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

O Criador:

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
The occurrence of abscisic acid in the dormant shoots of Douglas-fir [Pseudotsuga menziesii (Mirb.) Franco]

O Criador:

Webber, John Edinburgh

Abstract:

Methanolic extracts of the dormant Douglas-fir shoots (buds, leaves, and stems) were fractionated by solvent partitioning (sodium bicarbonate-diethyl ether). The acidic portion of the extract was subjected to column (Sephadex LH-2O, Silica Gel and Polyvinylpyrrolidone), preparative thick-layer and gas-liquid chromatography. Fractions collected from chromatographic separations were collected and tested for...

Resource Type:

Dissertation
Wood properties and use of sensor technology to improve optimal bucking and value recovery of Douglas-fir

O Criador:

Acuna, Mauricio A.

Abstract:

There are a number of wood properties which affect the quality of forest products such as lumber and pulp. Of these, wood density is considered by some to be the single most important physical characteristic because it is an excellent predictor of strength, stiffness, hardness, and paper-making capacities. Accurately assessing...

Resource Type:

Dissertation