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Creator:: Tvergyak, Paul J.
Abstract:: Oregon's Willamette Valley sweet cherry growers have developed a market for large, high quality, stem-on brining cherries. The maturity indices pull force (PF), percent soluble solids (SS), and weight (Wt) were chosen as being the most probable indicators of maturity. The rate of change of PF during the harvest period...
Resource Type:: Masters Thesis
Full Text:: wish to thank my wife, Pat, for her encouragenaent and understanding;. TABLE OF CONTENTS

Creator:: Gottlieb, Leslie D., 1936-
Abstract:: Arctostaphylos viscida Parry and A. canescens Eastw., two well-known and frequently encountered manzanitas in the Siskiyou Mountains in southwestern Oregon, are shown to hybridize and to produce an extensive series of morphological intermediates. The hybridization occurs wherever populations of these two species meet at contact zones of serpentine and non-serpentine...
Resource Type:: Masters Thesis
Full Text:: " and to have added new species in geologically recent times (Stebbins, 1950, p. 551). ). Studies of

Creator:: Haertel, John David
Abstract:: Experimental crosses between Rana pretiosa pretiosa Baird and Girard and Rana cascadae Slater, resulted in viable hybrids. Reciprocal differences at the time of fertilization are indicated. A high level of success in producing viable hybrids can be obtained if Rana pretiosa pretiosa is the female of the parent species, The...
Resource Type:: Masters Thesis
Full Text:: the deeper tissues. The pattern on the surface appeared independent of the pat- tern in the deeper

Creator:: Zanzot, James W.
Abstract:: The sudden oak death pathogen, Phytophthora ramorum, is present in southwestern Oregon, and while an eradication effort is underway, the potential impact of the polyphagous pathogen on surrounding vegetation is unknown. Plant communities in the area are substantially different from those affected in California, although tanoak (Lithocarpus densiflorus), evergreen huckleberry...
Resource Type:: Masters Thesis
Full Text:: greatly to my efforts; Dr. Thomas Atzet, Pat Martinez, Maria Ulloa-Cruz and Veva Stansell (retired) all

Creator:: Clothier, Glen Warren
Abstract:: The investigation was conducted from January 1965 to March 1966. An intensive effort was made to obtain large numbers of animals, as it is believed that unavailability of specimens has been the limiting factor in the amount of research concerning this species. Two hundred and sixty-nine animals were collected. They...
Resource Type:: Masters Thesis
Full Text:: method. The line method is mentioned by Stebbins (1954), and was intro- duced to the writer by Robert

Creator:: Wilson, H. F. (Harley Frost), 1883-
Resource Type:: Masters Thesis
Full Text:: L.) (Ajuga genevensis) alaterni Toxoptera, Del Guerclo, 1909, Rivista di Pat. Vegetale, IV, p

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