Xlll International Symposium
on Flower Bulbs and Herbaceous Perennials

May 1 - 3, 2019
Grand Ambassador, Seoul, Korea

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Plenary Lectures

Name Topic
Gary A. Chastagner (USA) Integrated management of diseases and pests on ornamental geophytes: Challenges and progress
Johan Van Huylenbroeck (Belgium) Breeding for compact growing ornamentals
Naonobu Noda (Japan) Breeding of blue flowers by genetic engineering

Keynote Speakers

Name Topic
Oh Geun Kwon (Korea) Flower Bulbs and Herbaceous Perennials breeding and research in Korea
Sang Yong Kim (Korea) The project 'Commercialization of Native Wild Flowers' in Useful Plant Resources Center of Korea National Arboretum
Margherita Beruto (Italy) Ranunculus asiaticus: from research to production
Chad T. Miller (USA) Root zone temperature effects on potted Dahlia production
Rina Kamenetsky Goldstein (Israel) Geophyte cultivation in changing climate: how temperature regulates flowering, bulbing and propagation
William B. Miller (USA) Tulips, Fusarium and ethylene: Changing the paradigm
Keith A. Funnell (New Zealand) Germplasm diversification - a Kiwi perspective on tools and strategies
Neil O. Anderson (USA) Selection tools for reducing generation time of geophytic herbaceous perennials
Naomi Okubo (Japan) Diversity of floral scent of Tulips
Fangyun Cheng (China) Studies and advances on the breeding of inter-sectional hybrids of peony in China

Plenary Lecture 1 (Day 1, 14:00-14:40)

  • Dr. Gary A. Chastagner
    Washington State University, USA
  • Integrated management of diseases and pests on ornamental geophytes: Challenges and progress
The development and implementation of cost effective, sustainable production practices that rely on an integrated approach to managing diseases and pests is critical to the long term production of high quality ornamental geophytes. Increasing restrictions on the use of pesticides, the loss of widely used products, and problems associated with the development of resistance to pesticides have resulted in an urgent need to develop environmentally acceptable management strategies. During this presentation, a historical perspective and overview of recent advances in the integrated management of disease and pest on geophytes will be given.

Plenary Lecture 2 (Day 3, 09:00-09:40)

  • Dr. Johan Van Huylenbroeck
    Flanders Research Institute for Agriculture, Fisheries and Food, Belgium
  • Breeding for compact growing ornamentals
Compact growth is a very important trait in the production of numerous ornamental plants. In practice this is mainly achieved by regular application of various chemical growth inhibitors. Via cross breeding and subsequent selection natural compact growing plants can be obtained. Mutation breeding, chromosome doubling and introduction of rol genes from Rhizobium rhizogenes in plants are interesting alternative breeding approaches. Here we will focus on the application and possibilities of the latter two strategies to develop natural compact growing ornamentals.

Plenary Lecture 3 (Day 3, 11:00-11:40)

  • Dr. Naonobu Noda
    National Agriculture and Food Research Organization, Japan
  • Breeding of blue flowers by genetic engineering
The breeding of blue flower in major ornamental plants, such as chrysanthemum and rose, is quite difficult with conventional breeding methods because there are no closely-related species with blue flower. We have succeeded in generation of blue chrysanthemums through genetic engineering. The commercialization of blue chrysanthemums may facilitate the expansion of flower color variation, increase the potential flower value and open new possibilities and applications in chrysanthemums. Our research results from molecular breeding of the blue chrysanthemums and outline of future perspectives in blue flower breeding will be presented.

Keynote Speaker 1 (Day 1, 09:40-10:10)

