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Showing 1 to 20 of 37 for “"Pinus strobus"”.
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Isolation and Characterization of Bioactive Metabolites from Endophytic Fungi of Pinus Strobus
Fungal foliar endophytes of Pinus strobus (Eastern white pine) were collected from different sites across south-eastern New Brunswick, Canada for screening of bioactive metabolite compounds. Metabolite isolation and characterization of three bioactive strains yielded the dibenzofuran derivative …
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GENETIC STRUCTURE OF PINUS STROBUS L BASED ON FOLIAR ISOZYMES FROM 27 PROVENANCES
<p>Genetic structure of eastern white pine (Pinus strobus L.) was studied with foliar isozymes from 27 provenances by starch gel electrophoresis. Twenty-one loci, five fixed, coding for 12 enzyme systems, including three invariants, were used for this study. Indirect evidence for genetic control of …
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Compression wood formation in Pinus strobus L. following ice storm damage in southwestern Virginia
… compression wood response in eastern white pine (Pinus strobus L.) following a severe ice storm in 1994, 47 trees were felled in 2007 and cross-sectional samples were collected at 0.5 (±0.2) m stem height. The disks were sanded and digitally scanned, and the cross-sectional area (mm2) of …
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In vitro establishment, shoot multiplication, and rooting of Pinus strobus, Pseudotsuga menziesii, and Thuja occidentalis 'Hetz Wintergreen'
… shoot proliferation and in vitro rooting of Pinus strobus (white pine), Pseudotsuga menziesii (Douglas fir) and Thuja occidentalis 'Hetz Wintergreen'.
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The response of 12 clones of eastern white pine (Pinus strobus L.) to ozone and nitrogen dioxide
… and scion from 12 ortets of eastern white pine (Pinus strobus L.) growing at the Radford Army Ammunition Plant (RAAP). The 12 ortets represented 4 symptom severity classes (3 ortets/class) ranging from trees with > 25% of their crowns exhibiting necrotic tipburn (Class I) to those with healthy …
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The effect of the white-pine weevil (Pissodes strobi Peck) on white pine (Pinus strobus L) in southwestern Virginia
Thirteen white pine plots, ranging from 15-26 years of age and one tenth acre in size, were sampled in six counties of southwestern Virginia. The number of trees attacked by the white-pine weevil ranged from 3.5 percent to 98.6 percent with an average of 40.0 percent. The incidence of forking was …
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The etiology of the decline of eastern white pine (Pinus strobus L.) on Virginia landscapes: a survey of stress factors
A decline of eastern white pine, Pinus strobus L., has been observed for over 80 years in the eastern United States. The syndrome has not always been discussed as a decline but reported under a variety of names. Symptoms vary with time required for trees to die, but generally include chlorotic …
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Variation in the physiological processes of eastern white pine (Pinus strobus L.) differing in sensitivity to ozone, sulfur dioxide, and nitrogen dioxide
Ten clones of eastern white pine (Pinus strobus L.) representing three different pollutant sensitivity classes (i.e. sensitive, intermediate, and tolerant) were exposed to ozone, sulfur dioxide, and nitrogen dioxide singly, and in. combinations at various concentrations. Visible symptom expression, …
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Physiological and morphological variation within and between populations of Suillus granulatus, as determined by mycorrhizal synthesis experiments
… used were from Nepal, (associated with Pinus wallichiana), Korea (Pinus densiflora) and the U.S. (Pinus strobus). Mycorrhizal effectiveness was used to measure host specificity. Useful characters for measuring mycorrhizal effectiveness were determined by ANOVAs between the uninoculated …
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Trace metal effects on ectomycorrhizal growth, diversity, and colonization of host seedlings
… reclamation project in Wise County, Virginia. Pinus strobus trees planted 1, 8, 13, and 25 years prior to the experiment were sampled. Colonization was lower than in well developed soils, but occurred on all seedlings. Increased colonization and a late stage mycobiont (Tuber) occurred on roots …
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Diversity of ectomycorrhizal fungi on two reclaimed surface mines differing in soil properties
… of ectomycorrhizal fungi on white pine (Pinus strobus) on two reclaimed surface mines in eastern Ohio. One site was acidic and metal-stressed, the other was alkaline. Completely different community composition was found on the two sites by PCR/ITS/RFLP analyses of field collected …
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Stand Dynamics in a Southern Appalachian Montane Pine Barren, Warm Springs Mountain, Virginia
… fire adapted species, such as dwarfed Pinus rigida (Mill.) and Quercus ilicifolia (Wangenh.), this shrubland is home to numerous rare plants and invertebrates. We used vegetation analysis and dendrochronology to document establishment and recruitment patterns and to identify …
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Survival and growth of pine seedlings on strip-mined sites
… foliar nutrient levels of container-grown white (Pinus strobus L.), loblolly (P. taeda L.), and Virginia pine (P. virginiana Mill.) seedlings were studied on a recontoured and a fiat bench strip-mine site in Southwestern Virginia. One-half of the seedlings was inoculated with Pisolithus tinctorius …
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Development and evaluation of trapping studies for Hylobius pales (Herbst) and Pissodes nemorensis Germar (Coleoptera: curculionidae) in Virginia Christmas tree plantations
… that newly planted white pine seedlings (Pinus strobus L.) were fed upon by H. pales at Significantly higher rates in plots not managed for competing vegetation than in herbicide treated plots. Feeding activity in mowed plots was intermediate. Trap catch did not correlate with seedling …
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Soil based vegetation productivity modeling for a northern Michigan surface mining region
… spruce (Picea glauca [Moench] Voss), red pine (Pinus resinosa Aniton), eastern white pine (Pinus strobus L.), jack pine (Pinus banksiana Lamb.), and lilac (Syringa vulgaris L.). Soil attributes that were examined in this research include: available water holding capacity, moist bulk density, % …
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Appalachian Surface Mine Reforestation Techniques: Effects of Grading, Cultural Treatments and Species Selection
… groups planted, including Eastern white pine (Pinus strobus), mixed native hardwoods had the best survival and hybrid poplar (Populus deltoides x Populus trichocarpa) produced the most biomass. Hybrid American chestnuts survived and grew better when planted as bare-root seedlings than when …
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Crop tree release impacts both the understory and overstory in mixed oak stands of the southern Appalachian Mountains
… red maple (Acer rubrum), eastern white pine (Pinus strobus), and blueberry species (Vaccinium spp.). We found that at two, three, five, and seven years post-release there was a significantly more understory stems surrounding released trees compared to non-released trees. Moreover, we found …
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Root growth potential and bud dormancy of three northern pines with emphasis on eastern white pine
… (1-0) and two-year-old (2-0) eastern white pine (Pinus strobus L.), red pine (Pinus resinosa Ait.), and Scotch pine (Pinus sylvestris L.) seedlings with emphasis on eastern white pine. During 1985-86 all three species of 2-0 stock displayed a similar pattern of RGP with high levels of RGP limited …
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Mine soil properties influencing white pine (Pinus atrobus L.) growth in Southwest Virginia
Thirty-six eight-year-old white pine (Pinus strobus L.) trees were used to identify minesoil, plant moisture, and foliar nutrient properties influencing white pine growth on reclaimed mine sites in southwest Virginia. PRESSAll (SAS Views, 1984) was used to determine relationships between soil …
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Sustainability of New Hampshire's sawmill industry and its forest resource base
… consumption and inventory of eastern white pine (Pinus strobus L.), the most dominant commercial species in New Hampshire. This research profiled the sawmill industry in New Hampshire and Vermont in terms of production, consumption, labor characteristics and regulating economic and policy issues. …
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