Systemic Fungicides; The Translocation and Persistence of Tritium-Labeled Cycloheximide in Eastern White Pine Seedlings

1961 ◽  
Vol 9 (4) ◽  
pp. 254-256
Author(s):  
R. Thomas ◽  
A. Lemin
Keyword(s):  
White Pine ◽  
Eastern White Pine ◽  
Systemic Fungicides ◽  
Pine Seedlings

Pathogenicity of three fungal associates of Hylobiuspales and Pissodesnemorensis (Coleoptera: Curculionidae) to eastern white pine

1992 ◽  
Vol 22 (9) ◽  
pp. 1438-1440 ◽  
Author(s):  
R.J. Nevill ◽  
S.A. Alexander
Keyword(s):  
The Other ◽  
Lesion Length ◽  
Malt Extract ◽  
Perfect State ◽  
White Pine ◽  
Eastern White Pine ◽  
Pine Seedlings ◽  
Blue Stain Fungi ◽  
Blue Stain ◽  
Fungal Associates

The pathogenicity of three fungal associates of the pine reproduction weevils, Hylobiuspales (Hbst) and Pissodesnemorensis Germar, to eastern white pine (Pinusstrobus L.) was investigated. Three-year-old eastern white pine seedlings were inoculated with isolates of Leptographiumprocerum (Kendr.) Wingf., Ophiostomapiceae (Munch) Sydow & Sydow, or a Graphium species that produced no perfect state. The inoculations were made by wounding the seedlings and inserting a block of malt extract agar colonized by the respective fungi into the wounds. After 3 months, the wounds of seedlings inoculated with L. procerum were resinous and there were significantly longer lesions in the bark and sapwood than in seedlings inoculated with the other fungi. Based on reisolation from the xylem, both L. procerum and O. piceae colonized the sapwood beyond lesions or any visual discoloration, but the Graphium species did not. These results confirm the pathogenicity of L. procerum and O. piceae and suggests that lesion length alone does not fully characterize colonization by some blue stain fungi.

Growth and physiological response of eastern white pine seedlings to partial cutting and site preparation

2007 ◽  
Vol 240 (1-3) ◽  
pp. 151-164 ◽  
Author(s):  
Jean-François Boucher ◽  
Pierre Y. Bernier ◽  
Hank A. Margolis ◽  
Alison D. Munson
Keyword(s):  
Physiological Response ◽  
Site Preparation ◽  
White Pine ◽  
Eastern White Pine ◽  
Partial Cutting ◽  
Pine Seedlings

Effect of aluminum on the growth, anatomy, and nutrient content of ectomycorrhizal and nonmycorrhizal eastern white pine seedlings

1995 ◽  
Vol 25 (8) ◽  
pp. 1252-1262 ◽  
Author(s):  
George A. Schier ◽  
Carolyn J. Mcquattie
Keyword(s):  
Root Growth ◽  
Nutrient Content ◽  
Ectomycorrhizal Fungus ◽  
Al Toxicity ◽  
White Pine ◽  
Eastern White Pine ◽  
Solution Ph ◽  
Foliar Symptoms ◽  
Pine Seedlings ◽  
Uptake Of Nutrients

Effect of aluminum (Al) on the growth, anatomy, and nutrient content of eastern white pine (Pinusstrobus L.) was determined by growing newly germinated seedlings for 12 weeks in sand irrigated with nutrient solution (pH 3.8) containing 0, 12.5, 25, 50, 75, or 100 mg/L of Al. To determine the influence of mycorrhizal infection on Al toxicity, half of the seedlings were inoculated with the ectomycorrhizal fungus Pisolithustinctorius (Pers.) Coker & Couch. Across Al concentrations, shoot growth (height, needle length, biomass) but not root growth (lateral root length, biomass) was significantly greater in ectomycorrhizal (ECT) than nonmycorrhizal (NM) seedlings. Aluminum significantly decreased shoot and root growth in ECT and NM seedlings but had less effect on growth in ECT seedlings. Foliar symptoms of Al toxicity (chlorosis, tip necrosis) were more pronounced in NM than in ECT seedlings. Cellular and ultrastructural injury to needles and root meristematic tissues was observed at lower concentrations of Al in NM seedlings than in ECT seedlings. Amelioration of Al toxicity by mycorrhizal colonization appeared to result from enhanced uptake of nutrients, especially P, rather than to reduced uptake of Al.

Growth and water potential of j-rooted loblolly and eastern white pine seedlings over three growing seasons

New Forests ◽  
1990 ◽  
Vol 4 (2) ◽  
pp. 147-153 ◽  
Author(s):  
John R. Seiler ◽  
David J. Paganelli ◽  
Ben H. Cazell
Keyword(s):  
Water Potential ◽  
White Pine ◽  
Eastern White Pine ◽  
Growing Seasons ◽  
Pine Seedlings

Performance of Eastern White Pine and Competing Vegetation Following Two Methods of Stand Conversion

1977 ◽  
Vol 1 (3) ◽  
pp. 7-9 ◽  
Author(s):  
Phillip C. Freeman ◽  
D. H. Van Lear
Keyword(s):  
South Carolina ◽  
Average Diameter ◽  
Treatment Combination ◽  
White Pine ◽  
Eastern White Pine ◽  
Growth And Survival ◽  
Growing Seasons ◽  
Pine Seedlings ◽  
Stand Conversion ◽  
Sprout Growth

Abstract Growth and survival of eastern white pine (Pinus strobus L.) seedlings planted beneath a residual hardwood overstory were compared for two growing seasons with seedlings in a clearcut area in the Piedmont of South Carolina. After two growing seasons, average diameter of white pine seedlings was significantly greater in the clearcut area. Seedling diameters in the clearcut were further increased by herbicide spraying, but not in the residual overstory plots where overstory competition inhibited sprout growth. Neither height growth nor survival (49 percent overall) of white pine seedlings was influenced by any treatment combination.

Root growth potential and shoot activity of northern and southern provenances of 1–0 eastern white pine seedlings grown in a Virginia nursery

1988 ◽  
Vol 18 (5) ◽  
pp. 610-614 ◽  
Author(s):  
Kurt H. Johnsen ◽  
Peter P. Feret ◽  
John R. Seiler
Keyword(s):  
Root Growth ◽  
Genetic Control ◽  
Growth Potential ◽  
White Pine ◽  
Eastern White Pine ◽  
Root Growth Potential ◽  
Pine Seedlings ◽  
Southern Half ◽  
Sib Families ◽  
Potential Test

Root growth potential and shoot activity were examined from October until April using northern and southern half-sib families of 1–0 eastern white pine (Pinusstrobus L.) seedlings (grown in a Virginia nursery). There were significant differences in root growth potential between northern and southern provenances and this was apparently due to the larger size of seedlings of southern origin. Heritability estimates indicate that root growth potential is under minimal genetic control in 1–0 eastern white pine seedlings. Southern provenances maintained higher shoot activity at the end of the root growth potential test during the autumn months. By April, northern provenances had surpassed southern provenances in shoot activity. Large differences in shoot activity did not result in large root growth potential differences which may indicate that bud dormancy status does not highly influence root growth potential in 1–0 eastern white pine seedlings.

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