Index Catalog // ScholarsArchive@OSU

Aphid transmission of three strains of cucumber mosaic virus

Creator:: Nelson, Robert Leroy
Resource Type:: Masters Thesis
Full Text:: Virus APHID !RUSMISSIOI OF uttEI StRAINS OF ·CUCUMBER MOSAIC VIRUS by ROBEBT LEROY NELSON A

Reproductive isolation and interspecific hybridization in the threatened species, Sidalcea nelsoniana

Creator:: Gisler, Steven D.
Abstract:: In addition to its longstanding recognition as an influential evolutionary process, interspecific hybridization is increasingly regarded as a potential threat to the genetic integrity and survival of rare plant species, manifested through gamete wasting, increased pest and disease pressures, outbreeding depression, competitive exclusion, and genetic assimilation. Alternatively, hybridization has also...
Resource Type:: Masters Thesis
Full Text:: like to thank my advisor, Robert Meinke, for his critical review of this thesis and ongoing personal

Association of genetically determined polymorphic blood components with prolificacies of purebred and crossbred pigs

Creator:: Kray, Roger LeRoy
Abstract:: Crossmatings were accomplished among three semi-closed lines within a population of pigs, for the purpose of investigating effects of crossbreeding on reproductive traits. Two of the lines were purebred (Berkshire and Yorkshire); the third line ("Composite") consisted of descendants from inter se matings among offspring of crosses of the Berkshire...
Resource Type:: Dissertation
Full Text:: AN A9STRACT OF TUE TnSIS OF Roger LeRoy Kray for the degree

Management and marketing strategies for high desert beef ranches in Eastern Oregon

Creator:: Panasuk, Eugene Duane
Abstract:: Ranchers in the high desert area of Eastern Oregon traditionally market their calves when they are weaned in late fall. This is the time when the market prices for calves are at a seasonal low. In this study the economic feasibility of various alternative management and marketing strategies for the...
Resource Type:: Masters Thesis
Full Text:: RANCHES IN EASTERN OREGON Abstract approved: Dr. A. Gene Nelson Ranchers in the high

The chemical control and the utilization of Anacharis densa

Creator:: Jordan, Gilbert Leroy
Resource Type:: Masters Thesis
Full Text:: densa THE CHEMICAL CONTROL AND THE UTILIZATION V ANACHARIS DENSA by GILBERT LEROY JORDAN A

Insect enemies of Dendroctonus pseudotsugae Hopk. : indentification of their immature stages and distribution in standing trees

Creator:: Kline, LeRoy N.
Abstract:: The objectives undertaken in this study were: 1) to develop means of identifying the immature stages of the known insect predators and parasites of the Douglas-fir beetle; 2) to investigate the possible distribution, spatially and/or temporal, of the known insect predators and parasites in standing trees infested by the Douglas-fir...
Resource Type:: Masters Thesis
Full Text:: by LEROY NELSON KLINE A THESIS submitted to OREGON STATE UNIVERSITY in partial fulfillment

High school evaluation of students' chances for success in college

Creator:: Pierson, Leroy Richard
Resource Type:: Dissertation
Full Text:: , proper credit must appear in that work. This thesis by LEROY RICHARD PIERSON has been used ir accordance

A revision of Juncus subgenus genuini (Juncaceae) in the Pacific states

Creator:: Lint, Harold LeRoy
Abstract:: A study was made of the subgenus Genuini of the genus Juncus in the Pacific States, California, Oregon and Washington. Extensive morphological comparisons, geographical distributions, habitat differences and observations of apparent presence or absence of natural hybrids provided the major data sources. Cytological studies were made, but were inconclusive. Eleven...
Resource Type:: Dissertation
Full Text:: Pacific states AN ABSTRACT OF THE THESIS OF Harold LeRoy Lint for the degree cf Doctor of Philosophy

Conservation of Sidalcea nelsoniana through habitat management : effects of burning, mowing, and altered flooding regime on a rare Willamette Valley perennial

Creator:: Bartels, Marilynn R.
Abstract:: Active habitat management plays a key role in the preservation of native ecosystems and rare species, especially in the Willamette Valley of Oregon, where natural succession to woodlands threatens the few wetland prairies remaining after 150 years of agriculture and urbanization. Sidalcea nelsoniana, listed as threatened under the federal Endangered...
Resource Type:: Masters Thesis
Full Text:: . Herbert Huddleston, Robert Meinke, and Dominique Bachelet for their time and valuable feedback. This

Dry climates of central and eastern Oregon

Creator:: Brisbois, Alfred Leroy
Resource Type:: Masters Thesis
Full Text:: OF CENTRAL AD EASTERN OREGON by ALFRED LEROY BRISBOIS A THESIS submitted to OREGON STATh

ScholarsArchive@OSU

Aphid transmission of three strains of cucumber mosaic virus

Reproductive isolation and interspecific hybridization in the threatened species, Sidalcea nelsoniana

Association of genetically determined polymorphic blood components with prolificacies of purebred and crossbred pigs

Management and marketing strategies for high desert beef ranches in Eastern Oregon

The chemical control and the utilization of Anacharis densa

Insect enemies of Dendroctonus pseudotsugae Hopk. : indentification of their immature stages and distribution in standing trees

High school evaluation of students' chances for success in college

A revision of Juncus subgenus genuini (Juncaceae) in the Pacific states

Conservation of Sidalcea nelsoniana through habitat management : effects of burning, mowing, and altered flooding regime on a rare Willamette Valley perennial

Dry climates of central and eastern Oregon

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