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Last updated on Friday, September 07, 2012     Make new updates ->

Kenneth W  Leonhardt

Name:  

Kenneth W Leonhardt

Title:  

Spec in Hort

Address:

3190 Maile Way
                    Honolulu, HI 96822

Phone:  

(808)956-8909

Fax  :

(808)956-3894

E-mail:  

leonhard@hawaii.edu

Specialties:  

Ornamental crops, with emphasis on Protea and landscape trees.


Education:


Ph.D., Horticulture, University of Hawaii at Manoa, HI 1977
M.S., Horticulture, University of Hawaii at Manoa, HI 1973
B.S., Horticulture, California State Polytechnic University, Pomona, CA. 1971
HS Diploma, Royal Oak, Covina, CA. 1968


Projects:


Graduate Student Committees (since 2006)
David Lingenfelser, MS, 2012, Chair
Robert Saito, MS, 2012, Chair
Sterling Thomas, MS, 2012
Liz Huppman, PhD, 2012
Huang Yu, PhD, 2012
Peter Wiggins, MS, 2011
Tilden Miguel, MS, 2010, Chair
Will Rehrig MS, 2008
Emily Teng, MS, 2007, Chair
Thomas Littleton, MS, 2007, Chair
Hideko Kasahara, MS, 2007
Susana Vanzie-Canton, MS, 2006, Chair
 
Memberships
International Society for Horticulture (ISHS)
Chairman, International Protea Working Group (IPWG), 2002-2010


Courses Taught:


TPSS 200, Tropical Crop Production, 36 years (14 yrs as writing intensive)
TPSS 364, Horticulture Practices, 1 year
TPSS 402, Flower and Foliage Crop Production, 2 years
TPSS 492, Internship (writing intensive), 11 years
TPSS 664, Orchidology, 1 year
TPSS 499, directed studies, most semesters
TPSS 699, directed research, most semesters


Research Interests:


Developing improved varieties of ornamental plants for commercial producers.
 
Websites:
 
 
Some Photos: 
 
field trip
TPSS students on field trip to California & Hawaii Foliage, Big Island  
 
big island palm trip
TPSS students on field trip to Florabunda Palms, Big Island  
pacproduce
TPSS Hort Society students on field trip to Pacific Produce, Maui  
 
[hort] bamboo
TPSS Hort Society students on field trip to Whispering Winds Bamboo Farm, Maui  
 
[hort] howard's
TPSS Hort Society students on field trip to Howard's Nursery, Maui  
 
[hort] NTBG Kahana
TPSS Hort Society students on field trip to National Tropical Botanical Garden Kahana, Maui  
 
Sailfish group
A good day of fishing off Oahu  
 
grad student lunch
Ken and graduate students: Emily Teng (North Carolina), Susana Vanzie-Canton (Belize), and Thomas Littleton (Costa Rica) 

ken and susana
Susana's first international conference, Madeira, Portugal, 2007 
 
no bull
Thomas in habitat, no bull 
 
susana
Susana preparing samples for flow cytometry  
 
polyploid stephanotis
Polyploid stephanotis for lei and landscape purposes, created by Susana
 
emily
Emily transplanting tetraploid dracaena she created  
 
jeana making hybrids
Jeana Cadby making shower tree hybrids  
 
IMG_0972
Ken at Agave tequilana plantation, Tampico, Mexico, 2006  
 
Waimanalo Christmas Parade
Ken and Lita representing CTAHR in the Waimanalo Christmas Parade in their 1924 Model T Ford  
 
germplasm_ken
Ken at the International Conference on Germplasm of Ornamentals, Beijing, China, July 2012
 


Publications:


Invited Keynote International Conference Presentations
Cultivar Development of Ornamentals using Leucospermum as an Example. 
International Conference on Germplasm of Ornamentals, ISHS, Beijing, 
China, July 2012.
 
Leucospermum Breeding and Cultivar Development at the University of 
Hawaii.  Jornadas Internacionales sobre la produccion y exportacion de 
PROTEAS en Canarias. Santa Cruz de Tenerife, Canary Islands, Spain. 
March 2007. 
 