  • Dr. Oh Geun Kwon
    National Institute of Horticultural & Herbal Science, Korea
  • Flower Bulbs and Herbaceous Perennials breeding and research in Korea
Flower bulbs and herbaceous perennials as cut flowers, pot, and garden plant are one of the most important ornamental plants in South Korea. Flower bulbs which are mainly cultivated are lilies, freesias, gladioluses, calla lilies, alstromerias, and herbaceous perennials such as chrysanthemums, gerberas, carnations and Gypsophila paniculata. The total flower cultivation area in Korea is 4,936 ha and the annual production value is US$ 490 million in 2017. Cut flower production value is US$ 160 million, 32.4% of the flower production. The annual production value of flower bulbs is 14.2% and the annual production value of herbaceous perennials is 43.9% of the cut flower production. Until the early 2000s, most of the seeds, nursery, and bulbs of the crops were imported from the Netherlands, New Zealand and China, and etc. However, the penetration rate of domestic varieties and seedlings has increased to more than 20%. In order to achieve this goal, the National Institute of Horticultural and Herbal Science (NIHHS) has been developed in cooperation with universities, and private breeders, and local research institutes. Development of adaptable cultivars mainly in Korea, development of varieties with various colors and fragrance, development of interspecific hybrid varieties, development of drainage varieties, and development of domestic varieties cultivation manuals have been conducted. Recently, we have been actively using the methods to identify useful genes using NGS technology for breeding and are conducting research on smart greenhouse management for advanced cultivation technology.

Keynote Speaker 2 (Day 1, 10:10-10:40)

  • Dr. Sang Yong Kim
    Korea National Arboretum, Korea
  • The project 'Commercialization of Native Wild Flowers' in Useful Plant Resources Center of Korea National
In Korea, native plant sales have increased steadily last five years. However, native plants are still under-used mostly because of a market scale and the lack of information of native plants (in particular wild flowers). Korea National Arboretum has recently started the project 'Native Wild Flowers' for the commercialization of wild flowers native to Korea. In this project, we have selected 30 herbaceous such as Euphorbia jolkinii, Minuartia laricina, Veronica kiusiana var. diamantiaca, V. pusanensis and 6 woody species as new ornamental target crops. Most of the species have not been cultivated for commercial purposes before. The project consists of several contents : 1) floral market survey, 2) propagation and cultivation physiology including flowering control, 3) ornamental plants breeding, and etc. with the potential plants.

Keynote Speaker 3 (Day 1, 11:00-11:30)

  • Dr. Margherita Beruto
    Regional Institute for Floriculture, Italy
  • Ranunculus asiaticus: from research to production
A reliable propagation system has been proved to enhance the breeding programs of geophytes and to accelerate the availability of selected and healthy genotypes. Tissue culture is therefore an attractive option to enhance the impact of new geophytes. In this talk, the appropriate micropropagation protocol which allowed to bring clones onto market for Ranunculus asiaticus, an ornamental geophyte showing an increasing interest as cut flower and pot plant production, is described. Details about the propagation scheme and the strategies which should be adopted in the nursery to ensure healthy plant material are pointed out. Moreover the most important challenges to be faced during the cultivation and the phytopathological management will be discussed with reference to the research work which is carried out at our institution. The economic importance of micropropagation and the perspectives for a further development of this crop will be outlined.

Keynote Speaker 4 (Day 1, 11:30-12:00)

  • Dr. Chad Miller
    Kansas State University, USA
  • Root zone temperature effects on potted Dahlia production
Dahlias (Dahlia xhybrida) have been a popular greenhouse crop in recent years, as increased dahlia breeding and selection has led to a new generation of dahlias, with enhanced disease resistance, leading the way for a renewed interest in the horticulture market. The main objective of this research was to evaluate and characterize elevated root zone temperature effects on vegetative dahlia production on different dahlia lines and cultivars. Our results showed that temperature affects were cultivar dependent and the results will be discussed.

Keynote Speaker 5 (Day 1, 12:00-12:30)

  • Dr. Rina Kamenetsky Goldstein
    Institute of Plant Sciences, ARO, Israel
  • Geophyte cultivation in changing climate: environmental effects on flowering, bulbing and propagation
Temperature and light play major role in geophyte annual development. Knowledge on plant-environment interactions allows us ¡°programming¡± geophyte production for the best market time and quality. In addition, the identification and introduction of genes, which control and regulate flower development, storage organ formation and dormancy in vivo and in vitro, await further progress and will provide new tools for successful production of the ornamental geophytes.

