Progress 10/01/02 to 10/01/03
Outputs
Breeding studies are continuing with Aglaonema, Anthurium, Dieffenbachia, Spathiphyllum and Syngonium. We have developed an interspecific Spathiphyllum hybrid that may be a potential bridge-cross parent to facilitate infusing new genetic material into commercial Spathiphyllum. The plant is sterile but has been established in tissue culture where it can be treated with colchicine to develop a polyploidy from that can the be used in breeding. Anthurium `Orange Hot' has been released to Florida propagators. In addition, two Aglaonema hybrids (`Diamond Bay' and Moonlight Bay') have been released to Florida propagators. Gibberellic acid treatment has been used to successfully to induce flowering of Phlodendron. We have also published a review article that summarizes cultivar development activity in ornamental tropical foliage plants (listed in the publication section). This paper can be used as a reference by anyone with an interest in breeding foliage plants.
Impacts
New cultivar development is an indication of a progressive industry as well as provid better products for the consumer.
Publications
- Henny, R.J. and J. Chen. 2003. Cultivar development of ornamental foliage plants. Plant Breeding Review 23:245-290.
- Chen, J., R.J. Henny, D.B. McConnell, and R.D. Caldwell. 2003. Gibberellic acid affects growth and flowering of Philodendron `Black Cardinal'. Plant Growth Regulation 40:
- Henny, R.J., J. Chen, and D.J. Norman 2003. Aglaonema 'Diamond Bay' and 'Emerald Bay'. HortScience (in press, 4 pages).
- Henny, R.J., D.J. Norman, and J. Chen. 2003. 'Orange Hot' Anthurium. HortScience 38:133-134.
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Progress 12/03/98 to 09/30/03
Outputs
Epipremnum has also recently been incorporated into the breeding program. Selected plants are being grown on large poles and will be induced to flower for subsequent pollination studies. Previously, seed has been produced from only one Epipremnum inflorescence, which indicates that the genetic potential of this genus has not be exploited. Concomitantly, we are working with Dr. Chen and have been able to produce Epipremnum plants from leaf and petiole sections via somatic embryos. This system is now being used to propagate several new mutants that we have developed. We plant to screen large populations of plants for desirable mutants as well as provide industry a means to rapidly produce new cultivars. Epipremnum has not been commercially produced in a tissue culture system before. Our current studies will document the complete production system from the test tube to finished product. A summary of ornamental tropical foliage plant cultivars released includes: Aglaonema
Stripes 1988; Aglaonema Flamingo 1992; Aglaonema Silver Bay 1992; Aglaonema Golden Bay 1999 (PP 10,140); Aglaonema Emerald Bay 2000 (PP 12,867); Aglaonema Moonlight Bay 2001 (ppaf); Aglaonema Diamond Bay 2001 (ppaf); Dieffenbachia Triumph 1986; Dieffenbachia Victory 1986; Dieffenbachia Tropic Star 1987; Dieffenbachia Starry Nights 1988; Dieffenbachia Star White 1992; Dieffenbachia Sparkles 1994 (PP 9,050); Dieffenbachia Star Bright 1994 (PP 9,051); Dieffenbachia Sterling 2002 (PP 14,762); Dieffenbachia Tropic Honey 2002 (ppaf); Dieffenbachia GoldRush 2002 (ppaf); Anthurium Southern Blush 1987; Anthurium Red Hot 1995 (PP 9,355); and Anthurium Show Biz 1999 (PP 8,820).
Impacts
New ornamental aroid cultivars each could have a value of several million dollars during their lifetime. New cultivars are the key to an expanding foliage plant industry in Florida.
Publications
- Chen, J., D.B. McConnell and R.J. Henny. 2004. Light Induced Coordinative Changes in Leaf Variegation between Mother Plants and Daughter Plantlets of Chlorophytum comosum Vittatum. Proc. VII ISHS on Prot. Cult. Mild Winter Climates. Pp 453-459.
- Devanand, P.S., J. Chen, R.J. Henny and C.T. Chao. 2004. Assessment of Genetic Relationships among Philodendron Cultivars Using AFLP Markers. J. Amer. Soc. Hort. Sci. 129(5):690-697.
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Progress 10/01/01 to 10/01/02
Outputs
Breeding studies are being conducted with Aglaonema, Anthurium, Dieffenbachia, Spathiphyllum and Syngonium. Currently the main focuses are chilling resistance in Aglaonema and disease resistance in Anthurium (Xanthomonas), Syngonium (Myrothecium and Xanthomonas) and Spathiphyllum (Cylindrocladium). Several Syngonium species were identified with resistance to Myrothecium leaf spot and have been incorporated into our breeding program. They have been treated with gibberellic acid to induce flowering. Three Dieffenbachia cultivars were released during 2002 and included `Tropic Honey', `Sterling' and `GoldRush'. Several species and cultivars of Aglaonema and Dieffenbachia are being subjected to DNA analysis with the goal to determine the genetic relationships and the relative amount of genetic diversity in those genera. Results will be beneficial in long range planning of aroid breeding strategies.
