Ellen Peffley, Ph.D.
Professor of Vegetable Crops, Department of Plant and Soil Science
Center Associate, CASNR Water Center

TTU, Department of Plant and Soil Science, Room 101, P.O. Box 42122, Lubbock, TX 79409
806.742.2637 |   806.742.0775
ellen.peffley@ttu.edu
http://www.pssc.ttu.edu/techhort/

Education

• Ph.D., Agronomy, New Mexico State University (1985)
• M.S., Horticulture, New Mexico State University (1981)
• B.S., Horticulture, New Mexico Staate University (1977)

Dr. Ellen Peffley's principal research interest focuses on cytogenetics, plant breeding, molecular marker assisted selection for crop improvement, plant tissue culture, and hydroponic strategies for vegetables. Her recent publications examines the development of an online Horticulture degree from Texas Tech, the effects of plant density, carbon dioxide, and harvest intervals on biomass of three Allium species, and the flanvolal levels and sensory characteristics ofAllium cultivars grown hydroponically at ambient and elevated carbon dioxide levels.

Dr. Peffley is a member of the American Association for the Advancement of Science, the Council for Agricultural Science and Technology, the Southern Region American Society for Horticultural Science, the Texas State Horticultural Society, and the West Texas Shippers and Growers Association. She was recognized as a Distinguished Professor by Mortar Board (2003) and the Chancellor's Council Award for Distinguished Teaching (2005). She serves as the Scientific Expert for the International Food Information Council Foundation, a past consulting editor for the journal of the American Society for Horticultural Science, and 2006 NSF Graduate Research Fellow.

Courses Taught
Principles of Horticulture, Plant Progation Methods, Special Problems in Horticulture, Transgenics and Plant Cell Genetics

Selected Publications

• Peffley, E. B. 6 Genome Complexity of Allium". Plant Genome: Biodiversity and Evolution Volume D: Phanerogams (Gymnosperm and Angiosperm) – Monocotyledons. accepted.
• van Gestel, N.C., A.D. Nesbit, E.P. Gordon, C. Green, P.W. Pare, L. Thompson, E.B. Peffley and D.T. Tissue. 2005. Continuous light may induce photosynthetic down-regulation in onion – consequences for growth and biomass partitioning. Physiologia Plantarum 125:235-246.
• Thompson, L. D., J. Morris, E. B. Peffley, C. Green, P. Pare, D. Tissue, J. Hutson, J. Johnson, B. Wehner and C. Kane. 2005. Flavonol content and composition of spring onions (Allium cepa L.) grown in hydroponics in a greenhouse. J. Food Comp and Analysis 18:635-645.
• Peffley, E. B. and C. S. Davis. 2005. Next Generation of Scientists is inspired at an early age. Society of Automotive Engineers.05ICES-325.
• McKenney C. B., E. B. Peffley, and G. Teolis. 2005. A comparison of asynchronous communication levels with students enrolled in compressed video, internet and traditional classes. Acta Horticulturae. (ISHS) 641:79-84.
• Mangum, P. D. and E. B. Peffley. 2005. Central cell nuclear-cytoplasmic incongruity; a mechanism for segregation distortion in advanced backcross and selfed generations of (Allium cepa L. X Allium fistulosum L.) X A. cepa interspecific hybrid derivatives. Cytogenetic and Genome Research. Plant Cytogenetics 109 (1-3): 400-407.
• Peffley, E. B., R. E. Durham, C. B. McKenney, and J. Wilmington. 2003. Introductory Horticulture. Kendall Hunt Publishing Company. 2nd Edition, 2nd printing. ISBN 0-7872-6218-8.