. Biology of rust resistance in forest trees : proceedings of a NATO-IUFRO advanced study institute, August 17-24, 1969. Trees; Pine; Trees; Rust diseases. WHITE PINES OF EUROPE 103 H€IGHT m»fKJ ' *W. IS 20 25 30 35 40 ACE yars Figure 2. Juvenile growth of European white pines: = Pinus peuce after growth curves (Nedjalkov, 1963, Bulgaria); _rj = single-tree data (after MacDonald et at., 1957, England) zy = after Mtiller (1928, Bulgaria, natural); p^ = after Mayer (1965, Austria, planted); a = Pinus eembra, with elevation of growing place (200 m, Holzer,1969; 2000 m and 2200 m, Osw
. Biology of rust resistance in forest trees : proceedings of a NATO-IUFRO advanced study institute, August 17-24, 1969. Trees; Pine; Trees; Rust diseases. WHITE PINES OF EUROPE 103 H€IGHT m»fKJ ' *W. IS 20 25 30 35 40 ACE yars Figure 2. Juvenile growth of European white pines: = Pinus peuce after growth curves (Nedjalkov, 1963, Bulgaria); _rj = single-tree data (after MacDonald et at., 1957, England) zy = after Mtiller (1928, Bulgaria, natural); p^ = after Mayer (1965, Austria, planted); a = Pinus eembra, with elevation of growing place (200 m, Holzer,1969; 2000 m and 2200 m, Oswald, 1963); Sq = after Gregori (188", natural); s = Pinus szbirioa (grown in the nursery of Vienna, 200 m, Holzer,1969); a = Picea abies for comparison at 200 m (unpublished data, Forstliche Bundesversuchsanstalt, Vienna),2000 m (Oswald, 1963) a^ = data after growth curves (Frauendorfer, 1954) ; m-Q = single value for Pinus monticola in England (MacDonald et al. , 1957) . At about this age (10 to 15 years) , P. oerbra and P. peuoe plants begin to make regular growth every year, with terminal shoots reaching i length of 10 to 20 cm (Oswald, 1963'; Gregori, 1887; Mtlller, 1928: Nedjalkov, 1963). Growth differences that appear at this age may be associated with inherent parental growth capacity, with altitudinal provenance, or with site. Presently we don't know much about this; but we may theorize that differences are partly inherent because the growth of graftings from adult plants is similar to the growth of seedlings from the same parents (Holzer, 1969). In the natural range seeds are distributed by jays and squirrels (Oswald, 1956). As the stand ages very often we may find individuals of. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original North Atlantic Treaty Organization; International Union of Fores
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Keywords: ., bookauthoruni, bookcentury1900, booksubjectpine, booksubjecttrees
