. Annual report, 1954. Forests and forestry Southern States Periodicals; Forests and forestry Research Southern States Periodicals. both slash and loblolly pine. Plots of a seed-source study of longleaf pine planted in southeastern Virginia had a high percentage of Sonderegger pine seedlings from the lot of seed collected locally at the northern limit of long- leaf, although Sonderegger pines were supposedly culled at the nursery; only seedlings with no apparent height growth at 1 year were planted. One planted seedling was 1. 5 feet tall at the end of the second year from seed. Development of
. Annual report, 1954. Forests and forestry Southern States Periodicals; Forests and forestry Research Southern States Periodicals. both slash and loblolly pine. Plots of a seed-source study of longleaf pine planted in southeastern Virginia had a high percentage of Sonderegger pine seedlings from the lot of seed collected locally at the northern limit of long- leaf, although Sonderegger pines were supposedly culled at the nursery; only seedlings with no apparent height growth at 1 year were planted. One planted seedling was 1. 5 feet tall at the end of the second year from seed. Development of High-Yielding Naval Stores Pines In an earlier study of the factors affecting gum flow, an equation was worked out estimating the relative yielding capacity of slash pine trees. This equation shows that flow rate of gum in a random sample of trees is proportional to the number of radial resin ducts per unit area multiplied by the average size of the ducts and divided by the viscosity of the gum. The next step was to determine which of these factors are inherited and to what extent. In a progeny test of slash pine trees (fig. 16) it was demonstrated that gum yield is an inherited characteristic in slash pine. Progeny from outstanding. Figure 16.—Keith W. Dorm an, who control-bred and planted the first seedlings for progeny testing of high-yielding turpentine pines, and Francois Mergen, who demonstrated the inherited nature of gum yield and viscosity, observe the fruits of their handiwork in a 9-year-old slash pine plantation. - 22. 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 Southeastern Forest Experiment Station (Asheville, N. C. ). Asheville, N. C. : Southeastern Forest Experiment Station
Size: 1368px × 1826px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookcollectionameri, bookcollectionbiodiversity
