• Korean Journal of Plant Tissue Culture
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• v.25 no.2
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• pp.103-107
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• 1998

Tobacco proembryos were irradiated with 100 Gy of heavy-ion beams($^{14}\textrm{N}$, $^{20}\textrm{Ne}$: 135 Mev/u) after 24 to 96 hours of pollination as a mutagen and screened $\textrm{M}_{1}$ generation for morphological mutants and salt-tolerant plants. Morphological and physiological characteristics of the salt-tolerant plants derived from the irradiated proembryo are discussed in this report. Mutants irradiated proembryos with the beams after pollination produced various kinds of morphological variation. A total of 17 salt-tolerant plants were selected from tobacco cultivar (BY-4) by treatment with $^{14}\textrm{N}$ beam. Shapes of filament and pollen grain of most salt-tolerant plants were abnormal compared with non-irradiated wild type, and seeds weight and fertility obviously decreased. The germination rates of the several $\textrm{M}_{2}$ lines on the saline and the mannitol condition were higher than that of wild type.

• Horticultural Science & Technology
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• v.34 no.1
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• pp.163-171
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• 2016

We investigated the intensity and pattern of the scent produced by diploid and tetraploid Cymbidium flowers, using an electronic nose with 6 metal oxide sensors (MOS). The MOS responses were evaluated by principal component analysis, discriminant function analysis, and sensor data. These analyses revealed that tetraploid flowers had a stronger scent than diploid flowers in Cymbidium Golden Elf 'Sundust'. Furthermore, among the different flower parts-column, lip, and petals-the column produced the strongest scent. There was no significant difference between the flowering periods of diploid and tetraploid potted Cymbidium Golden Elf 'Sundust' and Cymbidium Elma 'Orient Toyo' grown in a greenhouse. Moreover, there were no significant differences between the number of flowers per flower stem and the length of flower stems on the diploid and tetraploid plants of these two Cymbidium cultivars. This study provides potentially useful information for the breeding of polyploidy Cymbidium in the floriculture industry.

• Korean Journal of Breeding Science
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• v.41 no.3
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• pp.346-348
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• 2009

A golden double freesia (Freesia hybrida Hort.) "Golden Amor" was developed from a cross 'Golden Crown' and 'White Wing' followed by seedling and line selections at the National Horticultural Research Institute, Rural Development Administration (RDA) in 2005. Growth and flowering characteristic tests were conducted from 2000 to 2005. "Golden Amor" has large double type flower with bright golden color (RHS 12B). It have multiple florets, good flower shape, upright leaves and stalks. The average yield of "Golden Amor" was 6.0 cuttings per plant in greenhouse carried out from 2003 to 2005. It has good production of cormlets, vigorous growth and resistance to Fusarium and virus. "Golden Amor" would be cultured under greenhouse condition in Korea.

• Korean Journal of Breeding Science
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• v.41 no.1
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• pp.40-43
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• 2009

A new standard rose cultivar "Peach Pudding" was bred from the cross between deep red standard cultivar 'Red Sandra' and light pink standard cultivar 'Dolores' at the National Horticulture Research Institute. The cross was made in 2000 and "Peach Pudding" was finally selected in 2006 after investigating characteristics for three years from 2002 to 2006. 'Peach Pudding', a pink standard cultivar has good flower shape and fashionable flower color. The major characteristics of this cultivar are 113.1 stems/$m^2$/year in yield, 60.6 cm in length of cut flower, 8.7 cm in flower diameter, 38.6 in petal number, and 12.8 days in vase life. This cultivar can be propagated by both cutting and grafting. The consumer's preference of this cultivar is relatively higher than that of control cultivar, 'New Miracle'.

• FLOWER RESEARCH JOURNAL
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• v.17 no.3
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• pp.190-193
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• 2009

A new standard rose cultivar 'Happy Day' was bred from the cross between pink standard cultivar 'Vivaldi' and pink standard cultivar 'Medeo' at the National Institute of Horticulture & Herbal Science. The first cross was in 2003 and 'Happy Day' was finally selected in 2008 after investigating characteristics for three years from 2006 to 2008. 'Happy Day', a pink standard cultivar grows vigorously and has powder mildew resistance. The major characteristics of this cultivar are $160stems\;m^{-2}$ per year in yield, 79.2 cm in length of cut flower, 9.9 cm in flower diameter, 28.8 in mean petal number, and 11.8 days in vase life. This cultivar can be propagated by both cutting and grafting. The consumers' preference of this cultivar is relatively higher than that of control cultivar, 'Nobleless'.

