Past Graduate Students

Summer 2009

Mohammed Al-Daej, Ph.D.
Advisor: Harrison Hughes
Thesis:

Jana Bogs, Ph.D.
Advisor: Cecil Stushnoff
Thesis: "Effects of Organic, Biological and Conventional Production Methods on Apple Antioxidant Levels, Sensory Qualities and Human Glycemic Response"

An-Chueh Chou, M.S.
Advisor: Steve Newman
Thesis: "Nitrogen Ratios on the Growth of Pansy and Petunia"

Ali Hamm, M.S.
Advisor: Cecil Stushnoff
Thesis: "Colorado Hops"

Spring 2009

Frank Stonaker, Ph.D.
Advisor: Cecil Stushnoff
Thesis: "A Guide for Small-Scale Organic Vegetable Farmers in the Rocky Mountain Region"

Amanda Broz, Ph.D.
Advisor: Jorge M. Vivanco
Thesis: "Development and Utilization of Molecular Tools to Understand Invasion Biology in Spotted Knapweed (Centaurea maculosa)"

Fall 2008

Jingyi Nie, M.S.
Advisor: Anthony J. Koski
Thesis: "Turfgrasses as Invasive Species in the United States: A Literature Review"

Summer 2008

Salah Al-Turki, Ph.D.
Advisor: Cecil Stushnoff
Thesis: "Antioxidant Properties of Date Palm (Phoeniz dactylifera L.) Cultivars"

Andrew Houser, M.S.
Advisor: Robert D. Davidson
Thesis: "Development and Testing of a Greenhouse Assay for Screening Potato Germplasm for Susceptibility to Spongospora subterranea f.sp. subterranea (Powdery Scab)"

Spring 2008

Karen Salandanan, M.S.
Advisor: Cecil Stushnoff
Thesis: "Comparative Analysis of Antioxidant Properties, Quality Attributes and Yield of Organically and Conventionally Grown Melons (Cucumis melo L.) and Tomatoes (Solanum lycopersicum L.)"

Fall 2007

Clelia De La Pena, Ph.D.
Advisor: Jorge M. Vivanco
Thesis: " Study of Bioactive Proteins in the Roots and Root Exudates of Model Plants"

Karen Elsner, M.S.
Advisor: Harrison G. Hughes
Thesis: "Overcoming Seed Dormancy in Glaucium spp. (Papaveraceae)"

Teri Howlett, M.S.
Advisor: James E. Klett
Thesis: "Efficacy and Phytotoxicity of Preemergence Herbicides in Container-grown Landscape Plants"

James Matthew Ounsworth, M.S.
Advisor: James E. Klett
Thesis: "Water Use and Drought Resistance of Turfgrass and Landscape Shrubs"

Summer 2007

Satinder Singh Chopra, M.S.
Advisor: Yaling Qian
Thesis: "Urban Landscape Irrigation with Recycled Wastewater: Management Options for Mitigating Sodium Stress"

Matthew Damian Thompson, M.S.
Advisor: Cecil Stushnoff
Thesis: "Cancer Preventive Attributes of Selections from Malus"

Spring 2007

No Horticulture graduate students

Fall 2006

Todd Charles Einhorn, Ph.D.
Advisor: Horst Caspari
Thesis: "Water Relations of Apple Trees (Malus x domestica Borkh., cv. Gala) Under Partial Rootzone Drying Irrigation"

Emma Louise Locke, M.S.
Advisor: Steven E. Newman
Thesis: "Raffinose Family Oligosaccharides in Protection from Drought and Salinity Stresses and Graywater Application as an Alternative for Landscape Irrigation"

Hrvoje Rukavina, Ph.D.
Advisor: Harrison G. Hughes
Thesis: "Phenotypic Variability, Cold Hardiness and Flowering Induction of Saltgrass [Distichlis spicata (L.) Greene] Clones"

Summer 2006

Jennifer Ann Holtvoigt, M.S.
Advisor: David Hartley
Thesis: "Vase Life and Thrips Treatments of Field Grown Cut Flowers in Colorado"

Spring 2006

No Horticulture graduate students

Fall 2005

Mekhled Mutiran Al-Enazi, M.S.
Advisor: Harrison G. Hughes and David G. Holm
Thesis: "Influence of Storage Temperature and Time in Storage on Pigment Content of Potato (Solanum tuberosum L.)"

