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The effects of light on photosynthesis and rooting of leafy cuttings of Pisum sativum L.

Creator:: Davis, Tim D.
Abstract:: The effects of light incident on leafy cuttings is quite complex because' light influences several factors which may affect root formation. One effect of light is to influence the carbohydrate status of the cutting by influencing photosynthesis. The role of current photosynthate in the rooting of leafy cuttings is uncertain....
Resource Type:: Masters Thesis
Full Text:: Master of Science in Horticulture presented on April 24, 19 80 Title: The Effects of Light on

Selective filtering of light by coniferous forests and minimum light energy requirements for regeneration

Creator:: Atzet, Thomas
Abstract:: Spectroradiometric analyses were made to examine the light filtering capacity of coniferous forests and to establish the lower light energy limits for growth of Pseudotsuga menziesii (Mirb. ) Franco, Abies concolor (Gord. and Glend.) Lindi. and Pinus ponderosa Dougi. Visible energy(400-750 nm) was recorded at 48 points under four mixed...
Resource Type:: Masters Thesis

Effect of light quality and periodicity upon germination of Douglas-fir seed (Pseudotsuga menziesii (Mirb.) Franco) and on growth of Douglas-fir seedlings

Creator:: Johnson, Le Roy Curtis
Abstract:: A study on the effects of light quality and periodicity on the germination of Douglas-fir seed and the growth of Douglas-fir seedlings was conducted. Interest was focused on responses that could be measured and observed without biochemical assay. It was found that .Douglas-fir seed,s would respond to red-light treatments by...
Resource Type:: Masters Thesis
Full Text:: calculation) light of 700 mp. and longer. Light quality transmission curves for the cellophane filters in

The influence of light on tree growth

Creator:: Harris, Wayne
Resource Type:: Undergraduate Thesis
Full Text:: The influence of light on tree growth THE INFLUENCE OF

The effect of light intensity on the organic composition of marine phytoplankton diatoms

Creator:: Marmelstein, Allan
Abstract:: Investigation was made into the influence of changing light intensity on the organic and elemental composition of two species of marine diatoms, Ditylum brightwellii and Skeletonema costatum. Analysis was made of the relative changes in soluble and insoluble carbohydrate; polar, non-polar, and total lipid; amino acids; proteins; and total carbon,...
Resource Type:: Dissertation
Full Text:: ) Title: THE EFFECT OF LIGHT INTENSITY ON THE ORGANIC COMPOSITION OF MARINE Abstract Approved

Laboratory studies of periphyton production and community metabolism in lotic environments

Creator:: McIntire, C. David
Abstract:: See pdf
Resource Type:: Dissertation
Full Text:: candles of illumination from warm white, fluorescent tubes were designated as "light-adapted" communities

Light in relation to the growth of Douglas fir

Creator:: Hawkins, Leroy A.
Resource Type:: Undergraduate Thesis
Full Text:: Light in relation to the growth of Douglas Fir 5pRl> V

Photomorphogenic processes in the agricultural environment

Creator:: Ballaré, Carlos L.
Resource Type:: Dissertation
Full Text:: influences plant growth and development not only because it modifies the availability of light energy and

The effect of light intensity on Douglas-fir foliage quality : survival and development of Western spruce budworm

Creator:: Waddell, Karen L.
Abstract:: Foliage from Douglas-fir(var. glauca) seedlings grown under two light intensities was bioassayed to examine palatability to the western spruce budworm (Choristoneura occidentalis Free.). Samples were collected in Fall, Winter and early Spring to identify seasonal changes in host foliage, as evidenced by the response of spruce budworms. Fall collected foliage...
Resource Type:: Masters Thesis

Effects of nutrient and light limitation on mountain hemlock : susceptibility to laminated root rot

Creator:: Matson, P. A. (Pamela A.)
Abstract:: Mountain hemlock forests in the Oregon Cascades exhibit wave-form dieback resulting from infection by laminated root rot (Phellinus weirii). Although Phellinus remains viable in dead roots after the wave of dieback passes, many regenerating mountain hemlock forests do not become immediately reinfected. We measured at least a doubling of nitrogen...
Resource Type:: Dissertation

ScholarsArchive@OSU

The effects of light on photosynthesis and rooting of leafy cuttings of Pisum sativum L.

Selective filtering of light by coniferous forests and minimum light energy requirements for regeneration

Effect of light quality and periodicity upon germination of Douglas-fir seed (Pseudotsuga menziesii (Mirb.) Franco) and on growth of Douglas-fir seedlings

The influence of light on tree growth

The effect of light intensity on the organic composition of marine phytoplankton diatoms

Laboratory studies of periphyton production and community metabolism in lotic environments

Light in relation to the growth of Douglas fir

Photomorphogenic processes in the agricultural environment

The effect of light intensity on Douglas-fir foliage quality : survival and development of Western spruce budworm

Effects of nutrient and light limitation on mountain hemlock : susceptibility to laminated root rot

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