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Growth of Aphanizomenon flos-aquae in defined media

Creator:: O'Flaherty, Larrance Michael Arthur, 1941-
Abstract:: A strain of Aphanizomenon flos-aquae Born. et Flah. has been introduced into culture and maintained since August of 1964 in completely defined media. It exhibits the planktonic, colonial flake form found in nature, and both heterocysts and akinetes are present. The color and size of the flake and general appearance...
Resource Type:: Dissertation
Full Text:: ABSTRACT OF THE THESIS OF Larrance Michael O'Flaherty for the Ph. D. (Nar .e of student) in Botany

Physical factors affecting longevity and germination of seed of Western dwarfmistletoe (Arceuthobium campylopodum Engelm. f. campylopodum)

Creator:: Beckman, Kent Mardsen
Abstract:: Longevity and germination of seed of western dwarfmistletoe (Arceuthobium campylopodum Engelm. f. campylopodum) of ponderosa pine (Pinus ponderosa Laws.) was investigated to determine: 1) the influence of humidity and temperature on seed viability and deterioration during storage; 2) the physiology of seed dormancy; 3) the composition of seed reserve food...
Resource Type:: Dissertation
Full Text:: of Plant Pathology In Charge of Major Head o Depar trp tany and Plant Pathology Dean of Graduate

Physiological relationships between dwarf mistletoe and ponderosa pine

Creator:: McDowell, Larry Leon
Abstract:: A comparative study was made of Pinus ponderosa Laws, and Arceuthobium campylopodum Engelm. f . campylopodum to determine (1) whether or not the parasite or parasitized tissues accumulate abnormal concentrations of minerals, (2) whether or not there was evidence of a blockage of mineral translocation in the phloem because of...
Resource Type:: Dissertation
Full Text:: con- trols based on function. Thie study was undertaken to increase our knowtedge of the physi,o

Growth and replacement patterns occuring among selected dominant species associated with plant succession on Douglas fir clear-cuts

Creator:: Robinson, Myles Canby
Abstract:: Growth and replacement patterns of four successionally important species occurring on Douglas fir clear-cuts were investigated from September 1964 to June 1967. The study was carried out on the Marys Peak watershed located near Corvallis, Oregon. Species used in the study include Holcus lanatus, Senecio jacobaea, Lotus crassifolius var. subglaber,...
Resource Type:: Dissertation
Full Text:: by Cockayne (Goodall, L95Z; Levy and Madden, 1933). ' Cockayne did not publish a description o

Isolation and identification of dahlia viruses

Creator:: Lawson, Roger Harold
Abstract:: Three viruses were isolated from dahlias using a modification of Yarwood's leaf-disc method of inoculation. Two of these isolates have been reported previously in dahlias. In addition, a fourth virus was isolated using a liquid-nitrogen transmission technique. Dahlia virus isolate 1 possessed host range and thermal inactivation properties similar to...
Resource Type:: Dissertation
Full Text:: APPROVED: Professor of Botany and Plant Pathology In Charge of Major alrm or ep en o o any an ant

Characterization of pectic enzymes produced by Fusarium oxysporum f. lycopersici

Creator:: Young, Robert J.
Resource Type:: Dissertation
Full Text:: ) reaction mixtures. A) Monogalacturonic acid, di -, tri -, and tetragalacturonic acids with Rf's of O. 62

Purification and properties of the polygalacturonases produced by Fusarium oxysporum f. sp. lycopersici

Creator:: Harman, Gary Elvan, 1944-
Abstract:: This study was undertaken to determine the sorts of polygalacturonases present in the culture filtrate of Fusarium oxysporum f. sp. lycopersici, to purify and characterize these enzymes, and to study any complexes that may form between polygalacturonase and carbohydrate not degraded by the enzyme. The polygalacturonase in culture filtrate consists...
Resource Type:: Dissertation
Full Text:: Kaji and Okada (23) Erwinia cartovora 36. 2 5. 2 -5.4 2-6 1 -2 Nasuno and Star (36) Avocado O. 2 5. 2

Production of pectic enzymes by Verticillium albo-atrum

Creator:: McIntyre, Gary Allen
Abstract:: The main objectives of this study were to determine the effect of certain environmental conditions on the quantity of poly-galacturonase (PG) produced by V. albo-atrum, and to partially purify and characterize the PGs produced by this fungus in culture and in infected tomato plants. V. albo-atrum produced twenty times as...
Resource Type:: Dissertation
Full Text:: supernatant was collected after centrifugation and passed through a pre - sterilized Millipore (HA O. 45

Origin and distribution of polyploid Achillea (Compositae) in western North America

Creator:: Tyrl, Ronald J.
Abstract:: A cytogeographical study was made of populations of tetraploid (n=18) and hexaploid (n=27) Achillea millefolium (Compositae- Anthemideae) from the Pacific Coast states. There is a complex distributional pattern, involving overlapping ranges, mixed populations, migration of one form into areas occuplied by the other, pentaploid hybrids, and septaploid and octoploid plants....
Resource Type:: Dissertation

The humic water of Klamath Marsh and its effect on the growth of Anabaena cyclindrica Lemm. in culture

Creator:: Peek, Chester Allen
Resource Type:: Dissertation
Full Text:: . R. O. Belkengren who provided not only important laboratory facilities, but advice, en couragement

ScholarsArchive@OSU

Growth of Aphanizomenon flos-aquae in defined media

Physical factors affecting longevity and germination of seed of Western dwarfmistletoe (Arceuthobium campylopodum Engelm. f. campylopodum)

Physiological relationships between dwarf mistletoe and ponderosa pine

Growth and replacement patterns occuring among selected dominant species associated with plant succession on Douglas fir clear-cuts

Isolation and identification of dahlia viruses

Characterization of pectic enzymes produced by Fusarium oxysporum f. lycopersici

Purification and properties of the polygalacturonases produced by Fusarium oxysporum f. sp. lycopersici

Production of pectic enzymes by Verticillium albo-atrum

Origin and distribution of polyploid Achillea (Compositae) in western North America

The humic water of Klamath Marsh and its effect on the growth of Anabaena cyclindrica Lemm. in culture

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