Summer 2005

Dawn Yvette Henson, M.S.
Advisor: David Hartley and Steven E. Newman
Thesis: "Performance of 19 Species of Bedding Plants and Kentucky Bluegrass Grown at Decreasing Levels of Irrigation"

Grant Aaron Johnson, M.S.
Advisor: Yaling Qian and Jessica Davis
Thesis: “Effects of Topdressing Established Kentucky Bluegrass with Composted Manure"

Spring 2005

Juma'a S. Al-Obeidani, Ph.D.
Advisor: Cecil Stushnoff
Thesis: "Antioxidant Properties of Colorado Grown Potatoes"

Oktay Kulen, Ph.D.
Advisor: Cecil Stushnoff
Thesis: "Potato Minituber Bud Dormancy Release"

Summer 2004

Jayraj Himanshu Muni, M.S.
Advisor: Steven E. Newman
Plan B

Spring 2004

Saleh Mobarak Al-Turki, M.S.
Advisor: Cecil Stushnoff
Thesis: "Total Phenolics and Antioxidant Capacity of Some Old World Cider Apples"

Fahrettin Goktepe, Ph.D.
Advisor: Harrison G. Hughes
Thesis: "Evaluation of Plant Characteristics and Disease Resistance in Cu-IPT Transformed Watermelon cv. Crimson Sweet"

Gregory Litus, M.S.
Advisor: James E. Klett
Thesis: "The Effects of Water Limitation and Heat on Flower Production, Resource Allocation and Partial Style Abscission in Oenothera macrocarpa ssp. incana"

Sang-Wook Park, Ph.D.
Advisor: Jorge M. Vivanco
Thesis: "Biochemical and Biological Roles of Ribosome-Inactivating Proteins"

Fall 2003

Mohammed Al-Daej, M.S.
Advisor: Harrison G. Hughes
Plan B

Summer 2003

Andrea K. Cummins, M.S.
Advisor: James E. Klett
Thesis: "Tree Production Utilizing Pot-In-Pot Techniques"

Hope Anne Gruszewski, M.S.
Advisor: David Holm and Jorge M. Vivanco
Thesis: "Control of Late Blight of Potato (Phytophthora infestans (Mont.) de Bary) Utilizing Endogenous and Exogenous Plant Resources"

Nusret Ozbay, Ph.D.
Advisor: Steven E. Newman
Thesis: “Biocontrol of Fusarium Crown and Root Rot of Fresh Market Tomato with Trichoderma harzianum Strains Under Greenhouse Conditions”

Spring 2003

Kent Sather, M.S.
Advisor: Asunta Thompson
Thesis: “Performance of Russet Norkotah Line Selections at Different Rates of Nitrogen”

Fall 2002

Hsiang Chang, Ph.D.
Advisor: Michelle Jones and Stephen J. Wallner
Thesis: “Cytokinin Regulation During Flower Senescence in Petunia x hybrida ‘V26' Transformed with SAG12-ipt”

James Robert Newberry, M.S.
Advisor: Anthony J. Koski
Thesis: “Conversion of Perennial Ryegrass (Lolium perenne L.) Fairways to Kentucky Bluegrass (Poa pratensis L.)"

Joyce Pennycooke, Ph.D.
Advisor: Cecil Stushnoff and Michelle Jones
Thesis: “Molecular and Physiological Analyses of a Temperature Dependent Galactosidase in Petunia x hybrida ‘Mitchell’”

Travis Walker, M.S.
Advisor: Jorge M. Vivanco
Thesis: “Isolation and Characterization of Root-secreted Secondary Metabolites, and Their Role Against Pseupomonas aeruginosa”

Spring 2002

Mary Rebecca (Suplick) Ploense, Ph.D.
Advisor: Yaling Qian
Thesis: “Physiological, Morphological, and Spectral Reflectance Characteristics of Kentucky Bluegrass, Texas Bluegrass, and Their Hybrids in Response to Water Stress”

Elizabeth Sears, M.S.
Advisor: James E. Klett
Thesis: “Weed Management and Cultivated Wildflowers”

