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Filtering by: Has journal Euphytica Remove constraint Has journal: Euphytica Degree Field Agronomic Crop Science Remove constraint Degree Field: Agronomic Crop Science

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Identification of species and varieties of ryegrass (Lolium spp.)

Creator:

De Barros, Manoel Bernardo

Abstract:

The objective of this study was to investigate ryegrass seedling characteristics that, by themselves, or combined with presently known characters, could improve varietal identification tests. Thirteen characters were studied on 30 varieties of Lolium multiflorum Lam., L. perenne L., L. rigidum Gaud, and L. hybridum Hausskn., including leaf size and...

Resource Type:

Masters Thesis
Compensating effects and gene action estimates for the components of grain yield in winter wheat (Triticum aestivum, L. em Thell)

Creator:

Abi-Antoun, Michel

Abstract:

Five winter wheat cultivars and their diallel crosses were evaluated for plant height, harvest index, deading-maturity duration, the components of yield, (spikes per plant, spikelets per spike, kernel weight and kernels per spikelet)and total plant yield. Two diverse locations, Moro, a dryland site (250 mm annually) located in central Oregon...

Resource Type:

Dissertation
Combining ability and associations of agronomic traits involving three sources of dwarfism in wheat (Triticum aestivum, L. em Thell)

Creator:

Maya de Leon, Jose Luis

Abstract:

Three genetically different dwarf cultivars of spring wheat were evaluated as potential sources of short stature to use in a wheat improvement program. The study involved a five parent diallel cross which included a semidwarf, a standard height and three dwarf cultivars. The genetic sources of dwarfism included a Norma...

Resource Type:

Dissertation
Factors associated with stand establishment and subsequent grain yield of seven wheat cultivars and selected progeny (Triticum aestivum, L em thell) when grown under three diverse environments

Creator:

Vahabian, Mohammad Ali

Resource Type:

Dissertation
Meiotic chromosome behavior in two tall fescue (Festuca arundinacea Schreb.) genotypes and their sterile hybrid

Creator:

Vásquez, Raul Moreno

Abstract:

Two diverse genotypes of tall fescue, Festuca arundinacea Schreb (6X=42), with normal fertility, produced upon intercrossing, vigorous F ₁ hybrid plants that were sterile. One parent genotype (P₁) was from P. I. 234-906, introduced from Switzerland and the other (P₉) was an introduction from Turkey, P. I. 174-209. P₁ and...

Resource Type:

Dissertation
Estimates of genetic variance and heterosis in F₁ winter x spring barley crosses (Hordeum vulgare, L.)

Creator:

Harrabi, Moncef Mohamed

Abstract:

Four winter and four spring barley cultivars along with their F₁ hybrids were grown on the Hyslop Agronomy Farm near Corvallis, Oregon, a high rainfall site (over 1000 mm annually) located in the Willamette Valley. The experiment consisted of four replications. Ten seeds of each F₁ and parents were seeded...

Resource Type:

Masters Thesis
Influence of aluminum toxicity in intergeneric crosses of wheat and rye

Creator:

Lopez-Benitez, Alfonso

Abstract:

A technique previously designed to screen wheat cultivars and segregating populations for tolerance to Aluminum utilizing nutrient solutions in growth chambers was found to be efficient in differentiating among cultivars of wheat, rye, and triticale for tolerance to Al under greenhouse conditions. A 5°C increase in temperature, from 25°C to...

Resource Type:

Dissertation
Evaluation of early generation testing in a diallel cross involving four winter wheat cultivars (Triticum aestivum Vill., host)

Creator:

Daaloul, Abderrazak

Abstract:

Factors which influence the effectiveness of making early generation selections within bulk populations were investigated. Material utilized included the parents, F₁, and F₂ through F₅ bulk populations resulting from a diallel cross. Information concerning the response of two traits, plant height and grain yield, was obtained for these populations at...

Resource Type:

Masters Thesis
Heterosis and inbreeding in the progeney of genetically diverse parental clones of Festuca arundinacea Schreb

Creator:

Johnson, Blaine Earl

Abstract:

The response of maturity, vigor, plant spread, plant height, three forage harvest yields, and total forage yield to heterosis and inbreeding was studied in tall fescue. Parent clones selected for diverse anthesis date, origin, and morphology were separated into two groups based on anthesis date, those having early maturity and...

Resource Type:

Masters Thesis
Genetic and environmental factors influencing the effectiveness of early generation selection in a diallel cross involving four winter wheat cultivars (Triticum aestivum Vill., host)

Creator:

Daaloul, Abderrazak

Resource Type:

Dissertation

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Academic Affiliation

Agronomic Crop Science19

Advisor

Kronstad, Warren E.10
Grabe, Don F.2
Bolton, Floyd E.1
Chilcote, D. O.1
Chilcote, David O.1
more Advisors »

Commencement Year

Commencement Year range begin – Commencement Year range end

Current results range from 1972 to 1978

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Committee Member

Metzger, R. J.3
Chilcote, W. W.2
Frakes, R. V.2
Powelson, M. L.2
AliNiazee, M. T.1
more Committee Members »

Creator

Daaloul, Abderrazak2
Abi Antoun, Michel1
Boyce, Kevin Gilbert1
de Barros, Manoel Bernardo1
Firat, Ahmet Ertug1
more Creators »

Date

Date range begin – Date range end

Current results range from 1972 to 1978

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Decade

1970-197919

Degree Field

Agronomic Crop Science[remove]19

Degree Level

Doctoral11
Master's8

Degree Name

Doctor of Philosophy (Ph.D.)11
Master of Science (M.S.)8

Language

English [eng]19

License

All rights reserved1

Non-Academic Affiliation

Oregon State University. Graduate School19

Peer Reviewed

No19

Resource Type

Dissertation11
Masters Thesis8

Rights Statement

Copyright Not Evaluated18
In Copyright1

Subject

Fescue3
Wheat3
Wheat -- Breeding3
Wheat -- Research2
Alfalfa1
more Subjects »

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