Digital Commons Network^™

Polymerization Of Tobacco Mosaic Virus, Fabian Crespo V.

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

An organic chemical condensing reagent, 1-cyclohexyl-3-(2-morpholinoethyl)-carbodiimide metho-p-toluene sulfonate (CMC) was tested for effectiveness in inducing polymerization of short lengths of tobacco mosaic virus (TMV) nucleoprotein particles isolated from systemically infected Turkish tobacco leaves. It appeared that the chemical induced the formation of phosphodiester linkages between the viral RNA helices in the joining nucleoprotein fragments. Because the polymerization reaction liberates a hydroxyl ion with each joining event the kinetics of the polymerization can be followed with time using a pH meter. The number of hydroxyl ions liberated is equal to the number of polymerizations. Physical evidence of polymerization was obtained by …

Field Observations On The Biology Of Mimulus Guttatus Dc. In Yellowstone National Park, Wyoming, Barbara L. Rice

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The response of Mimulus guttatus DC. to its unusual thermal habitat in Yellowstone Park is described. Although populations within the park are usually observed in thermal areas, no evidence indicates that they are restricted to thermal soils. The median temperature for soils of natural populations is about 26 C. Populations are distributed in both acidic and basic thermal areas. Success of the species in the thermal soils is facilitated by rapid vegetative growth, allowing fluctuation in population size or position with changes in soil temperature. Water availability is a critical limiting factor in distribution and lack of water tends to …

Investigations Of Unusual Curly Top Symptoms In Grafted Tomato Plants And Early Leafhopper Feeding Effects Upon Tomato Seedlings, Donald Eldon Gardner

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

To determine possible unusual effects of resistant plants upon symptom expression of curly top disease in susceptible tomato plants (Lycopersicon esculentum Mill.), tops of susceptible plants were grafted to lower stems and roots of resistant plants and inoculated. The resistant plants used were wild relatives of L. esculentum: L. peruvianum var. dentatum Dun. and L. peruvianum var. humifusum C. H. Mul. Reciprocal grafts, in which tops of dentatum plants were grafted to lower stems and roots of L. esculentum, were also made and inoculated.

External symptoms in the grafted plant tops were observed and compared with those of nongrafted, …

Low Temperature Modification Of Cell Ultrastructure In Hardy And Nonhardy Grass Species, Steven L. Kimball

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Studies were conducted to determine the influence of different temperatures (25, 10, 0, or -5 C) upon plant growth and cell ultrastructure, and to determine if physical changes within cells might block growth activities even though individual biochemical processes were potentially active.

Secale cereale L. was found to be most hardy, followed by Cynodon dactylon (L) Pers. and Paspalum notatum Flugge, whose responses were quite similar. Secale grew normally at 25 and 10 C, with reduced activity at 0 C and a slight delay before resuming normal growth when placed at 25 C again. All three species were killed at …

The Effect Of Chromosomal Position On Dosage Compensation And Ontogenic Expression Of The V+ Gene In D. Melanogaster, Jack E. Tobler

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Two manifestations of gene regulation-- dosage compensation and ontogenic regulation--were examined in normally positioned and relocated v⁺ genotypes in Drosophila melanogaster to determine the role of gene position in these control functions. Enzyme assays, used as criteria of gene activity, were performed on various genotypes containing different doses of v⁺ in normal and relocated positions in male and female flies. The results indicate that although differently positioned v⁺ genes may specify different tryptophan pyrrolase activities, they still show dosage compensation. In each case, the enzyme activity associated with each gene, either on the X, Y, or third …

Student Life, April 30, 1971, Vol. 68, No. 78, Utah State University

The Utah Statesman

Weekly student newspaper of Utah State University in Logan.

Student Life, April 28, 1971, Vol. 68, No. 77, Utah State University

The Utah Statesman

Weekly student newspaper of Utah State University in Logan.

Student Life, April 26, 1971, Vol. 68, No. 76, Utah State University

The Utah Statesman

Weekly student newspaper of Utah State University in Logan.

Student Life, April 23, 1971, Vol. 68, No. 75, Utah State University

The Utah Statesman

Weekly student newspaper of Utah State University in Logan.

