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Filtering by: Advisor Kronstad, Warren E. Remove constraint Advisor: Kronstad, Warren E. Degree Level Doctoral Remove constraint Degree Level: Doctoral

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A comparison of selected analyses for estimating environmental variation in early generations and advanced lines of wheat (Triticum aestivum L. em thell)

Creator:

Khan, Noor-ul Islam

Abstract:

This investigation was motivated by the introduction of the new nearest neighbour analyses which reportedly provided a better control of soil gradients than conventional experimental methods. Three nearest neighbour analyses and six other analyses were compared with the completely randomized design or the randomized complete block design in reducing the...

Resource Type:

Dissertation
A comparison of two methods of divergent mass selection for heading date in two winter wheat (Triticum aestivum L. em Thell) crosses

Creator:

Frederickson, Leslie John

Abstract:

Responses to two cycles of mass selection for heading date, followed by selfing or intermating, were studied in two diverse winter wheat (Triticum aestivum L. em. Thell) crosses. Selection was bidirectional, resulting in early and late populations for each mating system, cycle, and cross. The influence of mass selection for...

Resource Type:

Dissertation
A study of methods of parental evaluation using testers to predict subsequent progeny performance in winter wheat (Triticum aestivum L.)

Creator:

Alexander, William Larry

Abstract:

The major objective of this study was to determine why certain winter wheat cultivars, when hybridized, will produce a greater proportion of desirable plants in subsequent, segregating generations. Three winter wheat parents were chosen as the experimental material, based on their known performance as parents. Yamhill and Pullman Selection 101...

Resource Type:

Dissertation
Adaptability of winter wheat cultivars to dryland conditions and their response to water stress

Creator:

Keim, Don Lee

Abstract:

Winter wheat cultivars (Triticum aestivum) were evaluated for their response to water stress and adaptability to a wide range of moisture limited environments. Grain yield was analyzed for ten cultivars at six locations across four years. Regression of the cultivar mean on the year-location mean was used as a measure...

Resource Type:

Dissertation
Agronomic performance of six winter wheat dwarfing sources when crossed to isogenic lines for Norin 10 Rht loci

Creator:

Pedretti, Ricardo

Abstract:

Six genetically diverse dwarfing sources of winter wheat were compared to four isogenic lines for the height reducing genes Rht₁ and Rht₂. Parents and generations through the F₃ including backcrosses to the respective parents were analyzed. Seedling response to gibberellic acid and tests for allelism for plant height were employed...

Resource Type:

Dissertation
Agronomic potential and physiological performance of synthetic hexaploid wheat-derived populations

Creator:

del Blanco, Isabel Alicia

Resource Type:

Dissertation
Aluminum toxicity studies in rice (Oryza sativa L.)

Creator:

Martinez-Racines, Cesar P.

Abstract:

A nutrient solution technique developed for wheat was used to determine tolerance of rice cultivars to aluminum (Al) toxicity. Pre-germinated rice seed was placed on top of a screen and allowed to grow on the Al-free solution for 72-96 hours or until the primary root was 2-3 cms long. Seedlings...

Resource Type:

Dissertation
Assessment of genetic resistance to strawbreaker foot-rot (Pseudocercosporella Herpotrichoides) in selected winter wheat (Triticum aestivum L.) cultivars

Creator:

Encinas-Mungarro, Andres

Abstract:

Strawbreaker foot-rot is a major limiting factor to cost efficient winter wheat production in the Pacific Northwest. Development of resistant cultivars has been hindered by the lack of adequate levels of genetic resistance and screening techniques which can consistently detect desired genotypes. Studies were conducted to determine if the reported...

Resource Type:

Dissertation
Assessment of resistance and inheritance to Barley Yellow Dwarf Virus disease (BYDV) in five wheat cultivars (Triticum aestivum L.)

Creator:

Tola, Jaime

Abstract:

Barley Yellow Dwarf Virus (BYDV) is a major disease of wheat. Unfortunately, unlike barley where the Yd2 gene provides adequate levels of resistance, the situation in wheat is more complex. This study was designed to provide information regarding: 1) evaluation of methods of measuring resistance among selected cultivars; 2) identification...

Resource Type:

Dissertation
Chemical and genetic evaluation of high lysine and protein in selected barley crosses

Creator:

Helm, James Henry, 1944-

Abstract:

Four agronomically and genetically diverse spring barleys were used in a crossing program to study the inheritance of lysine in barley and to determine its possible association with certain agronomic and morphological characters. The cultivar Hiproly was used as the source of high protein and lysine. Characters measured included plant...

Resource Type:

Dissertation

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Academic Affiliation

Crop Science22
Agronomic Crop Science11
Crop and Soil Science8
Farm Crops4

Advisor

Kronstad, Warren E.[remove]50
Rajaram, Sanjaya1

Commencement Year

Commencement Year range begin – Commencement Year range end

Current results range from 1968 to 2000

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Committee Member

Frakes, R. V.5
Thomas, David5
Hayes, Patrick4
McCuistion, Willis L.4
Metzger, R. J.4
more Committee Members »

Creator

Abi Antoun, Michel1
Alcala de Stefano, Maximino1
Alexander, William Larry1
Ammar, Karim1
Bedoshvili, David1
more Creators »

Date

Date range begin – Date range end

Current results range from 1967 to 1999

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Decade

1990-199911
1980-198918
1970-197917
1960-19694

Degree Field

Crop Science29
Agronomic Crop Science11
Genetics5
Farm Crops4
Crop and Soil Science1

Degree Level

Doctoral[remove]50

Degree Name

Doctor of Philosophy (Ph.D.)50

Language

English [eng]50

Non-Academic Affiliation

Oregon State University. Graduate School50

Peer Reviewed

No50

Resource Type

Dissertation50

Rights Statement

Copyright Not Evaluated49
In Copyright1

Subject

Wheat10
Wheat -- Genetics8
Wheat -- Breeding6
Barley4
Winter wheat -- Genetics4
more Subjects »

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