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Creator:: Ait Amer Meziane, Aomar
Abstract:: There is an increasing need for development of laboratory identification procedures for purposes of plant variety protection, seed certification, quality control and consumer protection. In the past there were fewer commercial varieties and field testing methods based on morphological differences were used satisfactorily. These tests require several months to complete...
Resource Type:: Masters Thesis
Full Text:: , 1983 Typed by Gloria M. Foster for Aomar Ait-Amer Meziane DEDICATION To my wife and my children

Creator:: Berry, Pete A.
Abstract:: An important inoculum source of Leptosphaeria maculans and L. biglobosa (syn Plenodomus spp.), the pathogens that cause black leg in Brassicaceae crops, is infected plant residues. The general acceptance of conservation tillage in the Willamette Valley, Oregon, USA, has enabled a build-up in the amount of residue on or near...
Resource Type:: Dissertation
Full Text:: : _____________________________________________________________________ Carol A. Mallory-Smith An important inoculum source of Leptosphaeria maculans and L

Creator:: Mmolawa, Onesimus B.
Abstract:: Meadowfoam (Limnanthes spp.) is a potential oil seed crop being developed for commercial production in the Willamette Valley. The seeds are characterized by poor germination at warm temperatures. It would be desirable to overcome this temperature-related dormancy problem so that better stand establishment could be realized from early fall planting....
Resource Type:: Masters Thesis
Full Text:: with different-aged seed lots of L. alba 'Mermaid,' L. floccosa Howell and a cross of L. floccosa x L

Creator:: Lewis, Hal A.
Abstract:: Effective chemical control of pollination would provide an alternative to the cytoplasmic male-sterile system in hybrid wheat (Triticum aestivum L.) production. The objective of this study was to determine concentration, formulation, growth stage of application and genotypic effects on levels of induced pollen suppression and subsequent natural out-crossing from foliar...
Resource Type:: Masters Thesis
Full Text:: as a member on my graduate committee. Additional thanks to Dr. G. M. Perry and Dr. S. L. Broich for

Creator:: Bobadilla, Lucas K.
Abstract:: Italian ryegrass (Lolium perenne L. spp. multiflorum (Lam.) Husnot) is one of the most troublesome weeds with respect to herbicide resistance selection. Some reasons for this are the numerous documented cases of multiple and cross herbicide resistance and some of the biological characteristics of this species, such as wind cross-pollination...
Resource Type:: Masters Thesis
Full Text:: (Lolium perenne L. spp. multiflorum (Lam.) Husnot) Populations in Western Oregon Abstract approved

Creator:: Hostetler, Mary
Resource Type:: Masters Thesis
Full Text:: . Grabe, T. M. Ching, D. 0. Chilcote, W. W. Chilcote, K. L. Chambers, and G. Fisher for serving as

Creator:: Frederickson, Leslie John
Abstract:: Responses to two cycles of mass selection for heading date, followed by selfing or intermating, were studied in two diverse winter wheat (Triticum aestivum L. em. Thell) crosses. Selection was bidirectional, resulting in early and late populations for each mating system, cycle, and cross. The influence of mass selection for...
Resource Type:: Dissertation
Full Text:: sincere thanks is also extended to Drs. W. L. McCuistion, D. I. Mills, W. M. Proebsting, and K. E. Rowe

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