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Creator:: Pope, Walter William
Abstract:: Rates of apparent net photosynthesis were measured on a sample of Rocky Mountain Douglas-fir consisting of eleven one-year-old seedlings from each of the thirteen different seed sources. Secondary observations of needle length, needle weight, and needle number were also obtained. A formula derived through step-wise multiple regression of the secondary...
Resource Type:: Masters Thesis

Creator:: Sugano, Albert Itsuki
Abstract:: The effect of low temperatures given at different times and duration upon the time of bud burst, shoot elongation, number of needles developed and needle length in Douglas-fir plants from the Oregon Cascades and three coastal areas ranging from Washington to California were determined. The plants were grown outside in...
Resource Type:: Masters Thesis

Creator:: Dinus, Ronald John
Abstract:: The photoperiodic responses of Douglas-fir (Pseudotsuga menziesii (Mirb,) Franco) seedlings grown from seed collected at Salmon Arm, British Columbia, Coconino National Forest, Arizona, and Southern Vancouver Island were studied. Plants were grown for 100 days under a 12-hour photoperiod at 200 C. The effective length of the daily light and...
Resource Type:: Masters Thesis

Creator:: Rietveld, W. J.
Abstract:: Populations of Douglas-fir seedlings from interior British Columbia, Vancouver Island, and Arizona received six bi-weekly foliar spray applications of the growth regulators IAA, CCC, and B-995, each at three concentration levels under controlled environmental conditions. Large differences were found among the three populations in their responses to the growth regulators....
Resource Type:: Masters Thesis

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