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Evaluation of assay systems for the determination of susceptibility of the hop (Humulus lupulus) to Verticillium wilt caused by Verticillium dahliae

Creator:: Shufelt, Eileen Marie
Abstract:: A rapid and reliable assay is needed to evaluate hop resistance to Verticillium wilt caused by Verticillium dahliae. Assays used in the past are laborious, require long incubation periods, and usually produce mild symptoms which are difficult to evaluate and are often not consistent. A study comparing several methods for...
Resource Type:: Masters Thesis
Full Text:: to distinguish the relative susceptibility and resistance of hop cultivars to V. dahliae. This

Powdery mildew (Podosphaera macularis Braun & Takamatsu) resistance in wild hop genetic resources

Creator:: Smith, Jodi M.
Abstract:: Hop powdery mildew, caused by Podosphaera macularis Braun & Takamatsu (formerly Sphaerotheca macularis (Wallr. :Fr.) Lind, syn. S. humuli (DC.)Burrill) was not observed in Pacific Northwest hop yards until 1997, when it was discovered in Washington. Within one year, it had spread to Oregon and Idaho. This emerging disease caused...
Resource Type:: Masters Thesis

Investigation of hop downy mildew through association mapping and observations of the oospore

Creator:: Parker, Thomas B.
Abstract:: Hop downy mildew is a devastating disease affecting hop requiring expensive fungicide applications throughout the growing season. Plant resistance is highly desirable and theorized as being decidedly quantitative with dominance and epistasis involved in resistance. An association mapping approach using a mixed-model was used to identify AFLP markers associated with...
Resource Type:: Dissertation
Full Text:: importance and breeding for resistance Hop downy mildew is a disease of major importance in the hop

An investigation involving the sampling of morphological characters for use in estimating disease resistance and sample size in hops

Creator:: Hunt, Oliver Joseph
Resource Type:: Dissertation
Full Text:: characters for use in estimating disease resistance and sample size in hops AN INVESTIGATION INVOLVING THE

Verticillium wilt of hops : pathogenicity, host range, and temperature relations of the causal agents

Creator:: Zehsazian, Hassan
Abstract:: Verticillium wilt of hops in Oregon, caused by Verticillium dahliae Kleb., was first reported in 1956. Later, V. albo-atrum Reinke & Berth. was also isolated from infected hop plants, and thus both species of the fungus were shown to be the causal agents of the disease in Oregon. The purpose...
Resource Type:: Dissertation
Full Text:: . The disease persisted from year to year but fluc- tuated in severity and hop production was not

Mechanisms of hop resistance to the twospotted spider mite (Tetranychus urticae Koch)

Creator:: Peters, Kay Myra
Abstract:: Hop varieties were compared under field and greenhouse conditions to determine their relative susceptibility to the twospotted spider mite, Tetranychus urticac Koch. A fertility schedule was prepared for mites on resistant and susceptible varieties, and tests were conducted to compare sex ratio, oviposition rate, survival rate, and developmental rate of...
Resource Type:: Masters Thesis
Full Text:: varieties are used commercially. Some of the qualities selected in hop breeding are disease resistance

Streptomycin absorption and translocation by hops (Humulus lupulus L.) and effects of streptomycin on the hop downy mildew disease

Creator:: Maier, Charles Robert
Resource Type:: Dissertation
Full Text:: Lupulus L.), and Effects of Streptomycin on the Hop Downy Mildew Disease STRil'fOII!OIN ABSOBFliON AND

Resistance in hops to systemic rootstock and crown infection by downy mildew

Creator:: Skoe, Donald Edward
Resource Type:: Masters Thesis
Full Text:: Resistance in hops to systemic rootstock and crown

Bionomics of the hop cyst nematode, Heterodera humuli Filipjev, 1934 (Nematoda : Heteroderidae)

Creator:: Sen, Arun Kumar
Abstract:: The hop cyst nematode, Heterodera humuli Filipjev, 1934 was first reported from Europe in 1894, however, very little is known with respect to the biology and economic importance of this pest. Abundant material from Oregon hop yards provided an excellent opportunity to add additional details concerning the bionomics of this...
Resource Type:: Dissertation
Full Text:: economic importance of this pest. Abundant material from Oregon hop yards provided an excellent

Hop pest control

Creator:: Morrison, H. E. (Hugh Engle), 1905- and Oregon State College. Agricultural Experiment Station
Abstract:: Published May 1958. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Resource Type:: Technical Report
Full Text:: agricultural product. Insecticides recommended for hop pest control, such as nicotine, TEPP, parathion, and

ScholarsArchive@OSU

Evaluation of assay systems for the determination of susceptibility of the hop (Humulus lupulus) to Verticillium wilt caused by Verticillium dahliae

Powdery mildew (Podosphaera macularis Braun & Takamatsu) resistance in wild hop genetic resources

Investigation of hop downy mildew through association mapping and observations of the oospore

An investigation involving the sampling of morphological characters for use in estimating disease resistance and sample size in hops

Verticillium wilt of hops : pathogenicity, host range, and temperature relations of the causal agents

Mechanisms of hop resistance to the twospotted spider mite (Tetranychus urticae Koch)

Streptomycin absorption and translocation by hops (Humulus lupulus L.) and effects of streptomycin on the hop downy mildew disease

Resistance in hops to systemic rootstock and crown infection by downy mildew

Bionomics of the hop cyst nematode, Heterodera humuli Filipjev, 1934 (Nematoda : Heteroderidae)

Hop pest control

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