Found 73 results
Author Title [ Type(Asc)] Year
Filters: Author is Ryan Contreras  [Clear All Filters]
Presentation
J. J. Rothleutner and Contreras, R., Variable Fire Blight Resistance Among 31 species of Cotoneaster. 2012.
R. Contreras and Ranney, T. G., Reproductive behavior of diploid and allotetraploid azaleodendrons. 2006.
T. Einhorn, Gibeaut, D., Contreras, R., and Whiting, M. David, Polyploidy of cells in sweet cherry fruit. 2012.
R. Contreras and Ruter, J. M., An oryzalin induced polyploidy from a hybrid of Hibiscus acetosella x H. radiatus(Malvaceae) exhibits reduced fertility and altered morphology. 2009.
K. Shearer-Lattier and Contreras, R., Non-targeted mutagenesis of Galtonia candicans by exposing seeds to EMS. 2014.
B. M. Schwartz, Contreras, R., and Hanna, W. W., Manipulating the Chromosome Number of Zoysiagrass. 2013.
R. Contreras, Ruter, J. M., Conner, J., Zeng, Y., and Ozias-Akins, P., Interspecific hybridization in Tecoma Juss. (Bignoniaceae): Confirmation of hybridity using GISH and morphology. 2011.
R. Contreras and Meneghelli, L., In Vitro Chromosome Doubling of Prunus laurocerasus ‘Otto Luyken’. 2013.
B. M. Schwartz, Contreras, R., Harris-Schultz, K. R., and Raymer, P. L., Identification or Creation of a Putative Triploid Seashore Paspalum. 2012.
J. J. Rothleutner and Contreras, R., Genome size estimates for Cotoneaster spp.. 2011.
R. Contreras and Ruter, J. M., Fruit color in American beautyberry is controlled by a single gene. 2010.
R. Contreras and Ruter, J. M., Evaluation of Callicarpa spp. for ornamental potential. 2008.
D. Gibeaut, Contreras, R., Einhorn, T., and Whiting, M. David, Cropload affects the size, but not the number or polyploidy of cells in sweet cherry fruit.. 2011.
J. D. Lattier and Contreras, R., Colorimetric phenotyping of tetraploid progeny exhibiting incomplete dominance for flower color.. 2014.
B. M. Schwartz, Harris, K., Contreras, R., and Hanna, W., Colchicine-induced tetraploidy in centipedegrass. 2010.
R. Contreras, Breeding methods to reduce the invasive potential of nursery crops. 2010.
Journal Article
E. Tomasino and Contreras, R., Volatile analysis of three Philadelphus L. parents and resulting progeny., HortScience, Submitted.
J. D. Lattier, Chen, H., and Contreras, R., Variation in genome size, ploidy, stomata, and rDNA signals in althea (Hibiscus syriacus L.), Hort. Res., Submitted.
R. Contreras and Ruter, J., Sulfuric acid scarification of Callicarpa americana L. (Lamiaceae) seeds improves germination, Native Plants Journal, vol. 10, no. 3, 2009.
R. Contreras, A Simple Chromosome Doubling Technique Is Effective for Three Species of Cupressaceae, HortScience, vol. 47, no. 6, pp. 712-714, 2012.
J. J. Rothleutner, Contreras, R., Stockwell, V., and Owen, J. S., Screening Cotoneaster for Resistance to Fire Blight by Artificial Inoculation, HortScience, vol. 49, no. 12, 2014.
R. Contreras, Ranney, T. G., and Tallury, S. P., Reproductive behavior of diploid and allotetraploid Rhododendron L. ‘Fragrant Affinity’, HortScience, vol. 42, no. 1, 2007.
J. J. Rothleutner, Friddle, M. W., and Contreras, R., Ploidy Levels, Relative Genome Sizes, and Base Pair Composition in Cotoneaster, Journal of the American Society for Horticultural Science, vol. 141, no. 5, pp. 457 - 466, 2016.
J. D. Lattier and Contreras, R., Ploidy and Genome Size in Lilac Species, Cultivars, and Interploid Hybrids, Journal of the American Society for Horticultural Science, vol. 142, no. 5, pp. 355 - 366, 2017.
K. Shearer-Lattier and Contreras, R., Penstemon breeding in the Willamette Valley: A lesson in flexibility, Bulletin of the American Pestemon Society, 2015.

Pages