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Revegetation in the 1914-1915 devastated area of Lassen Volcanic National Park

Creator:: Bailey, Warren Hutchinson, 1914-
Abstract:: At the time of the eruptions of Lassen Peak in 1914-1915, an area of vegetation along the east slope of the mountain approximately 1 1/4 miles wide and four miles long was destroyed. Except for a few surviving trees, all vegetation was destroyed. A study of the revegetation of this...
Resource Type:: Dissertation
Full Text:: research site to as- sist in preparations. Much credit should also be given to R. G. Prasil, who as

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:: during the course of this work and in preparation of the manuscript. Thanks are also given to Dr. R. A

Succession and certain adaptive features of plants native to the sand dunes of the Oregon coast

Creator:: Kumler, Marion Lawrence, 1941-
Abstract:: The vegetation of the Oregon coast is characterized by a variety of stages of plant succession which are repeated widely throughout the sand dune area. During the years from 1960 to 1963 the gradation of upland sand dune succession was studied on 48 plots within a 150 mile section of...
Resource Type:: Dissertation

Characterization of pectic enzymes produced by Fusarium oxysporum f. lycopersici

Creator:: Young, Robert J.
Resource Type:: Dissertation
Full Text:: objective of this study was to separate and characterize the pectic enzymes produced by races R5 -6 and R

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

Enzymatic and respiratory studies on the role of cobalt in legumes

Creator:: De Hertogh, August
Resource Type:: Dissertation
Full Text:: (Name) Date thesis is presented (Degree) (Major) , r) / ) L Title ENZYMATIC AND RESPIRATORY

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:: Kilias (2) purified PTE from pectinol R -10 by gel filtration on Sephadex and DEAE- Sephadex column

Contracting nucleolar vacuoles in somatic tobacco cells growing in microcultures

Creator:: Johnson, John Morris
Abstract:: Contracting nucleolar vacuoles are a general and consistent feature of somatic tobacco cells growing in microcultures. Nucleolar vacuoles were studied in cells from callus tissues of two single-cell clones, H-196 and H-239, of hybrid tobacco (Nicotiana tabacum X N. glutinosa). Vacuoles periodically contracted either completely or incompletely, apparently releasing a...
Resource Type:: Dissertation
Full Text:: days after first observation Figure 9. Changes in Volume of Nucleolus with Age 80 :r""_ 60. 40

The role of Verticillium albo-atrum Reinke and Berth in seed transmission and induction of a latent disease of Pelargonium

Creator:: Koocheki, Hormozdyar Khodadad
Abstract:: Many initially healthy Pelargonium seedlings developed symptoms of Verticillium wilt in an Oregon State University greenhouse when they attained blooming age. The symptoms first appeared in May as "edge burning," yellowing, and wilting of leaves. In late summer, these seedlings which were the offspring of Verticillium infected plants, became severely...
Resource Type:: Masters Thesis
Full Text:: - urally infected and inoculated plants. 37 5 THE ROLE OF VER TICILLIUM ALBO -ATR UM R EINKE AND

An analysis of montane forest vegetation on the east flank of the central Oregon Cascades

Creator:: West, Neil E.
Abstract:: Montane forest vegetation as it occurs on the east flank of the central Oregon Cascades has provided excellent conditions for a "natural experiment" in the use of various methodologies in studying vegetational distribution. This "experiment" has reflected on some theory and practice for the discipline of plant synecology. Detailed descriptions,...
Resource Type:: Dissertation
Full Text:: developed and been practiced principally in the north -central United States. These ±-1:,.R so

ScholarsArchive@OSU

Revegetation in the 1914-1915 devastated area of Lassen Volcanic National Park

Isolation and identification of dahlia viruses

Succession and certain adaptive features of plants native to the sand dunes of the Oregon coast

Characterization of pectic enzymes produced by Fusarium oxysporum f. lycopersici

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

Enzymatic and respiratory studies on the role of cobalt in legumes

Production of pectic enzymes by Verticillium albo-atrum

Contracting nucleolar vacuoles in somatic tobacco cells growing in microcultures

The role of Verticillium albo-atrum Reinke and Berth in seed transmission and induction of a latent disease of Pelargonium

An analysis of montane forest vegetation on the east flank of the central Oregon Cascades

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