Index Catalog // ScholarsArchive@OSU

Simulating Effects of Genetic Tree Improvement on Growth and Yield of Coastal Douglas-fir

Creator:: Joo, Sukhyun
Abstract:: Estimating volume gains in genetically improved stands at rotation age is challenging because first-generation progeny tests in Douglas-fir were typically established to measure the relative growth performance of individual trees from open-pollinated parent trees. The overall goal of this dissertation research was to improve growth simulation of genetically improved Douglas-fir...
Resource Type:: Dissertation
Full Text:: Title: Simulating Effects of Genetic Tree Improvement on Growth and Yield of Coastal Douglas-fir

The impact of microclimate variation on budburst phenology within a mature Douglas-fir tree (Pseudostuga menziesii)

Creator:: Miller, Rebecca A.
Abstract:: Budburst, the initiation of annual growth in plants, is sensitive to climate variation and is therefore used to monitor physiological responses to climate change. Budburst timing can vary between regions of an individual tree, but this phenomenon it is unaccounted for in current monitoring efforts and may contribute to the...
Resource Type:: Undergraduate Thesis

Micropropagation of Douglas fir (Pseudotsuga menziesii) in a double-phase culture medium

Creator:: Gross, Leah M.
Abstract:: The timber and Christmas tree industries are important components of the Pacific Northwest economy. A goal of both industries is to produce high quality trees with high growth rates. Accomplishing this requires increased genetic quality of the trees grown. Tissue culture provides the most promise for propagating these superior genotypes....
Resource Type:: Honors College Thesis

Managing Douglas-fir Mortality: Case Studies from Western Oregon

Creator:: Campbell, Lewis
Abstract:: An increase in frequency and severity of hot, dry summers has been associated with a dramatic shift in the coniferous forests of western Oregon’s valleys, especially on the privately-owned properties along the low-elevation edges of these valleys. Various conifer species, including Douglas-fir (Pseudotsuga menziesii), are declining in these forests, leaving...
Resource Type:: Capstone Project
Full Text:: . Title: Managing Douglas-fir Mortality: Case Studies from Western Oregon Abstract approved

Douglas-fir hydraulic architecture and relationships among xylem properties at multiple scales via a Bayesian analysis

Creator:: Dunham, Sonya M.
Abstract:: This study investigated variation in xylem anatomy, hydraulic properties, and the relationship between anatomy and properties within Douglas-fir trees at multiple scales. The hierarchical scales in the study included fertilization treatments (fertilized and unfertilized), trees within the treatments, and positions within the trees. Tracheid diameter, tracheid length, percent latewood, number...
Resource Type:: Masters Thesis
Full Text:: , 2006. Title: Douglas-fir Hydraulic Architecture and Relationships Among Xylem Properties at Multiple

Influence of spacing and crown recession on wood quality of intensively-managed young-growth Douglas-fir

Creator:: Robbins, James M.
Abstract:: Intensive management of young-growth Douglas-fir plantations has emphasized volume growth over wood quality. A better understanding of the variables that affect wood quality is needed so that wood quality and stand yield can be systematically combined into a silviculture program. This experiment utilized two separate experiments to establish the relationship...
Resource Type:: Masters Thesis
Full Text:: : Influence of Spacing and Crown Recession on Wood Quality of Intensively-Managed Young-Growth Douglas-fir

Stiffness of Douglas-fir lumber : effects of wood properties and genetics

Creator:: Vikram, Vikas
Abstract:: Wood stiffness is one of the most important properties of lumber and veneer. We studied wood stiffness (modulus of elasticity, MOE), wood density, microfibril angle, and knots in a 25 year-old wind pollinated progeny test (50 families, ~ 373 trees) of coastal Douglas-fir to understand the potential for genetically improving...
Resource Type:: Masters Thesis
Full Text:: : Stiffness of Douglas-fir Lumber: Effects of Wood Properties and Genetics. Abstract approved

Identifying candidate genes associated with cold adaptation in Douglas-fir using DNA microarrays

Creator:: Howe, Dana Kathryn
Abstract:: In forest trees from temperate and boreal regions, cold acclimation is an important adaptive trait that involves changes in gene expression and physiology. Genecological, quantitative genetic, and QTL studies have been used to study the genetics of cold acclimation in Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco), but the genes responsible for...
Resource Type:: Masters Thesis
Full Text:: , 2006. Title: Identifying Candidate Genes Associated with Cold Adaptation in Douglas-fir using DNA

Early genetic selection for wood stiffness in juvenile Douglas-fir and western hemlock

Creator:: Urhan, Oguz S.
Abstract:: Wood modulus of elasticity (MOE), also known as wood stiffness, is one of the most important wood properties. Wood stiffness is a measure of the resistance to deflection, and is important because some products such as laminated veneer lumber, plywood, and dimension lumber require stiff and strong wood. Incorporating wood...
Resource Type:: Masters Thesis
Full Text:: Douglas fir and Western Hemlock. AN ABSTRACT OF THE THESIS OF Oguz S. Urhan for the degree of

Estimating spatial changes in acoustic velocity in felled Douglas-fir stems

Creator:: Dowding, Bodie
Abstract:: To compete with other building materials, the wood products industry must find a way to increase value and lower costs. Wood stiffness is important for most wood uses. Value can be increased and costs can be lowered by sorting logs for stiffness in the woods using acoustic devices mounted on...
Resource Type:: Masters Thesis
Full Text:: Douglas-fir Stems Abstract approved: Glen Murphy To compete with other building materials

ScholarsArchive@OSU

Simulating Effects of Genetic Tree Improvement on Growth and Yield of Coastal Douglas-fir

The impact of microclimate variation on budburst phenology within a mature Douglas-fir tree (Pseudostuga menziesii)

Micropropagation of Douglas fir (Pseudotsuga menziesii) in a double-phase culture medium

Managing Douglas-fir Mortality: Case Studies from Western Oregon

Douglas-fir hydraulic architecture and relationships among xylem properties at multiple scales via a Bayesian analysis

Influence of spacing and crown recession on wood quality of intensively-managed young-growth Douglas-fir

Stiffness of Douglas-fir lumber : effects of wood properties and genetics

Identifying candidate genes associated with cold adaptation in Douglas-fir using DNA microarrays

Early genetic selection for wood stiffness in juvenile Douglas-fir and western hemlock

Estimating spatial changes in acoustic velocity in felled Douglas-fir stems

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