World Production of Tropical Cutflowers and Ornamental Plants. Flora 
Filipina Conference on Sustainable Floriculture Industry in Asia. Manila, 
Philippines. February 2006. 
 
Presentations at Scientific Conferences 
Producing Sterile Forms of Prolific Seed Producing Landscape Species.
International Conference on Germplasm of Ornamentals, ISHS, Beijing, 
China, July 2012.
 
Creating Non-fruiting Forms of Prolific Seed Producing Landscape Species. 
ASHS, Waikoloa, Hawaii, Sept. 2011 (invited).
 
Breeding and Selection of Leucospermum Hybrids for Tropical Climates. 
ASHS, Waikoloa, Hawaii, Sept. 2011 (invited).
 
Creating Sterile Forms of Prolific Seed Producing Landscape Species. 
Society of American Foresters, Honolulu, Hawaii, Nov. 2011 (invited).
 
Identification of Leucospermum Hybrids for Tropical Climates. IX 
International Protea Research Symposium. ISHS. Stellenbosch, South 
Africa. September 2008.
 
Production of Tetraploid forms of Eight Landscape Tree Species. VI 
International Symposium on New Floricultural Crops, ISHS. Madeira, 
Portugal. June 2007.
 
Evaluation of Leucospermum Hybrids for Warm-temperature Tolerance. 
VIII International Protea Research Symposium. ISHS. San Diego, 
California. April 2006.
 
Invited Presentations at Local and International Industry Conferences
Breeding Warm Temperature Tolerant Leucospermum Cultivars for Hawaii 
Growers. Hawaii Floriculture Risk Management School, Hilo, Hawaii. July 
2012.
 
Dendrobium Production and Marketing in Hawaii and Asia. Flora Filipina 
Expo and Conference. Manila, Philippines. February 2009.
 
Inducing Sterility into Invasive Ornamental Plants by Chromosome 
Manipulation. Flora Filipina Expo and Conference. Manila, Philippines. 
February 2009.
 
Cycads of the World. Flora Filipina Expo and Conference. Manila, 
Philippines. February 2009.
 
Research on Creating Sterile Street Trees. The 2009 Landscape Industry 
Council of Hawaii, Green Industry Conference. Honolulu, Hawaii. Oct. 
2009. 
 
Cycads for Hawaii Landscapes. The 2009 Landscape Industry Council of 
Hawaii, Green Industry Conference. Honolulu, Hawaii. Oct. 2009. 
 
Recent Research in Development of Seedless Street Trees; and New 
Ornamental Cultivars. The 2008 Landscape Industry Council of Hawaii 
Conference & Trade Show. Honolulu, Hawaii. May 2008.
 
Development of New Ornamental Plant Varieties. Hawaii MIDPAC Expo 
and Conference, Hilo, Hawaii. July 2007.
 
New UH Variety Development: Non-Fruiting Trees, Flowering Gingers, 
Dracaenas, & Low Elevation Proteas for Hawaii Landscapes. Landscape 
Industry Council of Hawaii 2007 Green Industry Conference & Tradeshow. 
Honolulu, Hawaii. May 2007.
 
Development of New Ornamental Plant Varieties. Hawaii MIDPAC Expo 
and Conference, Hilo, Hawaii. Oct. 2006.
 
New Protea Cultivars from the University of Hawaii. Hawaii Orchid 
Growers Association 2005 Conference, Mini Trade Show & Nurseries Open 
House. Hilo, Hawaii. Oct. 2005.
 
Development of New Ornamental Plant Varieties. Hawaii MIDPAC Expo 
and Conference, Hilo, Hawaii. Oct. 2005.
 
Selected publications since 2005
Research publications (referred)
 
Miguel, T.P. and K.W. Leonhardt. 2011. In Vitro Polyploid induction of 
orchids using oryzalin. Scientia Horticulturae. 130: 314-319.
 
Leonhardt, K.W. and X. Shi. 2009. Production of tetraploid forms of eight 
landscape tree species. VI Internl Symposium on New Floricultural Crops, 
ISHS. Madeira, Portugal. Acta Hort. 813: 133-139.
 
