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Creator:: Alexander, William Larry
Abstract:: The major objective of this study was to determine why certain winter wheat cultivars, when hybridized, will produce a greater proportion of desirable plants in subsequent, segregating generations. Three winter wheat parents were chosen as the experimental material, based on their known performance as parents. Yamhill and Pullman Selection 101...
Resource Type:: Dissertation
Full Text:: , Dr. W. L. McCuistion, Dr. R. L. Powelson, and Dr. K E. Rowe. Special thanks are due to Dr. K. E

Creator:: Camargo, Carlos Eduardo de Oliveira
Resource Type:: Dissertation
Full Text:: sincerely thank Dr. W. L. McCuistion, Dr. R. L. Powelson, Dr. G. D. Faulkenberry, Dr. R. Petersen and Dr. J

Creator:: Tola, Jaime
Abstract:: Barley Yellow Dwarf Virus (BYDV) is a major disease of wheat. Unfortunately, unlike barley where the Yd2 gene provides adequate levels of resistance, the situation in wheat is more complex. This study was designed to provide information regarding: 1) evaluation of methods of measuring resistance among selected cultivars; 2) identification...
Resource Type:: Dissertation
Full Text:: , Herbert J. Huddleston and Robert L. Powelson for serving on my graduate committee. Thanks to Drs. Glenn

Creator:: Brajcich, P.
Abstract:: This investigation was motivated by the apparent increase in genetic variability resulting from the systematic combining of gene pools represented by winter and spring types of wheats. It was the objective of this study to provide information regarding the nature of this genetic variability for nine agronomic characters in populations...
Resource Type:: Dissertation
Full Text:: preparation of this thesis. Appreciation is extended to Drs. Fred A. Cholick, Robert L. Powelson, William D

Creator:: Oritiz Ferrara, Guillermo
Resource Type:: Dissertation
Full Text:: . L. McCuistion, Dr. W. E. Kronstad, Dr. F. A. Cholick, Dr. Robert L. Powelson, Dr. Kenneth E. Rowe

Creator:: Chastain, Thomas G.
Abstract:: Orchardgrass and tall fescue seed crops are commonly springplanted in Oregon, but do not produce a marketable crop during the first growing season. Establishing orchardgrass and tall fescue with cereal companion crops would provide income during the seeding year and could increase seed production profits. This study was conducted to...
Resource Type:: Dissertation
Full Text:: increased stomatal resistance (L r ) and reduced transpiration rate (TR) on 10 June 1986 (Table 1.5

Creator:: Assuncao, Marcos Vinicius
Abstract:: Two experiments were conducted to determine the effects of moisture stress on physiological changes that occur during the vegetative and reproductive stages of the wheat (Triticum aestivum L.) plant, and to relate these effects to seed yield, quality and performance. In a field experiment, different levels of moisture stress were...
Resource Type:: Dissertation
Full Text:: . Bolton, Dr. D. 0. Chilcote, Dr. D. J. Armstrong, Dr. L. D. Koller and Dr. Jack R. Stang for serving as

Creator:: Chase, Richard Lyle
Resource Type:: Dissertation
Full Text:: throughout my doctoral program. Thanks are also extended to S. C. Fang, R. L. Stebbins, W. W. Chilcote, and

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