Index Catalog // ScholarsArchive@OSU

Biological soil crusts in forested ecosystems of southern Oregon : presence, abundance and distribution across climate gradients

Creator:: Olarra, Jennifer A.
Abstract:: In arid and semi-arid deserts, soils are commonly covered with biological soil crusts. The study of arid biocrusts and their ecological function has become increasingly common in the literature over the last several decades. Interestingly, no mention is made of biological soil crusts in forested ecosystems, raising the question as...
Resource Type:: Masters Thesis
Full Text:: Jennifer A. Olarra for the degree of Master of Science in Soil Science presented on December 14, 2012

Breeding and genetics of lilacs and hardy hibiscus

Creator:: Lattier, Jason D.
Abstract:: Lilacs are a group of ornamental trees and shrubs in the Oleaceae family consisting of 22 to 30 species. There are six series within genus Syringa: Pubescentes, Villosae, Ligustrae, Ligustrina, Pinnatifoliae, and Syringa. Fertility and cross-compatibility among cultivars, species, and series have yet to be formally investigated. Over three years,...
Resource Type:: Dissertation
Full Text:: members is also sincerely appreciated, including Dr. Shawn Mehlenbacher, Dr. Jennifer Kling, Dr. Nahla

From the Oregon Wolfe Barley to fall-sown food barley : markers, maps, marker-assisted selection and quantitative trait loci

Creator:: Chutimanitsakun, Yada
Abstract:: Understanding complex traits is a fundamental challenge in plant genetics and a prerequisite for molecular breeding. Tools for trait dissection are markers, maps, and quantitative trait locus (QTL) analysis. Marker-assisted selection (MAS) is an application that integrates these tools. In this thesis research, a new sequence-based marker was evaluated, maps...
Resource Type:: Dissertation
Full Text:: : Patrick M. Hayes Understanding complex traits is a fundamental challenge in plant genetics and a pre

Nitrogen mineralization from organic amendments during the second year following application

Creator:: Kusonwiriyawong, Charirat
Abstract:: Estimates of nitrogen (N) available from long-term application of organic amendments are required to balance N inputs with crop N requirements. Two studies were conducted to (1) determine N mineralized from organic amendments (manures and composts) during year 2 after application, and (2) compare plant-available N (PAN) determined via in...
Resource Type:: Masters Thesis
Full Text:: from Organic Amendments During the Second Year Following Application. Abstract approved: Dan M

Germplasm design, gene discovery, and variety release: breeding barley for the Pacific Northwest

Creator:: Graebner, Ryan C.
Abstract:: This thesis consists of three manuscripts addressing separate components of barley breeding, plus an introduction and a conclusion summarizing the status of barley in the Pacific Northwest, plus the implications of the research presented in this thesis. In the first manuscript, a package written for the statistical software "R" that...
Resource Type:: Masters Thesis

Creep-feeding to stimulate metabolic imprinting in nursing beef heifers : impacts on heifer growth, reproductive, and physiological parameters

Creator:: De Meireles Reis, Maria
Abstract:: The following experiment presented herein compared growth, physiological, and reproductive responses of beef heifers with (MI) or without (CON) access to a creep-feeder, as a manner to stimulate metabolic imprinting while nursing their dams. On d 0 of the experiment, 60 Angus × Hereford heifers were ranked by initial BW...
Resource Type:: Masters Thesis
Full Text:: ; 7 × 15 m). Each drylot pen had 24 a creep-feeder (2.0 × 2.5 m) that allowed both heifers to

The Ecology and Epidemiology of Xanthomonas hortorum pv. carotae in Central Oregon Carrot Seed Production Systems

Creator:: Baldino, Katelyn D.
Abstract:: Xanthomonas hortorum pv. carotae (Xhc) is an epiphytic, plant pathogenic bacterium that causes the disease bacterial blight of carrot (Daucus carota subsp. sativus). Infection with Xhc can result in blighting of leaves and umbels and reduce quality and yield of carrot seed crops. Carrot production in the United States approaches...
Resource Type:: Masters Thesis
Full Text:: (KBG), mint (M), parsley root (PR), roughstalk bluegrass (RBG) and wheat (W) inoculated with a

Forage production, dual use potential, and trait variation in chicory grown in the Pacific Northwest

Creator:: Seeno, Elizabeth
Abstract:: Grasslands in the Pacific Northwest are characterized by seasonally wet, acidic soils that mainly support cool season grasses and a limited number of legume species. A major limitation to efficient animal production in grass-dominant pastures is the decline in the herbage growth rate and nutritional quality of forage from late...
Resource Type:: Dissertation
Full Text:: - Harley Naumann, Shelby Filley, Jennifer MacAdam, and Andony Melathopoulos. I also wish to acknowledge

Influence of supplement composition on utilization of low-quality, cool-season forages by beef cattle

Creator:: McGuire, Dustin L.
Abstract:: Two studies were conducted to evaluate the influence of supplement composition on intake and digestibility of a low-quality (< 6% CP), cool-season forage, as well as cow performance. Treatments included a non-supplemented control (CON), corn (approximately 8% CP), corn and urea (LU = corn + 0.09 mg/kg BW urea, approximately...
Resource Type:: Masters Thesis

Evolutionary relationships and an investigation of sympatric speciation within Limnanthaceae

Creator:: Meyers, Stephen C.
Abstract:: Limnanthes floccosa ssp. floccosa and L. floccosa ssp. grandiflora are two of five subspecies of Limnanthes floccosa endemic to vernal pools in southern Oregon and northern California. Three seasons of monitoring natural populations have quantified that L. floccosa ssp. grandiflora is always found growing sympatrically with L. floccosa ssp. floccosa...
Resource Type:: Dissertation
Full Text:: References Arroyo, M., 1973a. A taximetric study of infraspecific variation in autogamous Limnanthes

ScholarsArchive@OSU

Biological soil crusts in forested ecosystems of southern Oregon : presence, abundance and distribution across climate gradients

Breeding and genetics of lilacs and hardy hibiscus

From the Oregon Wolfe Barley to fall-sown food barley : markers, maps, marker-assisted selection and quantitative trait loci

Nitrogen mineralization from organic amendments during the second year following application

Germplasm design, gene discovery, and variety release: breeding barley for the Pacific Northwest

Creep-feeding to stimulate metabolic imprinting in nursing beef heifers : impacts on heifer growth, reproductive, and physiological parameters

The Ecology and Epidemiology of Xanthomonas hortorum pv. carotae in Central Oregon Carrot Seed Production Systems

Forage production, dual use potential, and trait variation in chicory grown in the Pacific Northwest

Influence of supplement composition on utilization of low-quality, cool-season forages by beef cattle

Evolutionary relationships and an investigation of sympatric speciation within Limnanthaceae

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