Teng, E.S. and K.W. Leonhardt. 2009. Optimum irradiation dosage of 
unrooted Dracaena cuttings for mutation induction. VI Internl Symposium 
on New Floricultural Crops, ISHS. Madeira, Portugal. Acta Hort. 813: 517-
522.
 
Teng, E.S. and K.W. Leonhardt. 2009. In vitro and in vivo polyploidization 
of Dracaena with oryzalin. VI Internl Symposium on New Floricultural 
Crops, ISHS. Madeira, Portugal. Acta Hort. 813: 509-515.
 
Vanzie-Canton, S.D. and K.W. Leonhardt. 2009. In vivo polyploidzation of 
Zamioculcas zamiifolia. VI Internl Symposium on New Floricultural Crops. 
ISHS. Madeira, Portugal. Acta Hort. 813: 531-537.
 
Vanzie-Canton, S.D. and K.W. Leonhardt. 2009. Polyploidization of 
Marsdenia floribunda. VI Internl Symposium on New Floricultural Crops. 
ISHS. Madeira, Portugal. Acta Hort. 813: 523-529.
 
Vanzie-Canton, S.D. and K.W. Leonhardt. 2009. In vitro callus induction 
and plantlet regeneration protocol development for the oryzalin treatment of 
Zamioculcas zamiifolia. VI Internl Symposium on New Floricultural Crops. 
ISHS. Madeira, Portugal. Acta Hort. 813: 201-207.
 
Leonhardt, K.W., T.E. Littleton and M.G. Wright. 2008. Evaluation of 
Leucospermum hybrids for warm-temperature tolerance. VIII International 
Protea Research Symposium. ISHS. San Diego, California. Acta Hort. 805: 
81-91.
 
Criley, R. A., K.W. Leonhardt, D. Oka and P. Shingaki. 2008. Extending the 
flowering period of Leucospermum hybrids through disbudding. Acta. Hort. 
766: 183-186.
 
Leonhardt, K.W., P. Shingaki, P. Nakao and D. Oka. 2005. Screening for 
Warm-Temperature Tolerant Leucospermum (Proteaceae) Hybrids for 
Cultivation in Low-Elevation Climates in Hawaii. Acta Hort. Vol. 683: 223-
232. CTAHR J. Ser. No. 4658.
 
Research and Extension publications (non-referred)
 
Cadby J. and K.W. Leonhardt. 2011. (poster) Identification and selection of 
Oryzalin-induced tetraploid species for use in breeding sterile, non-invasive 
landscape tree species. CTAHR Student Research Symposium. CTAHR, 
UHM.
 
Leonhardt, K.W. 2009. (poster) 100 New University of Hawaii Protea 
Varieties created for Hawaii growers. 
http://www.ctahr.hawaii.edu/leonhardtk/Proteaposter.pdf
 
Leonhardt, K.W. 2008. Cymbidium species and hybrids for the Asian 
tropics. Proc. The Fourth Asia Pacifiic Orchid Conference. Chiang Mai, 
Thailand. Chiang Mai University. 
 
Leonhardt, K.W. and J.M. Halloran. 2008. Dendrobium production 
technology in Hawaii. Proc. The Fourth Asia Pacifiic Orchid Conference. 
Chiang Mai, Thailand. Chiang Mai University.
 
Halloran, J.M., S.T. Nakamoto, K. Wanitprapha and K.W. Leonhardt. 2008.  
United States retail and wholesale florists’ perceptions of dendrobium 
orchids and buying practices. Proc. The Fourth Asia Pacifiic Orchid 
Conference. Chiang Mai, Thailand. Chiang Mai University. 
 
Leonhardt, K.W., P. Shingaki, P. Nakao, T. Jewell, T. Miguel and D. Oka. 
2005. New Cultivars from the University of Hawaii Protea Research Project 
- 1999 to 2004. Proc: Hawaii Floriculture Conference, CTAHR, UHM. pp. 
53-79.
 
Caines, C. and K.W. Leonhardt. 2005. New Ornamental Ginger Cultivars 
for Hawaii Cut Flower Growers. Proc: Hawaii Floriculture Conference, 
CTAHR, UHM. pp. 25-27 & 80.
 
