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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
Full Text:: Compensating effects and gene action estimates for the

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
Full Text:: ) Title: EVALUATION OF EARLY GENERATION TESTING IN A DIALLEL CROSS INVOLVING FOUR WINTER WHEAT CULTIVARS

Asulam in western Oregon pastures : broadleaf dock control and tolerance of important grass and legume species

Creator:: Majek, Bradley A.
Abstract:: In previous research in Europe, asulam (methyl sulfanilylcarbamate) was found to be a potentially useful herbicide for controlling broadleaf dock Rumex obtusifolius L. ) in permanent pastures. Asulam was also reported to have a low margin of safety when used on common pasture species. Field studies were conducted in western...
Resource Type:: Masters Thesis
Full Text:: SPECIES Abstract approved: Redacted for Privacy Dr. A. P. PliSpgby In previous research in Europe

Alfalfa cutting management in the Columbia Basin

Creator:: Suttner, Donald Lee
Abstract:: Field studies to determine appropriate cutting management regimes consistent with yield, quality, and persistence of stand were conducted on several alfalfa varieties in the Columbia Basin region of Oregon. Two groups of treatments, including consecutive cuts at the same stage of maturity and cuts made at varying maturities, were imposed...
Resource Type:: Dissertation
Full Text:: . Results with Anchor over a two year period indicated consistently high yields of dry matter and protein

Genetic variability and association between agronomic and quality characteristics in twenty-nine female genotypes of Humulus lupulus L.

Creator:: Roberts, Donald Day
Abstract:: The genetic variability in and association between 14 traits that affect maturity, yield, and chemical properties of its product. The plant characters measured were: vigor, flowering date, harvest date, yield, lateral length, nodes per lateral, cones per lateral, cones per vine, cone weight. Alpha-acid and beta-acid content of the cone,...
Resource Type:: Dissertation
Full Text:: heritability, and expected gains indicated there was a large genetic potential for improvement of most traits

Physiology, quality, and agronomic performance of snap beans (Phaseolus vulgaris L.) and spring wheat (Triticum aestivum L.) as affected by environment and several plant growth regulators

Creator:: Hile, Mahlon Malcolm Schallig
Abstract:: Experiments were conducted to determine the effect of environment and several plant growth regulators on the physiology, quality, and agronomic performance of snap beans (Phaseolus vulgaris L. ) and spring wheat (Triticum aestivum L. ). The potassium salts of naphthenic acid and cyclohexanecarboxylic acid, received particular attention. Application of potassium...
Resource Type:: Dissertation
Full Text:: x 5. 7) by the method of Nelson and Som- mers (1973). A bulk sample was prepared for each treatment

Association and inheritance of earliness and winterhardiness in four winter x spring wheat crosses (Triticum aestivum Vill., Host)

Creator:: Yakar, Kamil
Abstract:: The purpose of this study was to determine the nature and amountof genetic variation and possible associations between winterhardinessand earliness in winter x spring wheat crosses.Four winter wheat cultivars selected for differences in earlinessand winterhardiness were crossed with a nonhardy, day length insensitivespring wheat cultivar. The following year, experiments containing...
Resource Type:: Masters Thesis
Full Text:: wheat varieties were each crossed reciprocally with Inia 66 to gene rage the F 1 generation. A portion

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
Full Text:: production. Their research stemmed from Wiebe's plan for production of hybrid barley utilizing a gene

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
Full Text:: generation selection could be practiced after measuring changes in gene frequencies for a series of simply

Heritability for perloline, nitrogen, and digestibility characteristics in tall fescue (Festuca arundinacea, Schreb.) single-crosses grown in two locations

Creator:: Watson, Clarence Ellis
Abstract:: Tall fescue often results in poor liveweight gains. This may be accounted for by variations in perloline content, nitrogen content, or digestibility of the plant. Two groups of tall fescue plants were examined for each of these traits. These groups consisted of (a) fifteen single-crosses of a six parent diallel...
Resource Type:: Dissertation
Full Text:: as environments indicated a large amount of nonadditive gene action for perloline content, but there

ScholarsArchive@OSU

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

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

Asulam in western Oregon pastures : broadleaf dock control and tolerance of important grass and legume species

Alfalfa cutting management in the Columbia Basin

Genetic variability and association between agronomic and quality characteristics in twenty-nine female genotypes of Humulus lupulus L.

Physiology, quality, and agronomic performance of snap beans (Phaseolus vulgaris L.) and spring wheat (Triticum aestivum L.) as affected by environment and several plant growth regulators

Association and inheritance of earliness and winterhardiness in four winter x spring wheat crosses (Triticum aestivum Vill., Host)

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

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

Heritability for perloline, nitrogen, and digestibility characteristics in tall fescue (Festuca arundinacea, Schreb.) single-crosses grown in two locations

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