Index Catalog // Hyrax

Occurrence, transmission, and properties of strains of cucumber mosaic virus that are seed-transmitted in Phaseolus vulgaris

O Criador:: Davis, Robert Francis
Abstract:: A survey of major bean (Phaseolus vulgaris) breeding programs and seed producing areas in Idaho, Washington, and Oregon was conducted to determine the occurrence of cucumber mosaic virus (CMV), recently reported to be seedborne in beans. Some 259 plants, sampled from breeding lines of diverse germplasm, were found by enzyme-linked...
Resource Type:: Dissertation

Chemical control of hop downy mildew (Pseudoperonospora humuli) and tolerance by Phytophthora isolates to the systemic fungicide metalaxyl

O Criador:: Hunger, Robert Marvin
Resource Type:: Dissertation

Biological control of crown gall with bacterial and fungal antagonists

O Criador:: Cooksey, Donald Arthur
Resource Type:: Dissertation

Biosystematics of a Western North American polyploid complex in the genus aster

O Criador:: Guppy, Geraldine Anne Allen
Abstract:: Species relationships were investigated in a western North American polyploid complex in the genus Aster (Asteraceae). A combination of cytological, genetical, chemical, morphological and numerical approaches was employed. Fifteen presently recognized species were included in the study, and populations were sampled throughout most of the range of the group. Living...
Resource Type:: Dissertation

Production and characterization of antifungal compounds produced by tomato plants inoculated with Fusarium oxysporum f. sp. lycopersici

O Criador:: Danko, Stephen John
Abstract:: The fungitoxicity of acetone extracts from the xylem of Fusarium wilt disease resistant tomato plants (cv. Jefferson) inoculated with Fusarium oxysporum f. sp. lycopersici was greatly influenced by environmental factors. Extracts obtained from plants 1 h after watering were 4-times more toxic than extracts from plants subjected to water stress...
Resource Type:: Dissertation

Patterns of ectomycorrhizal host-fungus specificity in the Pacific Northwest

O Criador:: Molina, R.
Abstract:: Results from approximately 400 fungus-host pure culture inoculations indicate that specificity of ectomycorrhizal associations is a complex phenomenon and cannot be based solely on field observations of sporocarp-host associations. Of the numerous sporocarp-host specific fungi tested, most formed ectomycorrhizae with one or more unexpected, non-associated hosts. These results conclusively demonstrate...
Resource Type:: Dissertation

Control of cytokinin autonomy in Phaseolus lunatus callus cultures

O Criador:: Kim, Sang-Gu
Abstract:: The ability of N,N'-diphenylurea (DPU) to substitute for cytokininactive adenine derivatives in promoting callus growth of Phaseolus lunatus and Nicotiana tabacum has been examined. In general, DPU stimulated callus growth of P. lunatus at high concentrations and the growth of most callus tissues was irregular, while the response of tobacco...
Resource Type:: Dissertation

Dry coniferous forests in the Western Oregon Cascades

O Criador:: Means, Joseph E.
Abstract:: Pseudotsuga menziesii dominates the forests of the Pacific Northwest. But though it is dominat, Tsuaa heteroohylla or Abies amabilis is usually climax. Many researchers have studied Pseudotsuga on the widespread mesic sites where it is seral, but few have examined the relatively rare ecosystems in which Pseudotsuga or its associate...
Resource Type:: Dissertation

The mycorrhizal associations of western hemlock

O Criador:: Kropp, Bradley Ray
Abstract:: Two objectives of this research were to identify fungi which are mycorrhizal with western hemlock and to examine the ecology of hemlock mycorrhizal fungi indigenous to outplanting sites. Another objective was to evaluate the effectiveness of mycorrhizal inoculation in improving the performance of outplanted hemlock seedlings. A list of over...
Resource Type:: Dissertation

Factors affecting the inoculum potential of VA and ectomycorrhizal fungi in forest soils of southwest Oregon and northern California

O Criador:: Parke, Jennifer Lee
Resource Type:: Dissertation

Hyrax

Occurrence, transmission, and properties of strains of cucumber mosaic virus that are seed-transmitted in Phaseolus vulgaris

Chemical control of hop downy mildew (Pseudoperonospora humuli) and tolerance by Phytophthora isolates to the systemic fungicide metalaxyl

Biological control of crown gall with bacterial and fungal antagonists

Biosystematics of a Western North American polyploid complex in the genus aster

Production and characterization of antifungal compounds produced by tomato plants inoculated with Fusarium oxysporum f. sp. lycopersici

Patterns of ectomycorrhizal host-fungus specificity in the Pacific Northwest

Control of cytokinin autonomy in Phaseolus lunatus callus cultures

Dry coniferous forests in the Western Oregon Cascades

The mycorrhizal associations of western hemlock

Factors affecting the inoculum potential of VA and ectomycorrhizal fungi in forest soils of southwest Oregon and northern California

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