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:: data. Thanks are extended to Dr. W. E. Kronstad, Dr. R. G. Petersen, Dr. W. L. McCuistion and Dr. R

Time and duration of growth stages and subsequent grain yield in selected wheat cultivars (Triticum aestivum L. em Thell)

Creator:: Choi, Byung Han
Abstract:: The need to develop a shorter life cycle wheat cultivar which would be more adapted to multiple cropping systems prompted this study. Thus the following information was obtained. Greatest variations in developmental patterns were found in the stem elongation, booting, inflorescence emergence and anthesis for five winter and five spring...
Resource Type:: Masters Thesis
Full Text:: appreciation to Drs. W. L. McCuistion R. G. Petersen, R. L. Powelson, and G. Crabtree for serving on my

The influence of parents, mating systems, and planting date on the transfer of gynoecious flowering to Chinese cucumbers (Cucumis sativus L.)

Creator:: Zhang, Qi (Qi Qun), 1956-
Abstract:: Gynoecious inbred lines of cucumbers (Cucumis sativus L.) with high (HF), medium (MF) and low (LF) percentage of gynoecious plants were used in crosses with monoecious Chinese cultivars with high (HN), medium (MN) and low (LN) percentage of nodes with female flowers. F₁ and F₂ progenies from these parents crossed...
Resource Type:: Masters Thesis
Full Text:: (CUCUMIS SATIVUS L.). Abstract approved: ^ ^—^ Dr. A. C. Gabert and .i<r~vw—:—-—ra

Potash fertilizer effects on yield, hollow heart, and nutrient levels in potato tubers and petioles

Creator:: McBride, Robin L.
Abstract:: Potash rate and source effects on tuber yield and quality (hollow heart, size, and processing quality), and nutrient (K, Ca, Mg, and C1) concentrations in petioles and tubers were evaluated in three experiments, two in the Columbia Basin in Oregon (McDevitt and Levy) and one in Central Oregon (Powell Butte)....
Resource Type:: Masters Thesis
Full Text:: the research, and in reviewing and editing the text, Drs. Neil W. Christensen and Mary L. Powelson

Effect of resident epiphytic fungi development of brown rot blossom blight of stone fruits

Creator:: Wittig, Hans P. P.
Abstract:: Antagonistic effects of Epicoccum purpurascens, Aureobasidium pullulans, Trichoderma spp., and Botrytis cinerea on establishment of Monilinia fructicola infections in cherry and peach blossoms were assessed in field and mist chamber studies. Conidia of each fungus were applied to blossoms that were subsequently inoculated with conidia of M fructicola. Mist chamber...
Resource Type:: Masters Thesis
Full Text:: thank my committee members, Dr. M. L. Powelson and Dr. J. W. Psheidt for their advice and for

Cephalosporium stripe of wheat : seedling-based resistance screening and pathogenic variability

Creator:: Cowger, Christina
Abstract:: Cephalosporium stripe of wheat (Triticum aestivum), caused by the soilborne fungus Cephalosporium gramineum, results in significant yield reductions in dryland winter wheat crops of the U.S. Pacific Northwest. The development of resistant cultivars offers the best hope for disease control. Breeding for resistance is hampered by the long trial times...
Resource Type:: Masters Thesis
Full Text:: , naturally infested host debris. Phytopathology 54:1035-1036. 10. Bruehl, G. W., Millar, R. L., and

The performance of N-(1,1-dimethylpropynyl)-3,5-dichlorobenzamide and other herbicides in controlling weeds in lettuce as affected by soil type and weather conditions

Creator:: Mitidieri, Agustin
Abstract:: Chemicals are being sought that can control weeds in lettuce under different environmental conditions, soil types and weed populations. The extensive or repeated use of a herbicide may lead to important changes in the weed population which call for new materials that can take care of the modified situation. In...
Resource Type:: Masters Thesis
Full Text:: manuscript. Sincere appreciation is extended to Dr. Harry J. Mack and Dr. Robert L. Powelson for

Estimators of seed yield and its components in a plant introduction nursery of tall fescue (Festuca arundinacea Schreb.)

Creator:: Deffinbaugh, Daniel D.
Abstract:: The objective of this study was to identify visual or easily measured morphological characters associated with seed yield or its components in a spaced-plant nursery of tall fescue (Festuca arundinacea Schreb.). In 1977, 26 plant characteristics were observed on 210 plants from seven different geographic regions of origin. Each origin...
Resource Type:: Masters Thesis
Full Text:: committee members, Dr. Robert L. Powelson and Dr. Wendell H. Slabaugh. I am indebted to those who helped

Chloride fertilizer effects on grain yield, water potential components and disease severity of winter wheat with take-all

Creator:: Mitchell, Becky
Abstract:: Take-all root rot (caused by Gaeumannomyces graminis var. tritici, Ggt) is one of the major diseases limiting winter wheat yields in western Oregon. Losses caused by take-all (TA) can be significantly reduced through crop management and fertilization practices. Results from field experiments in western Oregon show that the use of...
Resource Type:: Masters Thesis
Full Text:: his patience, and role as major professor, editor and guide. To Drs. Robert L. Powelson, Richard P

Investigation of Nematocyst Discharge in Parasitic Cnidarians (Myxozoa)

Creator:: Americus, Benjamin E.
Abstract:: Myxozoans are an enigmatic group of obligately parasitic, microscopic cnidarians. They diverged from their free-living relatives over 600 million years ago and have highly reduced genomes. However, they have retained nematocyst stinging cells which characterize the phylum Cnidaria. Free-living cnidarians utilize this cellular weaponry for defense and predation whereas the...
Resource Type:: Masters Thesis
Full Text:: troubleshooting. I am indebted to the staff at the John L. Fryer Aquatic Animal Health Laboratory and my lab

ScholarsArchive@OSU

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

Time and duration of growth stages and subsequent grain yield in selected wheat cultivars (Triticum aestivum L. em Thell)

The influence of parents, mating systems, and planting date on the transfer of gynoecious flowering to Chinese cucumbers (Cucumis sativus L.)

Potash fertilizer effects on yield, hollow heart, and nutrient levels in potato tubers and petioles

Effect of resident epiphytic fungi development of brown rot blossom blight of stone fruits

Cephalosporium stripe of wheat : seedling-based resistance screening and pathogenic variability

The performance of N-(1,1-dimethylpropynyl)-3,5-dichlorobenzamide and other herbicides in controlling weeds in lettuce as affected by soil type and weather conditions

Estimators of seed yield and its components in a plant introduction nursery of tall fescue (Festuca arundinacea Schreb.)

Chloride fertilizer effects on grain yield, water potential components and disease severity of winter wheat with take-all

Investigation of Nematocyst Discharge in Parasitic Cnidarians (Myxozoa)

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