Index Catalog // ScholarsArchive@OSU

Development of in vitro lily scale budlets as related to virus elimination

Creator:: Ruttum, Joanne C.
Abstract:: Lily hybrids vary in their ability to produce virus-free (VF) bulblets when grown from virus-infected scales in tissue culture. Asiatic hybrids typically produce a higher percentage of in vitro VF scale bulblets than do Lilium longiflorum cultivars. Three hypotheses concerning the cause of this variation are tested on five lily...
Resource Type:: Masters Thesis
Full Text:: virus elimination AN ABSTRACT OF THE THESIS OF Joanne C. Ruttum for the degree of Master of Science

The distribution of planktonic diatoms in Yaquina Estuary, Oregon

Creator:: Karentz, Deneb
Resource Type:: Masters Thesis
Full Text:: £0 r the d eg r e e of _.::.:M:.:;;A:.=S;..:T;..:E=.;R::.:..-O.:::..=.F-..::::S:...::C::...,:I=E:;,:N

Potato virus X : detection and inter-relationship with Verticillium dahliae and Colletotrichum atramentarium

Creator:: Goodell, Jody Jellison
Abstract:: Preliminary studies were run to determine the sensitivity and reliability of enzyme-linked immunosorbent assay (ELISA) for the detection of potato virus X (PVX). ELISA was found to be capable of detecting PVX in tobacco at a 1:3333 sample dilution. The reliability of ELISA for the detection of PVX in potato...
Resource Type:: Masters Thesis
Full Text:: Abstract approved: Redacted for privacy Thomas C. Allen Preliminary studies were run to determine the

Serological and biological characterization of seed-borne isolates of blackeye cowpea mosaic and cowpea aphid-borne mosaic potyviruses in Vigna unguiculata (L.) Walp

Creator:: Bashir, Muhammad
Resource Type:: Dissertation
Full Text:: . G. Dougherty, Dr. G. W. Krantz, and Dr. C. C. Mundt, who served on my committee, and for their

Water deficit stress effects on bacterial ring rot of potato caused by Clavibacter michiganensis subsp. sepedonicus

Creator:: Crabtree, Kristine L.
Abstract:: Population size of Clavibacter michiganensis subsp. sepedonicus in potato cv Russet Burbank and plant response as affected by drought were assessed in a greenhouse experiment. Water deficit stress and no stress treatments, and inoculum densities of 0 or 2 X 10⁷ cfu C. m. sepedonicus/seed piece were arranged factorially. Stem...
Resource Type:: Masters Thesis
Full Text:: of 0 or 2 X 107 cfu C. m. sepedonicus/seed piece were arranged factorially. Stem populations of C

Environmental factors influencing the rate of spread of Phellinus weirii (Murr.) Gilbertson in young-growth Douglas-fir

Creator:: Angwin, Peter A.
Abstract:: Studies to identify the environmental factors that influence the rate of ectotrophic mycelial growth of Phellinus weirii (Murr.) Gilbertson along Douglas-fir roots were undertaken both in the laboratory and in the field. The effects of soil pH, nitrogen, moisture, temperature, microorganisms and bulk density were investigated. In the lab, the...
Resource Type:: Masters Thesis
Full Text:: of P. weirii was greatest at 15% soil water content. Maximum growth occurred at 20-25 C. Field

Epidemiology of disease caused by Pseudomonas syringae as an epiphyte and its frequency, distribution, and characteristics as an endophyte of pear

Creator:: Whitesides, Steven K.
Abstract:: Conditions were established for inducing pear blossom blast caused by Pseudomonas syringae (Ps) on both attached and detached shoots. The incidence of disease was proportional to the log of Ps population under optimal temperature, moisture and bloom developmental stage. Highest incidence of infection followed occurrence of a major exotherm in...
Resource Type:: Dissertation
Full Text:: temperatures ranging from -1.8 to -3.5 C. Wetness duration following exotherm occurrence was less important

Transposon-induced nutritional and virulence mutants in two pathovars of Pseudomonas syringae

Creator:: Anderson, Dirk M.
Resource Type:: Masters Thesis
Full Text:: target DNA; (B) one DNA strand at each end of the transposon is joined to the cleaved target DNA. (C) The

Purification and properties of a ferredoxin from Rhizobium japonicum bacteroids

Creator:: Carter, Kevin Richard
Resource Type:: Dissertation
Full Text:: 1900 nmol C 2 H 4 produced.min -1 -mg 1 in the reaction mediating electron transfer between

A Lower Cretaceous (Valanginian) seed cone provides the earliest fossil record for Picea (Pinaceae)

Creator:: Klymiuk, Ashley A. and Stockey, Ruth A.
Abstract:: Premise of study: Sequence analyses for Pinaceae have suggested that extant genera diverged in the late Mesozoic. While the fossil record indicates that Pinaceae was highly diverse during the Cretaceous, there are few records of living genera. This description of an anatomically preserved seed cone extends the fossil record for...
Resource Type:: Article
Full Text:: earliest record for Cathaya is a palynomorph, C. gaussenii Sivak, from the Lute- tian Buchanan Lake Fm

ScholarsArchive@OSU

Development of in vitro lily scale budlets as related to virus elimination

The distribution of planktonic diatoms in Yaquina Estuary, Oregon

Potato virus X : detection and inter-relationship with Verticillium dahliae and Colletotrichum atramentarium

Serological and biological characterization of seed-borne isolates of blackeye cowpea mosaic and cowpea aphid-borne mosaic potyviruses in Vigna unguiculata (L.) Walp

Water deficit stress effects on bacterial ring rot of potato caused by Clavibacter michiganensis subsp. sepedonicus

Environmental factors influencing the rate of spread of Phellinus weirii (Murr.) Gilbertson in young-growth Douglas-fir

Epidemiology of disease caused by Pseudomonas syringae as an epiphyte and its frequency, distribution, and characteristics as an endophyte of pear

Transposon-induced nutritional and virulence mutants in two pathovars of Pseudomonas syringae

Purification and properties of a ferredoxin from Rhizobium japonicum bacteroids

A Lower Cretaceous (Valanginian) seed cone provides the earliest fossil record for Picea (Pinaceae)

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