Mohamed Ahmed Shahba, Ph.D.
Advisor: Yaling Qian and Harrison G. Hughes
Thesis: “Environmental Stress Aspects of Saltgrass [Distichlis spicata (L.) Greene]”

Fall 2001

Saad Al-Shammary, M.S.
Advisor: Yaling Qian and Stephen J. Wallner
Thesis: “Salinity Tolerance and Associated Salinity Tolerance Mechanisms of Four Turf Grasses”

Scott Reid, M.S.
Advisor: Harrison G. Hughes
Thesis: “Chromosome Races and Polyploid Cytoforms in Distichlis spicata”

Dianne (Oakley) Skogerboe, M.S.
Advisor: Harrison G. Hughes
Thesis: “Seed Dormancy in Callirhoe involucrata (Torr. & Gray) Gray, (Malvaceae)”

Spring 2001

Samuel Eliot Cox, M.S.
Advisor: Cecil Stushnoff
Thesis: “Lycopene Analysis and Horticultural Attributes of Tomatoes”

Fall 2000

Deirdre (Anderson) Detjens, M.S.
Advisor: James E. Klett
Plan B: “Plant Introduction Programs and Plant Select®”

Summer 2000

Judy Harrington, M.S.
Advisor: Anthony J. Koski
Thesis: “Overcoming Seed Dormancy in Distichlis spicata”

Laurel E. Potts, M.S.
Advisor: Stephen J. Wallner
Masters Paper: “Colorado Native Plants Survey - Voices of the Green Industry”

Spring 2000

Yu-Jen Chiang, Ph.D
Advisor: Cecil Stushnoff
Thesis: “Overexpression of Mannitol-1-Phosphate Dehydrogenase Increases Monnitol Production and Confers Salt and Chilling Tolerance in Transgenic Petunia cv. Mitchell”

Celia Tannehill, M.S.
Advisor: James E. Klett
Plan B: Co-authored “Best Perennials for the Rocky Mountains and High Plains”

Fall 1999

Andrea Christine Blaine, M.S.
Advisor: Steven E. Newman
Thesis: “Selection and Production of Six Herbaceous Flowering Perennial Species as Greenhouse Grown Alternative Cut Flowers”

Brian Grubb, M.S.
Advisor: James E. Klett
Thesis: “Post-harvest Storage & Establishment of Balled and Burlapped Tilia cordata Mill ‘Greenspire’”

Eun-Sun Kim, M.S.
Advisor: Steven E. Newman
Thesis: “The Effects of 1-methylcyclopropene in Preventing Petal Abscission of Geraniums” (Pelargonium x hortorum L.H. Bailey)

Marianne Poxleitner, M.S.
Advisor: Cecil Stushnoff
Thesis: “Stress Effects on Color Development in Pinot Noir Wine”

Izulme Santos, Ph.D.
Advisor: Cecil Stushnoff
Thesis: “Desiccation and Freezing Tolerance of Embryonic Axes and Lateral Buds of Citrus spp.: Implications for Germplasm Conservation”

Spring 1999

Juma Said Al-Abaidani, M.S.
Advisor: Cecil Stushnoff
Thesis:

Douglas A. Findley, Ph.D.
Advisor: Stephen J. Wallner
Thesis: “Impact of the Irrigation Regime on Trees and Turfgrass in a Landscape Setting”

Chang Park, M.S.
Advisor: Cecil Stushnoff
Thesis: “Characterization of Bud Dormancy in Potato”

Kirsten Blyth (Larson) Scott, M.S.
Advisor: James E. Klett
Thesis: “Enhancing Germination of Fraxinus anomala”

Fall 1998

Abdul-Aziz Al-Harthy, M.S.
Advisor: Matthew Rogoyski
Thesis: "The Influence of Wilthin and Sodium Chloride on Flowers of Peach (Prunus persica L.)"

