Skip to main content
OREGON STATE UNIVERSITY
Open search box
»
College of Agricultural Sciences
Toggle menu
Go to search page
Search Field
Exit Search
About
Employee Directory
Student Success Initiative
Research
Outreach and Extension
Agricultural Sciences and Natural Resources Extension Program
Faculty Resources
Extension Agriculture Peer Teaching Evaluation Forms
Outreach Programs
Units
Department and Program Leaders
Calendar
Library
Maps
Online Services
Make a Gift
About
Employee Directory
Student Success Initiative
Research
Outreach and Extension
Agricultural Sciences and Natural Resources Extension Program
Faculty Resources
Extension Agriculture Peer Teaching Evaluation Forms
Outreach Programs
Units
Department and Program Leaders
Biblio
Found 73 results
Author
Title
[
Type
]
Year
Filters:
Author
is
Ryan Contreras
[Clear All Filters]
Journal Article
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.
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
,
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
,
“
A Simple Chromosome Doubling Technique Is Effective for Three Species of Cupressaceae
”
,
HortScience
, vol. 47, no. 6, pp. 712-714, 2012.
R. Contreras
and
Ruter, J.
,
“
Sulfuric acid scarification of Callicarpa americana L. (Lamiaceae) seeds improves germination
”
,
Native Plants Journal
, vol. 10, no. 3, 2009.
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.
E. Tomasino
and
Contreras, R.
,
“
Volatile analysis of three Philadelphus L. parents and resulting progeny.
”
,
HortScience
, Submitted.
Presentation
R. Contreras
,
“
Breeding methods to reduce the invasive potential of nursery crops
”
. 2010.
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.
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.
R. Contreras
and
Ruter, J. M.
,
“
Evaluation of Callicarpa spp. for ornamental potential
”
. 2008.
R. Contreras
and
Ruter, J. M.
,
“
Fruit color in American beautyberry is controlled by a single gene
”
. 2010.
J. J. Rothleutner
and
Contreras, R.
,
“
Genome size estimates for Cotoneaster spp.
”
. 2011.
B. M. Schwartz
,
Contreras, R.
,
Harris-Schultz, K. R.
, and
Raymer, P. L.
,
“
Identification or Creation of a Putative Triploid Seashore Paspalum
”
. 2012.
R. Contreras
and
Meneghelli, L.
,
“
In Vitro Chromosome Doubling of Prunus laurocerasus ‘Otto Luyken’
”
. 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.
B. M. Schwartz
,
Contreras, R.
, and
Hanna, W. W.
,
“
Manipulating the Chromosome Number of Zoysiagrass
”
. 2013.
K. Shearer-Lattier
and
Contreras, R.
,
“
Non-targeted mutagenesis of Galtonia candicans by exposing seeds to EMS
”
. 2014.
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.
T. Einhorn
,
Gibeaut, D.
,
Contreras, R.
, and
Whiting, M. David
,
“
Polyploidy of cells in sweet cherry fruit
”
. 2012.
R. Contreras
and
Ranney, T. G.
,
“
Reproductive behavior of diploid and allotetraploid azaleodendrons
”
. 2006.
J. J. Rothleutner
and
Contreras, R.
,
“
Variable Fire Blight Resistance Among 31 species of Cotoneaster
”
. 2012.
Pages
« first
‹ previous
1
2
3