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Pollination biology and pollinator alternatives in mermaid meadowfoam (Limnanthes alba Hartw. ex Benth.)

Creator:: Jahns, Thomas R.
Abstract:: Meadowfoam (cultivar Mermaid) is an entomophilous winter annual oilseed crop that has historically produced an average of only two of five seeds per flower. Reference to inadequate meadowfoam pollination exists in the literature, but quantitative evidence is lacking. Studies were undertaken to: 1) quantify meadowfoam pollination requirements and 2) evaluate...
Resource Type:: Dissertation
Full Text:: btween foraging-bee pollinators m4 and yield (kg ha1) over the five caged-pollinator treat- ments used in

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

Allozyme genetics and mating systems of Cuphea Laminuligera and Cuphea lutea

Creator:: Krueger, Sharon K.
Abstract:: Cuphea laminuligera Koehne and Cuphea lutea Rose in Koehne are undomesticated species having potential as oilseed crops. Genetic markers and mating systems have not been described for these species. Our objectives were to survey these species for allozyme variation, analyze the segregation and linkage of polymorphic loci, estimate autofertility and...
Resource Type:: Dissertation
Full Text:: Allozyme genetics and mating systems of Cuphea

Physiological and yield responses of meadowfoam to water stress and nitrogen fertilization

Creator:: Pearson, Calvin H.
Resource Type:: Dissertation
Full Text:: Burgett for supplying the honey bees and analyzing the pollen. I would also like to acknowledge the

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

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

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

Effect of sheep grazing on subterranean clover (Trifolium subterraneum L.) seed production

Creator:: Steiner, Jeffrey John
Abstract:: Subterranean clover (Trifolium subterraneum L.) seed production practices in Oregon are different from those in Australia. There, seed is produced on fields which are managed primarily for forage. In Oregon, seed fields are managed for seed as the primary product and forage is of secondary concern. Some sheep grazing is...
Resource Type:: Dissertation
Full Text:: forage. In Oregon, seed fields are managed for seed as the pri- mary product and forage is of secondary

ScholarsArchive@OSU

Pollination biology and pollinator alternatives in mermaid meadowfoam (Limnanthes alba Hartw. ex Benth.)

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)

Allozyme genetics and mating systems of Cuphea Laminuligera and Cuphea lutea

Physiological and yield responses of meadowfoam to water stress and nitrogen fertilization

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

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

Temperature effects on postanthesis floral phenology and megagametophytic development in meadowfoam

Effect of sheep grazing on subterranean clover (Trifolium subterraneum L.) seed production

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