Found 73 results
Author Title [ Type(Desc)] Year
Filters: Author is Ryan Contreras  [Clear All Filters]
Journal Article
B. M. Schwartz, Harris-Shultz, K. R., Contreras, R., Hans, C. S., and Jackson, S. A., Creation of Hexaploid and Octaploid Zoysiagrass Using Colchicine and Breeding, Crop Science, vol. 53, no. 5, p. 2218, 2013.
R. Contreras and Ruter, J. M., Developing an evergreen, evergreen: Winter browning in Japanese cedar, Amer. Conifer Soc. Quarterly J., vol. 27(1), pp. 19-23, 2010.
R. Contreras, Determann, R., and Friddle, M. W., Differences in Winter Browning among Japanese-cedar Cultivars Are Not Due to Variation in Ploidy Levels, HortScience, vol. 46, no. 11, 2011.
B. M. Schwartz, Contreras, R., Harris-Schultz, K. R., Heckart, D. L., Peake, J. B., and Raymer, P. L., Discovery and characterization of a turf-type triploid seashore paspalum, HortScience, vol. 48, no. 12, 2013.
R. Contreras and Owen, J. S., The Economy of Water, Digger, pp. 139-144, 2011.
C. Landgren, Owen, J. S., and Contreras, R., Evaluating Soil and Foliar Fertilization of Abies nordmanniana Under Container and Field Production, Scandinavian Journal of Forest Research, vol. 28, no. 52, pp. 419 - 427, 2013.
R. Contreras and Ruter, J. M., Evaluation of Callicarpa spp. for utilization in a breeding program, Georgia Green Industry Association Journal, pp. 32-33, 2008.
R. Contreras, Owen, J. S., Hanna, W., and Schwartz, B. M., Evaluation of Seven Complex Pennisetum Hybrids for Container and Landscape Performance in the Pacific Northwestern United States, HortTechnology, vol. 23, no. 4, 2013.
R. Contreras and Rinehart, T., An express route to perfection, Digger, pp. 47-50, 2012.
R. Contreras, Ruter, J., and Knauft, D., Flower, fruit, and petiole color of american beautyberry (Callicarpa americana L.) are controlled by a single gene with three alleles, HortScience, vol. 49, no. 4, pp. 422-424, 2014.
K. J. Vining, Contreras, R., Ranik, M., and Strauss, S. H., Genetic methods for mitigating invasiveness of woody ornamental plants: Research needs and opportunities., HortScience, vol. 47, no. 9, 2012.
R. Contreras and Ruter, J., Genome Size Estimates and Chromosome Numbers of Callicarpa L. (Lamiaceae), HortScience, vol. 46, no. 4, 2011.
J. D. Lattier, Chen, H., and Contreras, R., Improved Method of Enzyme Digestion for Root Tip Cytology, HortScience, vol. 52, no. 7, pp. 1029 - 1032, 2017.
R. Contreras and Lattier, J. D., Improving a garden classic., Digger, pp. 47-50, 2014.
R. Contreras and Meneghelli, L., In Vitro Chromosome Doubling of Prunus laurocerasus ‘Otto Luyken’ and ‘Schipkaensis’, HortScience, vol. 51, no. 12, pp. 1463 - 1466, 2016.
J. A. Schulze, Lattier, J. D., and Contreras, R., In vitro germination of immature Prunus lusitanica seed, HortScience, vol. 52, no. 8, 2017.
J. A. Schulze and Contreras, R., In Vivo Chromosome Doubling of Prunus lusitanica and Preliminary Morphological Observations, HortScience, vol. 52, no. 3, pp. 332 - 337, 2017.
J. D. Lattier and Contreras, R., Intraspecific, Interspecific, and Interseries Cross-compatibility in Lilac, Journal of the American Society for Horticultural Science, vol. 142, no. 4, pp. 279 - 288, 2017.
R. Contreras, Ranney, T. G., Milla-Lewis, S. R., and Yencho, G. C., Investigating parentage and hybridity of three azaleodendrons using AFLP analysis, HortSCience, vol. 42, no. 3, 2007.
R. Contreras and Ranney, T. G., New opportunities for breeding fragrant rhododendrons, Journal of American Rhododendron Society, vol. 62, no. 4, 2008.
R. Contreras and Friddle, M. W., ‘Oregon Snowflake’ Flowering Currant, HORTSCIENCE , vol. 50, no. 3, 2015.
R. Contreras, Ruter, J., and Hanna, W., An Oryzalin-induced Autoallooctoploid of Hibiscus acetosella ‘Panama Red’, Journal of American Horticultural Science, vol. 134, no. 5, 2009.
R. Contreras, Ruter, J., and Schwartz, B. M., Oryzalin-induced Tetraploidy in Cryptomeria japonica (Cupressaceae), HortScience, vol. 45, no. 2, 2010.
K. Shearer-Lattier and Contreras, R., Penstemon breeding in the Willamette Valley: A lesson in flexibility, Bulletin of the American Pestemon Society, 2015.
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.

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