Keynote Speaker 6 (Day 1, 14:40-15:10)

  • Dr. William B. Miller
    Cornell University, USA
  • Tulips, Fusarium and ethylene: Changing the paradigm
Fusarium can cause significant losses to tulip crops and is an interesting disease do the fact the fungus produced ethylene when growing on tulip bulbs. In this work, Miller describes ongoing experiments to determine ethylene sensitivity of numerous tulip cultivars and also variation in ethylene production when tulip bulbs are infected with Fusarium. The results indicate significant variation in ethylene sensitivity (ca. 20% of cultivars are insensitive) and about half of the cultivars tested to date support low levels of ethylene production upon inoculation.

Keynote Speaker 7 (Day 3, 09:40-10:10)

  • Dr. Keith Funnell
    The New Zealand Institute for Plant & Food Research Limited, New Zealand
  • Germplasm diversification - a Kiwi perspective on tools and strategies
The international ornamentals industry already benefits from recently developed ornamental plants from New Zealand (NZ) such as begonia ¡®Bonfire¡¯, limonium Sinzii¢â, and the gentian Showtime¢â series. Our experience illustrates that sustaining delivery of new ornamental cultivars with commercial appeal requires strategies of diversification of people and plants. Our NZ-based experiences providing examples of the application of hybridisation, ploidy manipulation, and mutagenesis will be presented.

Keynote Speaker 8 (Day 3, 10:10-10:40)

  • Dr. Neil Anderson
    University of Minnesota, USA
  • Selection tools for reducing generation time of geophytic herbaceous perennials
A restrictive challenge to breeding and domestication of geophtyes and herbaceous perennials (both new and existing crops) is the long generation time, often ranging from 3-5+ years from seed to flowering. These long juvenility periods limit progress in selection and/or incorporation of traits from wild species. However, juvenility periods can be significantly reduced with selection tools starting in the plug phase, following seed germination. Several selection tools of rapid generation cycling that have been employed in Lilium, Gladiolus, Iris, and Chrysanthemum will be presented. Using these tools, for example in Gladiolus, the generation time of five years was reduced to <2 months (seed to flower).

Keynote Speaker 9 (Day 3, 11:40-12:10)

  • Dr. Naomi Okubo
    National Agriculture and Food Research Organization, Japan
  • Diversity of floral scent of Tulips
Tulips have a variety of floral scents. Although the charm of tulip is a variety of colors and shapes, there are a few fragrant cultivars. When you smell the tulip scent well, you can feel various scents such as citrus-like, honey-like, green-like. The horticultural research institute in Toyama prefecture in Japan maintains over 2000 species of tulip genetic resources. In this study, we smelled the fragrance of the flowers of these genetic resources and analyzed the floral scent components of the cultivars which felt aroma. Here we discuss the diversity of the scent of these tulips.

Keynote Speaker 10 (Day 3, 12:10-12:40)

  • Dr. Fangyun Cheng
    Beijing Forestry University, China
  • Studies and advances on the breeding of inter-sectional hybrids of peony in China
In decades past, inter-sectional hybrids in Paeonia have found their uses in increasing peony industry across the world while inter-sectional crossing becomes the most effective pathway to improve peony cultivars. Since 2000, we have started a breeding project based on inter-sectional crosses. Here, the recent advances on it will be summarized: 1) the wide crosses among various peony species/cultivars, including P. rockii, P. ostii, P. quii, P. sufruticosa, P. lemoinei, P. veitchii and P. lactiflora, were carried out to select ideal combinations between different parents. 2) Advance generation hybrids (AGH) were demonstrated to be promising in crossings with different P. lactiflora cultivars. Some excellent parent-combinations between them can effectively produce the hybrid seeds in annual crossings. 3) Combined with morphological observation, SSR molecular markers were employed to identify early the hybrids and meanwhile, the techniques by micropropagation in vitro and by grafting were studied for propagating intersectional peony hybrids.
Ki-Byung Lim
  • Department of Horticultural Science, Kyungpook National University, Korea
Jongyun Kim
  • Division of Biotechnology, Korea University, Korea
  • info@flowerbulb2019.org
Jaap M. van Tuyl
  • Wageningen University and Research, The Netherlands
Yoon-Jung Hwang
  • Department of Life Science, Samyook University, Korea
  • science@flowerbulb2019.org

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