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The effects of tillage systems and seeding dates on grain yields of wheat (Triticum aestivum Vill., Host) on the Anatolian Plateau of Turkey

Creator:: Zinn, Thomas G.
Abstract:: Wheat (Triticum aestivum) is the major food crop produced on the Anatolian Plateau of Turkey where due to limited rainfall the farmers follow the traditional system of fallow farming. They are presently producing an average of 1.15 tons of grain per hectare during the crop year. This rate of production...
Resource Type:: Masters Thesis
Full Text:: THESIS OF THOMAS G. ZINN for the MASTER OF SCIENCE (Degree) in CROP SCIENCE presented on MARCH 1, 1978

Genetic variability for kernel hardness in two soft winter wheat (Triticum aestivum L.) cultivators

Creator:: Albahouh, Muhammed S.
Abstract:: To remain competitive in the international marketplace, soft white wheat cultivars grown in the Pacific Northwest must have consistent and predictable flour properties including kernel texture. As a consequence, there is a need to develop wheat cultivars for specific end uses. Wheat cultivars with very soft kernels are used largely...
Resource Type:: Masters Thesis
Full Text:: thank Dr Russ Karow and Dr David Thomas for serving in my graduate committee and providing their time

Pre-harvest sprouting tolerance of a synthetic hexaploid wheat (Triticum turgidum L. x Aegilops tauschii Coss.)

Creator:: Rosa, Andre Cunha
Abstract:: Pre-harvest sprouting in wheat costs farmers millions of dollars every year. Pre-harvest sprouting tolerance (PST) has minimized this problem, but improvement of PST is still necessary. Synthetic hexaploid wheats (synthetics) have been used as sources of genes coding for many useful traits. Two studies evaluated the PST of a synthetic...
Resource Type:: Masters Thesis
Full Text:: . David Thomas, Patrick Hayes, and Gregory Perry, members of my committee for their time and assistance

Estimates of genetic variability resulting from single, top, and double cross populations in durum wheat (Triticum turgidum L. var. durum)

Creator:: Abdennadher, Mourad
Abstract:: The success of a plant breeding program depends upon the availability of useable genetic diversity. Such diversity may be enhanced depending on the type of hybridization strategy employed. Segregating progenies resulting from F2 populations, a double cross, and a top cross were compared for the amount of useable genetic diversity...
Resource Type:: Masters Thesis
Full Text:: the preparation of this thesis. I sincerely thank Dr. Patrick M. Hayes, Dr. David R. Thomas, and Dr

Influence of planting density on spike size and grain yield in five winter wheat cultivars

Creator:: Wang, Shi Ping, 1956-
Resource Type:: Masters Thesis
Full Text:: graduate study and the preparation of this manuscript. Sincere thanks Drs. David Thomas, Chistopher Mundt

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:: . Broad and narrow sense heritability (H and H N. S..estimates and estimated genetic advanceB. sS(t

A comparison of three systems of phenotypic selection for grain yield in three spring barley populations

Creator:: Hayes, Patrick M.
Abstract:: Concerns regarding the most effective means of evaluating segregating generations of spring barley prompted this investigation. Three methods of selection were considered: bulk, pedigree, and single seed descent. F₆ lines derived by each method were grown in a replicated yield trial. The effectiveness of each method was measured in terms...
Resource Type:: Masters Thesis
Full Text:: consideration. The question was addressed by Martin et al. (1978), who grew four 6 generations of SSD

Heritability estimates and associations for protein content and grain yield involving four winter wheat crosses (Triticum aestivum Vill., Host)

Creator:: Solen, Polat
Abstract:: Four agronomically and genetically diverse winter wheat parents were utilized as the experimental organisms. Atlas 66 and NB 68513 were selected as cultivars with a high and stable protein content when grown under different environmental condidtions. They are intermediate for grain yield when grown in the Pacific Northwest. Yamhill and...
Resource Type:: Masters Thesis
Full Text:: analysis of variance using the formula suggested by Thomas and Kernkarrip (40). Narrow sense heritability

The inheritance of stem rust (Puccinia graminis graminicola) resistance in perennial ryegrass (Lolium perenne)

Creator:: Rose, Crystal A.
Abstract:: Three stem rust Puccinia graminis graminicola, resistant sources of perennial ryegrass, Lolium perenne, 4A, 48A, and 77A, were crossed in a partial diallel design with one susceptible source, MP-2, resulting in six crosses excluding reciprocals. The F1's and cloned parental populations were inoculated in the field and rated on a...
Resource Type:: Masters Thesis
Full Text:: often are relatively susceptible to pathogens, especially the plant rusts (Flor, 1971). Martin and

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
Full Text:: writing of this thesis. I wish to thank Dr. Thomas L. Jackson for his help and for the use of his plots

ScholarsArchive@OSU

The effects of tillage systems and seeding dates on grain yields of wheat (Triticum aestivum Vill., Host) on the Anatolian Plateau of Turkey

Genetic variability for kernel hardness in two soft winter wheat (Triticum aestivum L.) cultivators

Pre-harvest sprouting tolerance of a synthetic hexaploid wheat (Triticum turgidum L. x Aegilops tauschii Coss.)

Estimates of genetic variability resulting from single, top, and double cross populations in durum wheat (Triticum turgidum L. var. durum)

Influence of planting density on spike size and grain yield in five winter wheat cultivars

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

A comparison of three systems of phenotypic selection for grain yield in three spring barley populations

Heritability estimates and associations for protein content and grain yield involving four winter wheat crosses (Triticum aestivum Vill., Host)

The inheritance of stem rust (Puccinia graminis graminicola) resistance in perennial ryegrass (Lolium perenne)

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

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