Index Catalog // ScholarsArchive@OSU

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

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

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

The inheritance of stem rust (Puccinia graminis graminicola) resistance in perennial ryegrass (Lolium perenne)

Creator:: Rose, Crystal A.
Abstract:: Three stem rust Puccinia graminis graminicola, resistant sources of perennial ryegrass, Lolium perenne, 4A, 48A, and 77A, were crossed in a partial diallel design with one susceptible source, MP-2, resulting in six crosses excluding reciprocals. The F1's and cloned parental populations were inoculated in the field and rated on a...
Resource Type:: Masters Thesis
Full Text:: ). Forage and turf grasses are generally self sterile, cross pollinators and being synthetic varieties are

Nitrogen fertilizer rate and application timing effects on growth and seed-oil yield of meadowfoam

Creator:: McGahuey, Michael L.
Abstract:: Meadowfoam has been identified as a potential oilseed crop for production on poorly drained soils in areas with cool, moist winters. The effects of N fertilizer on meadowfoam (Limnanthes alba Benth.) have been studied in Oregon and Maryland, but the results have not been consistent with respect to the effects...
Resource Type:: Masters Thesis
Full Text:: bees for pollination. Weather during 2 flowering affects bee foraging, pollination efficiency, and

ScholarsArchive@OSU

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

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

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

The inheritance of stem rust (Puccinia graminis graminicola) resistance in perennial ryegrass (Lolium perenne)

Nitrogen fertilizer rate and application timing effects on growth and seed-oil yield of meadowfoam

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