Littleton, T. and K. Leonhardt. 2005. (poster) Influence of Wounding, 
Terminality, and Auxin Concentration on the Rooting of Stem Cuttings 
of Four Leucospermum Species. CTAHR Student Research Symposium. 
CTAHR, UHM.
 
Miguel, T., K.W. Leonhardt and Y. Sagawa. 2005. (poster) Polyploid 
Induction of Orchids Using Oryzalin for Stud Plant Improvement. CTAHR 
Student Research Symposium. CTAHR, UHM.
 
Miguel, T., K.W. Leonhardt and J.T. Kunisaki. 2005. (poster) In Vitro 
Establishment of Protea 'Venus' and Protea aristata. CTAHR Student 
Research Symposium. CTAHR, UHM.
 
Miguel, T., K.W. Leonhardt and Y. Sagawa. 2005. (poster) Polyploid 
Induction of Orchids Using Oryzalin for Stud Plant Improvement. CTAHR 
Student Research Symposium. CTAHR, UHM.
 
Teng, E., P.L. Nakao, J.S. Lichty and K.W. Leonhardt. 2005. (poster) Use 
of GA3 and Cold Temperature Treatments to Induce Flowering in Dracaena. 
CTAHR Student Research Symposium. CTAHR, UHM.
 
Vanzie-Canton, S. and K. Leonhardt. 2005. (poster) Identifying a Suitable 
Medium for the In Vitro Establishment and Multiplication of Fatshedera 
lisei. CTAHR Student Research Symposium. CTAHR, UHM.
 
Volumes edited (since 2005)
Leonhardt, K.W. and R.A. Criley. (eds). 2012. Bulletin. Journal of the 
Heliconia Society International. Vol. 18(2), June 2012. 16 p.
 
Leonhardt, K.W. and R.A. Criley. (eds). 2012. Bulletin. Journal of the 
Heliconia Society International. Vol. 18(1), March 2012. 16 p. 
 
Leonhardt, K.W. and R.A. Criley. (eds). 2011. Bulletin. Journal of the 
Heliconia Society International. Vol. 17(4), Dec. 2011. 16 p. 
 
Leonhardt, K.W. and R.A. Criley. (eds). 2011. Bulletin. Journal of the 
Heliconia Society International. Vol. 17(3), Sept. 2011. 16 p. 
 
Leonhardt, K.W. and R.A. Criley. (eds). 2011. Bulletin. Journal of the 
Heliconia Society International. Vol. 17(2), June 2011. 16 p. 
 
Leonhardt, K.W. and R.A. Criley. (eds). 2011. Bulletin. Journal of the 
Heliconia Society International. Vol. 17(1), March 2011. 16 p. 
 
Leonhardt, K.W. and R.A. Criley. (eds). 2010. Bulletin. Journal of the 
Heliconia Society International. Vol. 16(4), Dec. 2010. 16 p. 
 
Leonhardt, K.W. and R.A. Criley. (eds). 2010. Bulletin. Journal of the 
Heliconia Society International. Vol. 16(3), Oct. 2010. 16 p. 
 
Leonhardt, K.W. (ed). 2009. Protea Newsletter International, Vol. 2, No. 1, 
April 2009, 25 p.
www.ctahr.hawaii.edu/leonhardtk/PNI_2.pdf
 
Leonhardt, K.W. (ed). 2008. Proc. of the Eighth International Protea 
Research Symposium. ISHS. San Diego, California. Acta Horticulturae. Vol. 
805. 136 p. 
 
Leonhardt, K.W. (ed). 2008. Protea Newsletter International, Vol. 1, No. 1, 
November 2008, 19 p. 
www.ctahr.hawaii.edu/leonhardtk/PNI1_1.pdfGerber, A.I. and K.W. Leonhardt. (eds). 2006. Proc. of the Seventh 
International Protea Research Symposium. ISHS. Melbourne, Australia. 
Acta Horticulturae. Vol. 716. 154 p. 
 
Leonhardt, K.W. and P. Nakao (eds). 2005. Proc. Hawaii Floriculture Conf, 
CTAHR, UHM. P-04/05. 115 p.