1-2 , pp 15-22
- Cover Date
- Print ISSN
- Online ISSN
- Kluwer Academic Publishers
- Additional Links
- Drought tolerance
- Global climate change