Fahrettin Goktepe, M.S.
Advisor: Harrison G. Hughes
Plan B

Fatiha Hamdaoui, Ph.D.
Advisor: Harrison G. Hughes
Thesis: "Characterization of Chickpea (cicer arietinum L.) Accessions Using Molecular Techniques"

Oktay Kulen, M.S.
Advisor: Cecil Stushnoff
Plan B: "Galactosidase Activity in Cucumber Seeds Using a Rapid Gel Assay"

Summer 1998

Scott William Dunn, M.S.
Advisor: James E. Klett
Thesis: "Growth After Mechanical Root Pruning of Container Grown Perennials Under Increasing Levels of Water Stress"

Nusret Ozbay, M.S.
Advisor: Charles Basham
Plan B

Craigie Elizabeth Succop, M.S.
Advisor: Steven E. Newman
Thesis:"Greenhouse Production of Fresh Market Basil"

Spring 1998

Erik Ervin, Ph.D.
Advisor: Anthony J. Koski
Thesis: “Morphological and Physiological Effects of Trinexapac-Ethyl, Traffic, and Nitrogen on Kentucky Bluegrass”

Amy Jo Waldo, M.S.
Advisor: James E. Klett
Thesis: “The Effects of Three Nursery Productions Methods on Tree Growth Rates”

Fall 1997

Darren Christopher Boyle , M.S.
Advisor: James E. Klett
Thesis:

Joyce Pennycooke, M.S.
Advisor: Harrison G. Hughes
Thesis: "Cryopreservation of Sweet Potato Shoot Tips by Vitrification"

Deric David Picton , M.S.
Advisor: Harrison G. Hughes
Thesis: "Characterization of ALSTROEMERIA SPECIES and Cultivars Using Random Amplified Polymorphic DNA (RAPD) Analysis"

Spring 1997

Imed Eddine Dami, Ph.D.
Advisor: Cecil Stushnoff
Thesis: "Physiological Responses of Grapevines to Environment Stresses"

Fall 1996

David Allen Hillock, M.S.
Advisor: James E. Klett
Thesis: "Herbaceous Perennials and Their Performance Under Increasing Levels of Drought Stress"

Julie Ann McIntyre, M.S.
Advisor: Douglas Hopper
Thesis: "Alternative Methods of Thrips Control"

Douglas Sean Moody, M.S.
Advisor: Douglas Hopper
Thesis: "Pulse Irrigation Strategies for Greenhouse Production"

Sarah Jane Wilhelm, M.S.
Advisor: Anthony J. Koski
Thesis: "Clipping and Nitrogen Rate Effects on Kentucky Bluegrass Fertility, Quality, and Drought Stress"

Summer 1996

Jian Fang , M.S.
Advisor: Frank A. Moore III
Thesis: "Factors Affecting the Loss of Viability When Maize Grains are Imbibed and Then Redried"

Roberta Jean Tolan, M.S.
Advisor: James E. Klett
Thesis: "Fabric Container Versus Traditional Tree Production Methods: A Post-Transplant Study"

Spring 1996

Kerrie Badertscher, M.S.
Advisor: Harrison G. Hughes
Plan B: "Growing Small Fruit Crops for the High Plains and Rocky Mountain West"

Steven James Keeley, Ph.D.
Advisor: Anthony J. Koski
Thesis: "Drought Performance of Diverse Kentucky Bluegrass Cultivars"

Fall 1995

Manfredo Seufferheld, Ph.D.
Advisor: Cecil Stushnoff
Thesis: "Cryopreservation of Cold-Tender Genetic Resources"

Spring 1995

Erik Hoyne Ervin, M.S.
Advisor: Anthony J. Koski
Thesis: "Performance of Kentucky Bluegrass, Tall Fescue, and Buffalograss Under Linear Gradient Irrigation"

Mark David Hanna, M.S.
Advisor: Cecil Stushnoff
Thesis: "Response of 'Red Lake' Currant and Red-Osier Dogwood to Cold Acclimation"

Janice Lyn Stephens, M.S.
Advisor: Harrison G. Hughes
Thesis: "Cytological and Biochemical Characterization of ALSTROEMERIA LEONTOCHIR and BOMAREA"

Fall 1994

Yu-Jen Chiang, M.S.
Advisor: Cecil Stushnoff
Thesis: "Anatomical Characterization of Desiccation Resistance in Strawberry Plantlets"

Margaret Shore, M.S.
Advisor: Harrison G. Hughes
Thesis: "Drip Irrigation of Plastic Mulched Strawberry Using Carbonated Water - A Greenhouse Study"

Shwu Hwa Wu, M.S.
Advisor: Harrison G. Hughes
Plan B: "An Overview of Synthetic Seed Technology"

