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Confidence limits for fluoresence tests of ryegrass (Lolium sp.)

Creator:: Copeland, L. O. (Lawrence O.), 1936-
Abstract:: Studies were conducted to determine the variability existing in repeated fluorescence tests of annual and perennial ryegrass (Lolium multiflorum and L. perenne, respectively). Sources of variation considered were within-sample error, among-sample error, among-germinator error, and among-laboratory error. These were studied independently and the variation in each was compared to the...
Resource Type:: Masters Thesis
Full Text:: subrnitted to OREGON STATE UNIVERSITY in partial fulfillrnent of the requirements for the degree of

A comparison of plant characteristics of annual ryegrass (Oregon), Lolium multiflorum Lam., and Linn perennial ryegrass, Lolium perenne L.

Creator:: Rosell, C. H.
Abstract:: Studies were conducted to establish some characters which could be used, either in the field or in the laboratory, to differentiate between annual ryegrass (Oregon), Lolium multiflorum Lam. , and Linn perennial ryegrass, Lolium perenne L. Vernation, percentage of glumes covering the spikelets, and height of seedlings seem to be...
Resource Type:: Masters Thesis
Full Text:: . 1963. 15. Oregon. State University. Extension Service, Seed Certifica- tion Project. Summary of

Seed development in monogerm sugar beets (Beta vulgaris L.) as influenced by certain nutrients

Creator:: Schweitzer, Leland Ray
Abstract:: The influence of several fertilizer elements on the occurrence of underdeveloped seeds in monogerm sugar beets (Beta vulgaris L.) was studied. Lime (CaCO₃), nitrogen, phosphorus and potassium fertilizer applications were made to sugar beet seed plots at two locations in the Willamette Valley, Oregon. Seed produced from each treatment was...
Resource Type:: Masters Thesis
Full Text:: Certain Nutrients by Leland Ray Schweitzer A THESIS submitted to Oregon State University in partial

Variability of morphological and chemical quality characteristics in flowers of male hops, Humulus lupulus L.

Creator:: Brooks, Stanley Nelson
Resource Type:: Dissertation
Full Text:: to OREGON STATE UNIVERSITY in partial fulfillment of the requirements for the degree of

A comparison of four methods of sampling small seeds

Creator:: Grisez, John Patrick
Abstract:: Sampling studies were conducted to compare the efficiency of the four officially recommended methods of sampling small seeds: automatic sampling--at two sampling speeds, hand sampling, Nobbe tier sampling, and stick trier sampling. Synthetic lots of orchard-grass, ryegrass, Kentucky bluegrass, and alfalfa seed were prepared containing known numbers of the common...
Resource Type:: Masters Thesis
Full Text:: METHODS OT' SAMPLING SMALL SEEDS by John Patrick Grisez A THESIS subrriitted to Oregon State

Automatic sampling for seed analysis

Creator:: Knudson, Larry Andrew
Abstract:: Experiments were designed to reveal the accuracy and precision of four types of automatic sampler prototypes after initial testing indicated that the single tube vibrator sampler was not drawing a complete cross section of the seed flow in a vertical column. These experiments compared the automatic samplers with the trier...
Resource Type:: Masters Thesis
Full Text:: LARRY ANDREW KNUDSON A THESIS submitted to OREGON STATE UNIVERSITY in partial fulfillment of

Germination potential in monogerm seed of Beta vulgaris L.

Creator:: TeKrony, Dennis M.
Abstract:: The objective of this study was to investigate the low seed germination of 12 varieties of Oregon grown monogerm sugar beet, Beta vulgaris L., using several methods to determine the germination potential. The methods were: (1) X-ray radiograph examination, (2) standard laboratory germination following official rules, (3) laboratory germination by...
Resource Type:: Masters Thesis
Full Text:: VULGARIS L. by Dennis Merlin TeKrony A THESIS submitted to OREGON STATE UNIVERSITY in partial

Measurement of outcrossing in Lolium spp. as determined by fluorescence tests

Creator:: Copeland, L. O. (Lawrence O.), 1936-
Abstract:: Research was conducted to determine the distance and amount of outcrossing between varieties of highly fluorescent annual ryegrass (Lolium multiflorum Lam.) and low-fluorescing perennial ryegrass (Lolium perenne L.). Studies were conducted under both spaced-plant and seed production field conditions. Fluorescence tests on seed collected from low-fluorescing perennial ryegrass at successive...
Resource Type:: Dissertation
Full Text:: Oregon State University in partial fulfillment of the requirements for the degree of Doctor of

Seed development and germination of monogerm sugar beets (Beta vulgaris L.) as affected by maturity

Creator:: TeKrony, Dennis M.
Abstract:: Maturation rates of monogerm sugar beet seed grown in Western Oregon were measured quantitatively to determine attainment of maximum seed development and germination. Seed was collected at various intervals after anthesis from two hybrid varieties representing the extremes in resistance (hard bolting) and susceptibility (easy bolting) to seedstalk development. The...
Resource Type:: Dissertation
Full Text:: by Maturity by Dennis Merlin TeKrony A THESIS submitted to Oregon State University in partial

Comparison of rooting media and methods in assessing survival of propagules of tall fescue (Festuca arundinacea, Schreb.)

Creator:: Miltimore, James Earl
Resource Type:: Masters Thesis
Full Text:: EARL MILTIMORE A THESIS 8ubrnitted to OREGON STATE COLLEGE In partial fulfillment of the

ScholarsArchive@OSU

Confidence limits for fluoresence tests of ryegrass (Lolium sp.)

A comparison of plant characteristics of annual ryegrass (Oregon), Lolium multiflorum Lam., and Linn perennial ryegrass, Lolium perenne L.

Seed development in monogerm sugar beets (Beta vulgaris L.) as influenced by certain nutrients

Variability of morphological and chemical quality characteristics in flowers of male hops, Humulus lupulus L.

A comparison of four methods of sampling small seeds

Automatic sampling for seed analysis

Germination potential in monogerm seed of Beta vulgaris L.

Measurement of outcrossing in Lolium spp. as determined by fluorescence tests

Seed development and germination of monogerm sugar beets (Beta vulgaris L.) as affected by maturity

Comparison of rooting media and methods in assessing survival of propagules of tall fescue (Festuca arundinacea, Schreb.)

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