Found 73 results
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A
R. Contreras, Velez, J., and Golembiewsk, R., “Are Learning Styles, Study Habits, and Performance Correlated in Woody Plant Identification Students?”, HortTechnology, 2013.
B
R. Contreras and McAninch, G., “Back from the ban: new Buddleja cultivars receive exemption under ODA amendment”, Digger, pp. 33-36, 2013.
R. Contreras, “Bred for success”, Digger, pp. 41-45, 2011.
R. Contreras, Rothleutner, J. J., and Stockwell, V., “Breeding for fire blight resistance and sterility in Cotoneaster”, Proceedings of the 13th International Workshop on Fire Blight. Acta Hort, vol. 1056:221-223. 2014.
R. Contreras, “Breeding methods to reduce the invasive potential of nursery crops”. 2010.
R. Contreras and Horn, M., “Breeding to improve garden performance of Penstemon in the Willamette Valley: early stages”, Bulletin of the American Pestemon Society, vol. 73, pp. 68-72, 2014.
R. Contreras, “Bridging the gap: A new partnership between Oregon State University and LPDC designed to continue cultivar development.”, Landscape Plant News, 2010.
C
R. Contreras and Ruter, J. M., “Callicarpa evaluation and breeding at The University of Georgia Tifton Campus”, Landscape Plant News, vol. 20(2), pp. 3-5, 2009.
J. J. Rothleutner and Contreras, R., “Celebrating Cotoneaster”, Digger, pp. 33-36, 2012.
K. S. lattier and Contreras, R., “Chemical mutagenesis of Galtonia candicans Decne. results in altered morphology and reduced fertility”, Proc. 60th Ann. SNA Res. Conf. 60:XXX-XXX. 2015.
R. Contreras, Ruter, J., Owen, J. S., and Hoegh, A., “Chlorophyll, Carotenoid, and Visual Color Rating of Japanese-cedar Grown in the Southeastern United States”, HORTSCIENCE , vol. 48, no. 12, 2013.
B. M. Schwartz, Harris, K., Contreras, R., and Hanna, W., “Colchicine-induced tetraploidy in centipedegrass”. 2010.
J. D. Lattier and Contreras, R., “Colorimetric phenotyping of tetraploid progeny exhibiting incomplete dominance for flower color.”. 2014.
J. A. Schulze, Contreras, R., and Scagel, C. F., “Comparing Vegetative Propagation of Two ‘Schipkaensis’ Common Cherrylaurel Ploidy Levels”, HortTechnology, vol. 27, no. 1, pp. 69 - 72, 2017.
R. Contreras, Ruter, J. M., Conner, J., Zeng, Y., and Ozias-Akins, P., “Confirmation of hybridity using GISH and determination of 18S rDNA copy number using FISH in interspecific F 1 hybrids of Tecoma (Bignoniaceae)”, Genome, vol. 55, no. 6, pp. 437 - 445, 2012.
B. M. Schwartz, Harris-Schultz, K. R., Contreras, R., and Hans, C. S., “Creation of artificial triploid and tetraploid centipedegrass using colchicine and breeding”, Intl. Turfgrass Soc. Res. J., 2013.
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.
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.
D
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.
E
R. Contreras and Owen, J. S., “The Economy of Water”, Digger, pp. 139-144, 2011.
J. A. Schulze and Contreras, R., “Effect of ploidy level on vegetative propagation of two cytotypes of Prunus laurocerasus L. ‘Schipkaensis’.”, Combined Proceedings of the International Plant Propagators' Society 65. 2015.
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 ornamental potential”. 2008.

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