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Development and control of benomyl-tolerant Botrytis cinerea strains on snap beans (Phaseolus vulgaris)

Creator:: Johnson, Earl Ray
Abstract:: Benomyl-tolerant Botrytis cinerea was found in snap bean fields throughout the Willamette Valley while no tolerant isolates of Whetzelinia sclerotiorum were detected. Thirty-five benomyl-tolerant isolates of B. cinerea had slower radial growth rates than eighteen benomyl-sensitive isolates. Sporulation of an aggressive tolerant isolate was not stimulated when grown on benomyl-treated...
Resource Type:: Masters Thesis
Full Text:: requirements for the degree of Master of Science Completed December 12, 1977 Commencement June 1978

The effects of ozone on the growth, rhizosphere population dynamics, and mycorrhizal colonization of wheat

Creator:: Kimball, Shannon M.
Resource Type:: Masters Thesis
Full Text:: 12 17 Fig. 6. Summary of the general effects of mycorrhizae and ozone, alone and in combination, on

The effect of variation of some physical and chemical factors on the rate of growth of Botyrococcus braunii (Chlorophyta, Chlorococcales)

Creator:: Julian, Larry L.
Abstract:: The culture of the green alga Botryococcus braunii Kutz. obtained for use in this study was contaminated with bacteria and fungi. Algal colonies from this culture sonicated, rinsed and treated with penicillin (500 μg/ml), gentamicin sulfate (50 μg/ml) and amphotericin B (5 μg/ml) were found to be axenic when incubated...
Resource Type:: Masters Thesis
Full Text:: investigated. The rate of growth of the alga at 12 C and 25 C was relatively similar. At 29 C no increase was

Factors affecting inter-tree root contact and the transmission of Phellinus weirii in young-growth Douglas-fir

Creator:: Reynolds, Keith M.
Abstract:: Groups of second-growth Douglas-fir (Mirb.) Franco were excavated in plots of two to six trees on two sites in the vicinity of Cowichan Lake, Vancouver Is., British Columbia. Eleven excavation plots provided 36 trees which could be studied in pairs (a total of 50 pairs) in order to ascertain the...
Resource Type:: Masters Thesis
Full Text:: Initiation, Spread and Persistence of Infection 12 Initial infection 12 Persistence 13 Zone lines 13 Red

Description and classification of the forests of the upper Illinois River drainage of Southwestern Oregon

Creator:: Atzet, Thomas
Abstract:: The purpose of this study was to develope a plant community classification within the Siskiyou mountains, a small range within the Klamath geological province well known for its geologic and floristic diversity. Forest land managers have expressed the need for identification of basic Land classes that will aid in the...
Resource Type:: Dissertation
Full Text:: The Quarternary Period 11 Soils 12 Climate . . . 16 Introduction 16 Precipitation within the Study

Grazer-periphyton interactions in laboratory streams

Creator:: Sumner, William T.
Resource Type:: Masters Thesis
Full Text:: Pathology presented on December 12, 1979 Title: GRAZER-PERIPHYTON INTERACTIONS IN LABORATORY STREAMS

Development of vesicular-arbuscular mycorrhizae and pink root (Pyrenochaeta terrestris) in commercial onion fields in relation to nutrition, pH, and soil fumigation

Creator:: McGraw, Anne-Cressey
Resource Type:: Masters Thesis
Full Text:: Infection 12 Pink Root Disease 13 MATERIALS AND METHODS 16 Field Locations and Plant Sampling 16 Soil

Morphology, ultrastructure and mating of sporidia of a wheat-bunt fungus, Tilletia caries (DC.) Tul.

Creator:: Kollmorgen, James Frederick
Abstract:: The teliospore of Tilletia caries germinates to produce a promycelium with a whorl of primary sporidia at its tip. The time between emergence of the promycelium and the development of primary sporidia averaged 2.3 h. Fusion between compatible sporidia occurred within an additional 3.8 h. Primary sporidia appeared to be...
Resource Type:: Dissertation
Full Text:: to test blocks without mycelium, based on hyphal tips per sporidium. 12 Evidence for migration of

The effects of univalent cations on the inductive formation of nitrate reductase

Creator:: Nitsos, Ronald Eugene
Abstract:: An investigation was undertaken to determine whether potassium is indeed necessary for the in vivo synthesis of a specific protein. The effects of univalent cations on the inductive formation of nitrate reductase and on the level of activity of representative non-adaptive enzyme are presented. Cultures of Neurospora crassa were grown...
Resource Type:: Masters Thesis
Full Text:: M.S. in Botany (Name) (Degree) (Major) Date thesis is presented May 12, 1966 Title The Effects of

Some crown gall inoculation experiments with special reference to the stomata as possible ports of entry

Creator:: Patty, Frank Alexander
Resource Type:: Masters Thesis
Full Text:: MASTER. 07 SCIENCE by Fran'; Plexander patty May 12, 1930 AlrOVErks Redacted for Privacy !lc ad of

ScholarsArchive@OSU

Development and control of benomyl-tolerant Botrytis cinerea strains on snap beans (Phaseolus vulgaris)

The effects of ozone on the growth, rhizosphere population dynamics, and mycorrhizal colonization of wheat

The effect of variation of some physical and chemical factors on the rate of growth of Botyrococcus braunii (Chlorophyta, Chlorococcales)

Factors affecting inter-tree root contact and the transmission of Phellinus weirii in young-growth Douglas-fir

Description and classification of the forests of the upper Illinois River drainage of Southwestern Oregon

Grazer-periphyton interactions in laboratory streams

Development of vesicular-arbuscular mycorrhizae and pink root (Pyrenochaeta terrestris) in commercial onion fields in relation to nutrition, pH, and soil fumigation

Morphology, ultrastructure and mating of sporidia of a wheat-bunt fungus, Tilletia caries (DC.) Tul.

The effects of univalent cations on the inductive formation of nitrate reductase

Some crown gall inoculation experiments with special reference to the stomata as possible ports of entry

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