Impacts
New cultivars indicate the progressive nature of an industry as well as providing better products for the consumer.
Publications
- Norman, D.J., R.J. Henny, J.M.F. Yuen and T.A. Mellich. 2002. Screening for resistance to Myrothecium leaf spot among Syngonium species and cultivars. HortScience: (In Press).
- Chen, J., R.J. Henny and D.B. McConnell. 2002. Development of new foliage plant cultivars. Trends in new crops and new uses. ASHS Press, Alexandria, VA. J. Janick and A. Whipkey (eds.). p. 466-472
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Progress 10/01/00 to 10/01/01
Outputs
Breeding studies are being conducted with Aglaonema, Anthurium, Dieffenbachia, Spathiphyllum and Syngonium. Aglaonema `Silver Bay' and Anthurium `Red Hot' are two of the top cultivars in Florida. Demand for other new cultivars is increasing based on their success. Three new cultivars were released during 2001. These included Aglaonema `Emerald Bay', Aglaonema `Diamond Bay' and Anthurium `Orange Hot'. Several other Dieffenbacdhia, Aglaonema and Anthurium hybrids are being trail grown around Florida.
Impacts
New ornamental tropical foliage plant cultivars can have a dramatic impact in industry. New cultivars are good tools for showcasing the progressive nature of the industry as well as providing better products for the consumer.
Publications
- Henny, R.J. and D.J. Norman. 2001. Anthurium `Show Biz' . HortScience:36(6):1140-1141.
- Henny, R.J. and J. Chen. 2001. Aglaonema `Golden Bay'. HortScience:36(6):1142-1143.
- D.J. Norman, R.J. Henny, J.M..Y. Yuen and T.A. Mellich. 2001. Screening for Resistance to Myrothecium Leaf Spot among Syngonium Species and Cultivars (accepted for publication in HortScience).
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Progress 10/01/99 to 09/30/00
Outputs
Breeding studies are continuing with Aglaonema, Anthurium, Dieffenbachia and Spathiphyllum. Our hybrid Aglaonema `Silver Bay' is one of the top cultivars in Florida; grower demand cannot be met. Anthurium 'Red Hot'is one of the top cultivars in Florida also. There are 2 Anthurim, 2 Aglaonema and 2 Dieffenbachia hybrids that are near the end of trialing in Florida and will be released during 2001. We have shown that it is possible to distinguish different Spathiphyllum and Anthurium cultiars by using RADP technology. This should help us in verifying the genetic diversity in those genera and well as have potential use in plant patent descriptions.
Impacts
New ornamental foliage cultivars can have a dramatic impact in industry. New cultivars are good tools for showing the progressive nature of the industry as well as providing better products for the consumer.
Publications
- Henny, R.J., Norman, D.J. and J. Chen. 2000. Progress in ornamental aroid breeding. VIII International Aroid Conference. Missouri Botanical Garden Press, St. Louis, MO In Press).
- Henny, R.J. and D.J. Norman. 2000. `Golden Bay' Aglaonema. HortScience (In Press).
- Ranamukaarachchi, D.G. and R.J. Henny. 2000 DNA fingerprinting to identify nine anthurium pot plant cultivars and examine their genetic relationship. HortScience (In Press).
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Progress 10/01/98 to 09/30/99
Outputs
Breeding studies continue with Aglaonema, Anthurium, Dieffenbachia and Spathiphyllum. These are all members of the family Araceae and commonly referred to as aroids. The main focus in on disease resistance and chilling resistance. Two cultivars (Aglaonema `Golden Bay' and Anthurium `Showbiz') were approved for release by the IFAS cultivar release committee during 1999. Five other Aglaonema hybrids were distributed to propagators for increase and trial growing. Two Spathiphyllum hybrids, with resistance to Cylindrocladium root and stem rot, were also given to propagators for testing. Gibberellic acid was shown to induce flowering of Syngonium with no affects on pollen production. Growth studies with Anthurium indicated that most cultivars prefer nutrition rates that are much lower that those for other aroids.
Impacts
Ornamental aroids are the major component of Florida's ornamental foliage plant industry. New cultivars are important to maintain our competitive advantage. Information generated in this program, including both breeding techniques and cultivars, helps nurserymen as well as private breeders enhance the industry.
Publications
- Henny, R.J., Norman, D.J, and M.E. Kane. 1999. Gibberellic acid-induced flowering of Syngonium podophyllum Schott `White Butterfly'. HortScience 34(4):676-677.
- Henny, R.J. 1999. `Red Hot' Anthurium. HortScience 34(1):153-154.
- Norman, D.J., R.J. Henny and M.F.J. Yuen. 1999. Resistance in twenty-two cultivars of Spathiphyllum to Clindrocladium root rot. HortTechnology 9(1):68-69.
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