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Bees Associated with Linden (Tilia spp.) Trees and their Susceptibility to Toxic Sugars in Nectar

Creator:: Argoti, Adriana G.
Abstract:: Bees provide critical pollination services to diverse agricultural crops, native plants and trees. Globally, there are reports of bee declines which have been attributed to diseases, exposure to pesticides and changes in land use that are believed to have led to a reduction in foraging resources and nesting habitats for...
Resource Type:: Masters Thesis
Full Text:: : Bees Associated with Linden (Tilia spp.) Trees and their Susceptibility to Toxic Sugars in Nectar

Growth and development of three meadowfoam (Limnanthes spp.) lines

Creator:: Fiez, Timothy E.
Abstract:: Meadowfoam (Limnanthes R. Br. spp.), a source of C₂₀ and C₂₂ fatty acids, is a new industrial oilseed crop adapted to the Willamette Valley of Oregon. Increased oil yield per land area may increase the rate of meadowfoam commercialization. Using two half-sib L. floccosa x L. alba lines, 85-765 and...
Resource Type:: Masters Thesis
Full Text:: within a selection nursery using honey bees (Apis mellifera L.) as pollinators. The F2 (or So

Chemically induced male sterility and natural out-crossing in selected wheat cultivars (Triticum aestivum L. em Thell)

Creator:: Ekse, Ali Osman
Abstract:: Three chemicals SD 55446, SD 55447 and WL 84245 were found to induce male sterility in cultivars of wheat or triticale. Both SD 55446 and SD 55447 when applied at a concentration of 0.896 kg/ha resulted in 90% male sterility. However, SD 55447 caused female sterility at the same concentration...
Resource Type:: Masters Thesis
Full Text:: . A single drill strip was 3.1 m wide with male sterile to pollinator ratios being 1:1, 2:1 and 3:1

Chemically induced pollen supression and subsequent natural outcrossing in selected wheat cultivars (Tritcum aestivum L. en Thell)

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:: female treatments and one male pollinator, Johnson and Brown (1978) observed seed set in bagged spikes

Effects of floral position, stamen quality, hand pollination, and temperature during reproductive development on meadowfoam seed set and seed yield

Creator:: Alba, Elena L.
Abstract:: Inconsistent seed yields of meadowfoam (Limnanthes alba Benth.) interfere with profitable production of this new oilseed crop. Significant correlation of field grown meadowfoam seed yields with years having temperatures above 24°C in mid-May at Corvallis, OR., led to the hypothesis that ambient temperature during reproductive development affects meadowfoam seed yields....
Resource Type:: Masters Thesis
Full Text:: stands of meadowfoam. Arroyo (1975) suggests that fluctuations in pollinator availability and seasonal

Some agronomic practices of the vegetable seed industry of Oregon

Creator:: Groenveld, Menno
Resource Type:: Masters Thesis
Full Text:: colonies of bees in radish fields at bloorning timo increases sed yield. atorials and 5ethods of

Trinexapac-ethyl timing and rate effects on crimson clover (Trifolium incarnatum L.) seed yield and seed yield components

Creator:: Morad, Mohammed
Abstract:: Oregon is the world’s leading producer of crimson clover (Trifolium incarnatum L.) seed. Recent research has reported that seed yield has been increased in cool-season grass and red clover (T. pratense L.) seed crops with the application of trinexapac-ethyl, a gibberellic acid biosynthesis inhibiting plant growth regulator (PGR) and lodging-control...
Resource Type:: Masters Thesis
Full Text:: pollination and profitable seed production. The honeybee is crimson clover’s primary pollinator, whereas

Temperature effects on postanthesis floral phenology and megagametophytic development in meadowfoam

Creator:: Franz, Robert E.
Abstract:: Meadowfoam (Limnanthes alba Benth.), an open-pollinated herbaceous winter annual, is adapted to Mediterranean climates and produces a seed oil with industrial uses. Seed yield in meadowfoam is partially determined by the number of seeds produced per flower. The flower is protandrous with the stigmata becoming receptive 1-3 days after anther...
Resource Type:: Masters Thesis
Full Text:: seed yield and suggest the need for timely pollinator manage- ment, especially during periods of rapid

The effect of date of planting, row spacing and seeding rate on seed yield and seed yield components of red clover (Trifolium pratense L.) in the Willamette Valley

Creator:: Echeverria, Eduardo M.
Resource Type:: Masters Thesis
Full Text:: was dependent on the pollinator populations available and the weather conditions affecting their

Isolation and Pathogenicity of Naturally Occurring Entomopathogenic Fungi to Clover Root Borer (Coleoptera: Curculionidae: Scolytinae), a Pest of Red Clover Seed Crops

Creator:: Lestari, Anis S.
Abstract:: Entomopathogenic fungi are cosmopolitan microbial pathogens that cause fungous diseases in a wide range of insects via spore infection. Due to their natural enemy status, they have tremendous potential for use as microbial control agents against insect pests, especially subterranean pests for which few management options are available. The clover...
Resource Type:: Masters Thesis
Full Text:: for conserving pollinators. Its flowers provide a valuable food resource for bumble bees, which can

ScholarsArchive@OSU

Bees Associated with Linden (Tilia spp.) Trees and their Susceptibility to Toxic Sugars in Nectar

Growth and development of three meadowfoam (Limnanthes spp.) lines

Chemically induced male sterility and natural out-crossing in selected wheat cultivars (Triticum aestivum L. em Thell)

Chemically induced pollen supression and subsequent natural outcrossing in selected wheat cultivars (Tritcum aestivum L. en Thell)

Effects of floral position, stamen quality, hand pollination, and temperature during reproductive development on meadowfoam seed set and seed yield

Some agronomic practices of the vegetable seed industry of Oregon

Trinexapac-ethyl timing and rate effects on crimson clover (Trifolium incarnatum L.) seed yield and seed yield components

Temperature effects on postanthesis floral phenology and megagametophytic development in meadowfoam

The effect of date of planting, row spacing and seeding rate on seed yield and seed yield components of red clover (Trifolium pratense L.) in the Willamette Valley

Isolation and Pathogenicity of Naturally Occurring Entomopathogenic Fungi to Clover Root Borer (Coleoptera: Curculionidae: Scolytinae), a Pest of Red Clover Seed Crops

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