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Filtering by: Decade 1980-1989 Remove constraint Decade: 1980-1989 Degree Field Crop Science Remove constraint Degree Field: Crop Science Resource Type Masters Thesis Remove constraint Resource Type: Masters Thesis

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Estimates of heterosis for five agronomic traits in selected winter x spring and winter x winter wheat crosses (Triticum aestivum L. em Thell)

Creator:

Brajcich, P.

Abstract:

Concern regarding the lack of genetic variability and the apparent yield plateau reached in wheat breeding have prompted this investigation. The systematic crossing of spring and winter wheat types which have evolved to form somewhat different gene pools, may provide a source of additional usable genetic variability for future yield...

Resource Type:

Masters Thesis
Grazing duration effects on seed yield of annual ryegrass (Lolium multiflorum L.)

Creator:

Young, William C. (William Clyde)

Abstract:

Spring grazing of annual ryegrass (Lolium multiflorum L.) seed fields with sheep is a common practice in the Willamette Valley of Oregon. However, the effect of grazing on seed yield in Oregon has not previously been investigated. This experiment was designed to determine the effects of duration of spring grazing...

Resource Type:

Masters Thesis
Estimates of heterosis in winter/winter, winter/spring, and spring/spring crosses of barley (Hordeum vulgare L.)

Creator:

Oakley, Stephen Roland

Abstract:

Previous work indicated a substantial heterotic expression for grain yield existed within winter/spring hybrids of barley, This research was a continuation for the comparison of the expression of heterosis within winter/spring hybrids to the heterotic effect produced among the winter and among the spring parents. The F₁ and F₂ progenies...

Resource Type:

Masters Thesis
Floral induction and reproductive development in selected perennial ryegrass cultivars

Creator:

Gangi, Ali Salih

Resource Type:

Masters Thesis
Dormancy of Kentucky bluegrass (POA pratensis L.) seed : the effect of germination environment, hormone applications, and hulling on seed germination

Creator:

Hostetler, Mary

Resource Type:

Masters Thesis
The effect of methods and dates of planting on establishment, growth and yield potential of Papaver bracteatum Lindl

Creator:

Haines, Kenneth

Resource Type:

Masters Thesis
Growth and reproductive development in selected cultivars of Kentucky bluegrass given different durations of exposure to floral inductive conditions

Creator:

Turner, J. Kevin

Abstract:

Kentucky bluegrass (Poa pratensis L.) cultivars are known to differ quantitatively in their photothermal floral inductive requirements. The extent to which these requirements are met influences the potential for subsequent panicle exsertion. A better understanding of the inductive requirements as they vary among cultivars would aid in the selection and...

Resource Type:

Masters Thesis
Influence of phosphorous and lime application on root growth and grain yield of two winter wheat cultivars (Triticum Aestivum, L em thell)

Creator:

Boulger, Mary Caroline

Abstract:

Differential grain yield response of two winter wheat cultivars ('Yamhill' and'McDermid) when grown on acid soils prompted this investigation. Root samples were taken at two soil depths at late tillering and anthesis from plots established on an acid nonpareil soil in Douglas County, Oregon. The soil pH was 5.2-5.3 and...

Resource Type:

Masters Thesis
Effect of late foliar applications of urea on protein, hardness, and yield of winter wheat cultivars (Triticum aestivum L.)

Creator:

Altman, David W.

Abstract:

The response of cultivars of winter wheat to foliar applications of urea was examined for grain protein content, yield, and kernel hardness. The objectives of this study were to measure the effect of urea on these three traits in diverse environments and to explain how potential responses could occur by...

Resource Type:

Masters Thesis
The effect of harvest date and pre-storage drying methods on capsule thebaine yield, seed oil yield, and seed germination of two accessions of Papaver bracteatum Lindl.

Creator:

Seddigh, Majid

Abstract:

A field study was conducted in 1978 and 1979 at the Hyslop Crop Science Field Laboratory near Corvallis, Oregon, to determine the optimum capsule harvest date of Papaver bracteatum Lind. for thebaine yield and oil yield, while maintaining an acceptable percentage of seed germination. Accessions PI 383309 and PI 381607...

Resource Type:

Masters Thesis

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Academic Affiliation

Crop Science96

Advisor

Kronstad, Warren E.20
Appleby, Arnold P.12
Grabe, Don F.12
Mccuistion, Willis L.8
Bolton, Floyd E.6
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Commencement Year

Commencement Year range begin – Commencement Year range end

Current results range from 1980 to 1990

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Committee Member

Petersen, R. G.7
Chambers, Kenton L.4
Chilcote, David4
McCuistion, W. L.4
McCuistion, Willis4
more Committee Members »

Creator

Agamennoni, Raul Jose1
Ait Amer Meziane, Aomar1
Alba, Elena L.1
Altman, David W.1
Apley, Kathryn Lynne1
more Creators »

Date

Date range begin – Date range end

Current results range from 1980 to 1989

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Decade

1980-1989[remove]96

Degree Field

Crop Science[remove]96

Degree Level

Master's96

Degree Name

Master of Science (M.S.)96

Language

English [eng]96

Non-Academic Affiliation

Oregon State University. Graduate School96

Peer Reviewed

No96

Resource Type

Masters Thesis[remove]96

Rights Statement

Copyright Not Evaluated95
In Copyright1

Subject

Wheat11
Herbicides5
Wheat -- Genetics5
Ryegrasses4
Wheat -- Breeding4
more Subjects »

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