Index Catalog // ScholarsArchive@OSU

Creator:: DeYoe, David R.
Abstract:: Definitive evidence for the occurrence and seasonal variation of indole-3 -acetic acid (IAA) in shoots 0 DougLas-fir (Pseudotsuga rrienztesii (Mirb. ) Franco) was sought. Collections obtained in December and June were extracted by solvent using methanol arid diethyl ether arid by certtrtfugatiori. Extraction by ceritrifugation appeared to be twice as...
Resource Type:: Masters Thesis

Creator:: Whiting, Elizabeth Cameron
Abstract:: Tap-root wounds frequently occur on seedlings during lifting in forest tree nurseries. Data are needed to clarify guidelines for culling wounded seedlings. Two-year-old bareroot Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) seedlings were wounded by hand on the tap-root to lengths of either 3/8, 1, or 3 inches. Wounded seedlings were used...
Resource Type:: Masters Thesis

Creator:: Thompson, Barbara Ellen
Abstract:: Three experiments were conducted on containerized seedlings to examine the short-term and long-term effects of environment on the root regeneration potential, and to examine the fate of the current photosynthate and its relationship to the root regeneration potential. The short-term effects were studied first in a 3x3x2 factorial experiment comprising...
Resource Type:: Masters Thesis

Creator:: Forry, Keith R.
Abstract:: The goal of this study was to evaluate the ability of two seedling quality evaluation methods to predict the field survival of Douglas-fir (Pseudotsuga menziesii) seedlings. The starch reserves in seedlings have been suggested as a possible predictor of seedling quality. Starch reserves have been shown to decrease during cold...
Resource Type:: Masters Thesis
Full Text:: Roots and the Osmotic Concen- tration of Expressed Xylem Sap as Predictors of Douglas-Fir Seedling

Creator:: Hipkins, Valerie D.
Abstract:: The physiological condition of a seedling often determines its ability to survive when planted. However, physiological damage is difficult to determine from external measurement or observation, because a healthy looking seedling can be of poor quality (quality is defined as the ability of a seedling to survive when outplanted). Methods...
Resource Type:: Masters Thesis

Creator:: Chien, Ching-te
Abstract:: Endogenous concentrations of indole-3-acetic acid (IAA) and cytokinins were compared to the tendency for plagiogravitropjc growth in rooted stein cuttings of Douglas-fir. A chromatographic method was developed for the purification and quantitation of trace levels of IAA. Two elutions with reverse-phase high performance liquid chromatography (HPLC) using a fluorescence detector...
Resource Type:: Masters Thesis

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