Student Life, April 21, 1971, Vol. 68, No. 74, Utah State University

The Utah Statesman

Weekly student newspaper of Utah State University in Logan.

Student Life, April 19, 1971, Vol. 68, No. 73, Utah State University

The Utah Statesman

Weekly student newspaper of Utah State University in Logan.

Student Life, April 16, 1971, Vol. 68, No. 72, Utah State University

The Utah Statesman

Weekly student newspaper of Utah State University in Logan.

Summary Of Efforts To Increase Sales Tax By 1/2%, Gary N. Anderson

Undergraduate Honors Capstone Projects

The 39th Legislature was faced with a well-organized lobby promoting the adoption of an increase in the sales tax to help the cities of the State of Utah meet their increasing financial plight, particularly in financing the needs of law enforcement. This paper will outline, from an observer's viewpoint, the background of this movement; its initial approaches; its later attempts; and finally its failure.

This is an examination of one particular issue which contains several elements which have continuing significance. 1)The move to adopt the 1/2% sales tax was well-publicized and was quite visible to the public. 2)It had widespread …

Student Life, April 14, 1971, Vol. 68, No. 71, Utah State University

The Utah Statesman

Weekly student newspaper of Utah State University in Logan.

Student Life, April 12, 1971, Vol. 68, No. 70, Utah State University

The Utah Statesman

Weekly student newspaper of Utah State University in Logan.

Student Life, April 9, 1971, Vol. 68, No. 69, Utah State University

The Utah Statesman

Weekly student newspaper of Utah State University in Logan.

Student Life, April 7, 1971, Vol. 68, No. 68, Utah State University

The Utah Statesman

Weekly student newspaper of Utah State University in Logan.

Student Life, April 5, 1971, Vol. 68, No. 67, Utah State University

The Utah Statesman

Weekly student newspaper of Utah State University in Logan.

Student Life, April 2, 1971, Vol. 68, No. 66, Utah State University

The Utah Statesman

Weekly student newspaper of Utah State University in Logan.

Student Life, March 31, 1971, Vol. 68, Vol. 65, Utah State University

The Utah Statesman

Weekly student newspaper of Utah State University in Logan.

Student Life, March 29, 1971, Vol. 68, No. 64, Utah State University

The Utah Statesman

Weekly student newspaper of Utah State University in Logan.

Student Life, March 26, 1971, Vol. 68, No. 63, Utah State University

The Utah Statesman

Weekly student newspaper of Utah State University in Logan.

Student Life, March 24, 1971, Vol. 68, No. 62, Utah State University

The Utah Statesman

Weekly student newspaper of Utah State University in Logan.

Student Life, March 12, 1971, Vol. 68, No. 61, Utah State University

The Utah Statesman

Weekly student newspaper of Utah State University in Logan.

Student Life, March 10, 1971, Vol. 68, No. 60, Utah State University

The Utah Statesman

Weekly student newspaper of Utah State University in Logan.

Student Life, March 8, 1971, Vol. 68, No. 59, Utah State University

The Utah Statesman

Weekly student newspaper of Utah State University in Logan.

Student Life, March 5, 1971, Vol. 68, No. 58, Utah State University

The Utah Statesman

Weekly student newspaper of Utah State University in Logan.

Student Life, March 3, 1971, Vol. 68, No. 57, Utah State University

The Utah Statesman

Weekly student newspaper of Utah State University in Logan.

Effects Of Season And Intensity Of Use On Desert Vegetation, C. Wayne Cook

UAES Bulletins

Desert ranges of the Great Basin area support about 9 million cattle and sheep for 5 to 6 months each winter. Many of these same ranges are used by cattle year-long.

If forage is not available on desert ranges, livestock have to be wintered on farmsteads or in feedlots after they are forced from the mountains and foothills by snow. Since feeding during the winter is expensive and reduces the economic efficiency of the range livestock operation, there is real advantage in properly managing the desert ranges and conserving the supply of forage for winter grazing.

Managing desert ranges for …

Nectar And Pollen Plants Of Utah, William P. Nye

All PIRU Publications

No abstract provided.