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Response of Canada milkvetch (Astragalus canadensis var. mortonii (Nutt.) Wats.) to range and forest improvement practices in Northeastern Oregon

Creator:: Wood, Benjamin William
Abstract:: The response of Canada milkvetch (Astragalus canadensis var. mortonii) to range and forest improvement practices was studied on a stand of mixed-coniferous forest which was clear -cut and burned in 1963 and 1964, respectively. The field studies were conducted on the Hall Ranch of the Eastern Oregon Experiment Station during...
Resource Type:: Dissertation
Full Text:: investigated. Studies wer e also made on the effects of grazing as they influence flowering, plant height

Techniques and media for excised tip culture of Vinifera cultivars

Creator:: Subhanij, Thiravira
Abstract:: Excised apical stem tips (2-5 mm) of grape cultivars grew well on Murashige and Skoog's (1962) medium for tobacco callus. Additions of glycine were not essential but gave a slight stimulus to growth. Naphthalene acetic acid slightly reduced growth rates but reductions were not statistically significant. Kinetin and coconut milk...
Resource Type:: Masters Thesis
Full Text:: degradative effects of disease. The technique, media, and art of culturing such plant material thus

The influence of variety, plant population and planting date on corn silage production

Creator:: Samphantharak, Krisda
Abstract:: The influence of variety, plant population, and planting date on corn silage production was studied at Hyslop Agronomy Farm, Corvallis, Oregon. The corn plants were grown under irrigation with 300 pounds per acre of 16-20-0 (N-P₂0₅-K₂0) and 240 pounds of urea, providing a total nitrogen application of 158 pounds per...
Resource Type:: Masters Thesis
Full Text:: INFLUENCE OF VARIETY, PLANT POPULATION AND PLANTING DATE ON CORN SILAGE PRODUCTION Redacted for

Translocation of photosynthates in soybeans (Glycine Max. (L) Merr. cv. Wilkin) as affected by soil water potential and soil temperature

Creator:: Ekasingh, Methi
Resource Type:: Dissertation
Full Text:: plant parts. At 24 hours, 14.8, 8.1 and 6.0 percent of total dpm/mg were in the tips at -0.35, -2.5

Vegetation and animal responses to grazing crested wheatgrass at three intensities and two seasons in southern Idaho

Creator:: Sharp, Lee Ajax
Abstract:: Land useable for livestock grazing in the western United States is diminishing because of spreading municipalities, irrigation developments, highway construction, recreational demands and withdrawals. Concurrently, the demand for livestock and livestock products is increasing because of a rapidly growing population. As a result, production from the grazing land that remains...
Resource Type:: Dissertation
Full Text:: plant and animal responses under three intensities of grazing (light, moderate or heavy) in two

CER and leaf characteristics of four tall fescue (Festuca arundinacea Schreb.) selections differing in forage yield

Creator:: Cohen, Cynthia Joy
Abstract:: Gas exchange, leaf area development, leaf anatomy and stomatal characteristics of four tall fescue selections differing in forage yield were examined to provide further insight into characteristics associated with yield differences of these selections. Winter-growing TFM 26 and TFM 16, the highest and lowest-yielding selections, respectively, and summer-growing selections TFK...
Resource Type:: Masters Thesis
Full Text:: La rate. Leaf width, therefore, mer- its further consideration in forage physiology and breeding

Environmental and genetic factors affecting seed set in Dactylis glomerata L.

Creator:: West, David L.
Abstract:: Field, growth chamber, and greenhouse studies were carried out to evaluate factors that cause low seed set in Dactylis Glomerata L. The variety, 'Latar', and the parental clones of the variety, 'Pennlate', were studied in detail. Floral anatomy investigations indicated that 98 percent of Dactylis flowers opened at Corvallis in...
Resource Type:: Dissertation
Full Text:: suggestions on research in Dactylis. Dr. Robert Fore in making plant materials available at Hyslop Farm

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
Full Text:: October 1977 Commencement June 1978 APPROVED: Redacted forPrivacy Professor of Plant Breeding in

Influence of chelating agents on genetic recombination of Zea mays L.

Creator:: Ihrke, Charles Albert
Abstract:: Crossover frequencies for seven selected regions on five chromosomes of maize were measured to ascertain the effect of chelating agents on recombination. Ethylenediamine tetraacetic acid, EDTA, and dimethyl sulfoxide, DMSO, were used in three concentrations singly, and in all combinations. Plants heterozygous for for linked genes governing seed and seedling...
Resource Type:: Dissertation
Full Text:: MATERIALS AND METHODS Plant Materials 21 Chemical Treatments 22 Methods of Determining Recombinant Types 25

The biology and behavior of the alkali bee Nomia melanderi Cockerell (Hymnoptera: Apoidea)

Creator:: Hackwell, Glenn Alfred
Abstract:: Nomia melanderi Cockerell is one of the most efficient pollinators of alfalfa in Eastern Oregon. Emergence begins in June, usually reaches its peak in early July, and may continue into early August. Male emergence precedes female emergence by four or five days. For the first few weeks of this time,...
Resource Type:: Dissertation
Full Text:: other plant species. In view of this, the alkali bee can be classed as an oligolectic species as

ScholarsArchive@OSU

Response of Canada milkvetch (Astragalus canadensis var. mortonii (Nutt.) Wats.) to range and forest improvement practices in Northeastern Oregon

Techniques and media for excised tip culture of Vinifera cultivars

The influence of variety, plant population and planting date on corn silage production

Translocation of photosynthates in soybeans (Glycine Max. (L) Merr. cv. Wilkin) as affected by soil water potential and soil temperature

Vegetation and animal responses to grazing crested wheatgrass at three intensities and two seasons in southern Idaho

CER and leaf characteristics of four tall fescue (Festuca arundinacea Schreb.) selections differing in forage yield

Environmental and genetic factors affecting seed set in Dactylis glomerata L.

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

Influence of chelating agents on genetic recombination of Zea mays L.

The biology and behavior of the alkali bee Nomia melanderi Cockerell (Hymnoptera: Apoidea)

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