Summer 1994

Hannelore Palmer, M.S.
Advisor:
Thesis:

Spring 1994

Masooma Ali-Ahmad, Ph.D.
Advisor: Harrison G. Hughes
Thesis: "Acclimatization of in vitro Grape Using Polyethylene Glycol"

Fall 1993

J. Thomas Smith
Advisor:
Thesis: "Factors Influencing Performance of Norgold Russet Seed Potatoes Grown in Southern Weld County, Colorado"

Muhammad Zubair, M.S.
Advisor:
Thesis: "Parallel Spatial Direct Numerical Simulations on the Intel IPSC/860 Hypercube [microform]"

Summer 1993

David Staats, M.S.
Advisor: James E. Klett
Thesis: "Evaluation of Quality and Water Conservation Potential of Non-Turf Groundcovers vs. Kentucky Bluegrass"

Spring 1993

Kimberly Gail Vanderpool Davidson, M.S.
Advisor: Frank A. Moore III
Thesis: "Individual Seed Electrolyte Leakage Tests and Evaluation of Soaking Injury Using Maize"

Diane Helene Fairchild, M.S.
Advisor:
Thesis:

Scott Gordon Reeves, M.S.
Advisor: James E. Klett
Thesis: "Napropamide Leaching in Container Nursery Media"

Anne Eyango Sama, M.S.
Advisor: Harrison G. Hughes
Thesis: "Rapid Micropropagation of Cocoyam (Xanthosoma Sagittifolium) Schott"

Fall 1992

Steven Earl Woerner, M.S.
Advisor: Douglas Hopper
Thesis: "Improved Quality and Water Use by Scheduling Irrigation for Greenhouse Production of Rosa hybrida L."

Summer 1992

Laura Freedman Gourley, M.S.
Advisor: Harrison G. Hughes
Plan B: "A Discussion of in vitro Plant Regeneration"

Pamela Ann Hosman, M.S.
Advisor: Harrison G. Hughes
Thesis: "White Drupelet Disorder of Red Raspberry Rubus ideaus L."

Spring 1992

Ronald Myles Dahlin, M.S.
Advisor: Anthony J. Koski
Thesis: "Kentucky Bluegrass and Tall Fescue Grown in Soil Amended with Cross-Linked Polyacrylamide Polymer"

Farida Safadi-Chamberlain, Ph.D.
Advisor: Harrison G. Hughes
Thesis: "Physiological Studies in Acclimation of in vitro Tobacco Plantlets"

Fall 1991

Imededdine Dami, M.S.
Advisor: Harrison G. Hughes
Thesis: "In vitro Acclimation of Tissue Cultured Grape (Vitis sp. 'Valiant') Plantlets"

Summer 1991

Denyse B. Cummins, M.S.
Advisor:
Thesis: "The Production of a Potted Freesia Crop Using Temperature Manipulation of Freesia x hybrida corms"

Gutierrez Francisco Lopez, Ph.D.
Advisor: Harrison G. Hughes
Thesis: "Physical and Chemical Alteration of Distichlis spicata L. Cell Walls With NaCI and Water Stress"

Susana Mejia, M.S.
Advisor:
Thesis:

Susan Adelaide Petersmann, M.S.
Advisor:
Thesis:

Spring 1991

Tigst Demeke, Ph.D.
Advisor: Harrison G. Hughes
Thesis: "Propagation, Pollen Storage, and in vitro Lemmatoxin Production of endod (Phytolacca dodecandra L.)"

Ricardo Novero, M.S.
Advisor: Frank D. Moore III
Thesis: "Yield Response of Mulched Field Grown Tomatoes Irrigated with Carbonated Water"

Emma Sue Waldorf, M.S.
Advisor: Harrison G. Hughes
Plan B: "Kaolin Clay Use as a UV-B Reflectant to Control White Drupelet Disorder in Rubus ideas cv. Heritage"

Fall 1990

Qaisra Ahmed, M.S.
Advisor: Harrison G. Hughes
Plan B

Alberto Luis Tupacyupanqui, Ph.D.
Advisor: Milt Workman
Thesis: "Factors Influencing Consumer Potato Storage in the Warm Tropics"

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