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Creator:: Lund, Walter Thomas
Resource Type:: Masters Thesis
Full Text:: appreciation to Doctor S. M. Zeller for his suggestions and willing assistance during the inves- tigation

Creator:: Vaughan, Edward Kemp
Resource Type:: Masters Thesis
Full Text:: healthy. TRA.NSIflSSIO BY I2CHANICAL MEJTS Mr. B. F. Dana, Plant Pathologist, U. S. D. A., cooperating

Creator:: Murray, Marion S.
Abstract:: In 1991 Pacific yew (Taxus brevifolia Nutt.) was reported as a new host for Phytophthora lateralis Tucker and Milbrath which is an aggressive root rot pathogen thought previously to be specific to Port-Orford-cedar. This study was designed to compare the pathogenicity of P. lateralis on the two hosts, and to...
Resource Type:: Masters Thesis
Full Text:: Phytophthora lateralis AN ABSTRACT OF THE THESIS OF Marion S. Murray for the degree of Master of Science

Creator:: Whitaker, William Carey
Resource Type:: Masters Thesis
Full Text:: . ACIO\1DGLtNT S. I wish to express my sincere appreciation to Lir. i'«i. B. McKay, formerly Plant

Creator:: Jeong, Soon-Chun
Abstract:: The evolutionary relationship between Frankia and actinorhizal plants was evaluated by reconstructing molecular phylogenetic trees from nifH, 16S rDNA, and rbcL nucleotide sequences. Subgroupings in Frankia phylogenetic trees reconstructed from nifH and from 16S rDNA sequences were consistent in terms of plant origins of Frankia strains. Although the branching order...
Resource Type:: Dissertation
Full Text:: . Clark, M. Hedren, B. S. Gaut, R. K. Jansen, K.-J. Kim, C. F. Wimpee, J. F. Smith, G. R. Furrier, S. H

Creator:: Hunger, Robert Marvin
Resource Type:: Dissertation
Full Text:: assistance and editing by P. B. Hamm, C. E. Horner, and E. M. Hansen during prepara- tion of Chapter IV are

Creator:: Veach, Yeonjin Kim
Abstract:: Cytokinins are plant hormones regulating cell division and differentiation. Most developmental events from germination, vegetative morphogenesis to seed and fruit set are influenced by cytokinins. t,ns-Zeatin is the major natural occurring cytokinin. Its isomer, cis-zeatin, and its derivatives are usually present in low quantities and have traditionally been considered as...
Resource Type:: Masters Thesis
Full Text:: cisZOGl (A) and cisZOG2(B) ............ 26 2.5. The effect of substrate concentration on the velocity of

Creator:: Kohnen, Paul D.
Abstract:: Biological, serological, and molecular characteristics of the P4 pathotype of pea seedborne mosaic potyvirus (PSbMV) were investigated. The characterization allowed P4 to be differentiated from other pathotypes of the same virus. P4 was distinguished from P1 on the basis of host symptomatology. It induced varied, but often distinctive symptoms in...
Resource Type:: Dissertation
Full Text:: United States (Stevenson & Hagedorn, 1973), although sample s'-es were limited. Seed transmission of up

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