Wood density, tracheid length and growth rate were measured in Aleppo pine scions, 21–23 years old, and in Brutia pine rootstocks. In regard to the relationship between cambial age and dry density the results showed that the density increased with cambial age in both scions and rootstocks while the differences between Aleppo pine and Brutia pine were small. The relationship between cambial age and tracheid length showed an increase of tracheid length with cambial age. Differences between scions and rootstocks were small. From the last relationship it can be extracted that juvenile wood is produced in both scions and rootstocks although the Aleppo pine branches which were used for grafting were genetically matured. Between ring width and dry density and between ring width and tracheid length no statistical correlations were found either in scions or in rootstocks. The tracheid length in mature wood was higher than in juvenile wood. An increase of tracheid length with ring width was observed only in the case of juvenile wood.
wood quality; juvenile wood; mature wood; scions; rootstocks
Anonymous (1963): Seventh Annual Report. N.C. State – Industry Cooperative Tree Improvement Program. Raleigh, North Carolina State College, School of Forestry: 27.
Chavenetidou M.A., Foti D.E. (2007): Effect of extractives on wood density of Aleppo pine (Pinus halepensis Mill.), Brutia pine (Pinus brutia Ten.) and Chestnut (Castanea sativa Mill.) trees. Forest Research, 20: 23–32.
Dinwoodie J. M. (1961): Tracheid and Fibre Length in Timber a Review of Literature. Forestry: An International Journal of Forest Research, 34, 125-144
https://doi.org/10.1093/forestry/34.2.125
Greenwood M.S., Hutchinson K.W. (1993): Maturation as a development process. In: Ahuja M.R., Libby W.J. (eds): Clonal Forestry I: Genetics and Biotechnology. Berlin, Springer-Verlag: 14–33.
Jayawickrama K. J. S., Jett J. B., McKeand S. E. (1991): Rootstock effects in grafted conifers: A review. New Forests, 5, 157-173
https://doi.org/10.1007/BF00029306
Miyata M., Ubukata M., Eliga S. (1991): Clonal differences of the chemical constituents’ contents of grafted plus-tree woods of Japanese red pine and Japanese black pine. Journal of the Japanese Forestry Society, 73: 151–153.
Panshin A.J., de Zeeuw C. (1980): Textbook of Wood Technology. 4th Ed. New York, McGraw-Hill: 722.
Saranpää P. (2003): Wood density and growth. In: Barnett J.R., Jeronimidis G. (eds): Wood Quality and Its Biological Basis. Oxford, Blackwell Publishing Ltd.: 87–117.
Skaltsogiannis A., Tsaktsira M. (2014): Investigation of genetic variation of natural populations of Pinus brutia and Pinus nigra of Samos island. Utilization potentials and prospective. In: Dimitriou N. (ed.): Proceedings of the Scientific Meeting “The Samos’ Pine and the Traditional Harvesting in Samos Island”, Samos, Nov 22, 2014: 212–214.
Tsoumis G. (1968): Wood as Raw Material. New York, Pergamon Press: 288.
Tsoumis G. (1991): Science and Technology of Wood. New York, Van Nostrand Reinhold: 494.
White T.L., Adams W.T., Neale D.B. (2007): Forest Genetics. Wallingford, CABI: 500.
Zobel B.J., van Buijtenen J.P. (1989): Wood Variation: Its Causes and Control. New York, Springer-Verlag: 363.
Zobel B.J., Sprague J.R. (1998): Juvenile Wood in Forest Trees. New York, Springer-Verlag: 304.