• FLOWER RESEARCH JOURNAL
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• v.17 no.2
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• pp.137-140
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• 2009

A new spary chrysanthemum(Dendranthema grandiflorum) cultivar 'Noble Wine' was developed from a cross between 'SL03-01' and 'Artist Pink' by selection of seedlings and lines at the Flower Research Institute, Gyeongnam Agricultural Research and Extention Services(ARES) from 2003 to 2007. Its characteristics were investigated three times from 2005 to 2007 under condition of forcing culture in spring and retarding culture in autumn. The natural flowering time of 'Noble Wine' was October 26th, and yearround production was possible by day length treatment. Its capitulum was 5.4 cm in diameter, and had 21.6 ray florets and 28.5 head per stem in autumn. Its ray floret was red-purple with green central zone. 'Noble Wine' was about 45 days in spring, and 'Noble Wine' showed the vase life of 21.3 days in autumn. This cultivar was registered for a commercialization in 2007.

• FLOWER RESEARCH JOURNAL
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• v.16 no.4
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• pp.317-320
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• 2008

A new spray chrysanthemum(Dendranthema grandiflorum Ramat.) cultivar 'Yes Line' was originated from a cross between 'T22319' and 'SP02-037-13'. This cultivar was tested on the characteristics from 2004 to 2007 for the evaluation and selection including shading and retarding culture. The natural flowering time of 'Yes Line' is late October, but year-round production is possible by shading, lighting and retarding culture. This cultivar was single in flower type, with a color of red-purple(RHS 74C), with the flowers of 21.4 per stem. 'Yes Line' showed the vase life of 16.5 days in autumn season. The diameters of flower and flower center were 4.3 cm, 1.2 cm respectively. The days to flower under the short day treatment was 7.5 weeks and preference of consumers were high at 3.86 ranged up to 5.00. It has resistance to white rust and was possible to cultivate all-year-round.

• FLOWER RESEARCH JOURNAL
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• v.18 no.3
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• pp.211-215
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• 2010

A new spray chrysanthemum(Dendranthema grandiflorum) cultivar 'Magic' was developed from a cross combination between 'Artist Pink' and 'SP0347' by selection of seedlings and lines at the Flower Research Institute, Gyeongnam Agricultural Research and Extension Services(ARES) from 2003 to 2007. Its characteristics were investigated three times from 2005 to 2007 under condition of forcing culture in spring and retarding culture in autumn. The natural flowering time of 'Magic' was October 26th, and year-round production was possible by day length treatment. Its capitulum was 6.1 cm in diameter, and had 31.9 ray florets and 11.7 head per stem in autumn. Its ray floret was white-purple with yellow green central zone. Days to flower of 'Magic' was about 43 days in spring, and 'Magic' showed the vase life of 20.6 days in autumn. This cultivar was registered for a commercialization in 2007.

• FLOWER RESEARCH JOURNAL
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• v.17 no.4
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• pp.332-335
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• 2009

A new cultivar of Rosa hybrida 'Loving Heart' was developed by crossing Gyeongkyo R-6 and 'Noblesse' at Gumi Floricultural Experiment Station in 2002. Characteristics trials were conducted three times from 2004 to 2007. This cultivar showed dark pink flower color (RHS, Red-purple group 66-B) and standard type with good flower shape. The flower diameter is 10.3cm and the number of petals per flower is 55. Vase life of 'Loving Heart' could be as long as 12.3days. The yield of 'Loving Heart' was $127stems/m^2/year$. 'Loving Heart' has good quality of cut flower and strong vigor in plant growth. This cultivar has straight stems and is easy to culture because of a few prickles on the top of stem. This cultivar is appropriate for both soil and solution(hydroponics) cultures.

• FLOWER RESEARCH JOURNAL
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• v.19 no.3
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• pp.177-180
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• 2011

A cultivar 'Yellow Cream' of Phalaenopsis(P. Blume) was developed by cross breeding and line selection at the Flower Research Institute, Gyeongnam ARES, from 2000 to 2008. Characteristic trials for this cultivar were carried out three times from 2006 to 2008. 'Yellow Cream' was developed from a crossing between P. 'Sogo Firework' and P. 'Sogo Gold'. 'Yellow Cream' exhibits light yellow flower color with pink stripe and favorable flower shape. Individual flowers are formed with parallel arrangement and have long life with more than 55 days. 'Yellow Cream'(Grant No.3232) was registered to the Korea seed and variety Service(KSVS) for commercialization in 2010 and suitable for the cultivation under greenhouse conditions in Korea.