• Proceedings of the Korean Society of Plant Biotechnology Conference
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• 2003.04a
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• pp.39-48
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• 2003

The ornamental industry encompasses cut flower, pot plant, turfgrass and nursery stock production and is an important part of the agricultural sector. As internationally traded commodities, cut flowers and plants are an integral part of the economy of a number of developing countries in South America, the Caribbean and Africa. Genetic modification (GM) is a tool with great potential to the ornamental horticulture industry. The rapid progress in our knowledge of plant molecular biology can accelerate the breeding ornamental plants using recombinant DNA technology techniques. Not only is there the possibility of creating new, novel products the driver of the industry but also the potential to develop varieties requiring less chemical and energy inputs. As an important non-food agricultural sector the use of genetically modified (GM) ornamental crops may also be ideal for the intensive farming necessary to generate pharmaceuticals and other useful products in GM plants. To date, there are only a few ornamental GM products in development and only one, a carnation genetically modified for flower colour, in the marketplace. International Flower Developments, a joint venture between Florigene Ltd. in Australia and Suntory Ltd.of Japan, developed the GM carnations. These flowers are currently on sale in USA, Japan and Australia. The research, development and commercialisation of these products are summarised. The long term prospects for ornamental GM products, like food crops, will be determined by the regulatory environment, and the acceptance of GM products in the marketplace. These critical factors will be analysed in the context of the current legislative environment, and likely public and industry opinion towards ornamental genetically modified organisms (GMO's).

• Journal of the Korean Society of Tobacco Science
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• v.3 no.1
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• pp.49-57
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• 1981

To obtain genetic information for breeding aromatic tobacco, broad sense heritabilities, phenotypic, and genotypic correlations were obtained for the following characters : days to frowert, plant height, number of leaves, leaf shape and nicotine. Six pure line varieties and the first and second generations of 5 crosses among them were employed in this study. The heritabilities for number of leaves and nicotine were very high in pure line varieties. However, the heritabilities for days to flower and yield were low in six varieties as well as in F2. Genotypic correlations had higher values than phenotypic did. Heritabilities calculated from segregating generations were lower than those from pure varieties, regardless of crosses involved. Positive phenotypic correlations between yield and plant height were observed in all crosses. Same phenomenon was observed with correlations between days to flower and number of leaves. The genotypic and phenotypic variances and covariances entering into the computation of correlations were used to construct the seletion indices for yield. The use and limitation of selection index was also discussed.

• Proceedings of the Plant Resources Society of Korea Conference
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• 2018.10a
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• pp.46-46
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• 2018

The Platycodon grandiflorum (balloon flower) has been used as food material and traditional medicine in Asia. The roots have been used in traditional medicine to treat coughs, upper respiratory infections, and sore throats. Using 1,603 valid patents from 6 countries, we analyzed the patent trend based on year, countries, applicants, and technology. The technologies are categorized into 6 groups which include material, additives, manufacture, cultivation, breeding and seed. The technology competitiveness of countries were analyzed with quantitative factors such as cites per patent, patent impact index, patent family size and technology strength. In comparison with other countries in the patent index, South Korea shows an increasing trend in patent numbers and total leverage ability, although the individual technology is lower than Japan and USA. Our study provides information on technical trend to support the performance of new projects on balloon flower.

• Journal of the Korean Society of Tobacco Science
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• v.11 no.2
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• pp.135-141
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• 1989

The experiment was conducted to obtain basic information on breeding of flue-cured tobacco varieties. Nine cultivars and partial diallel set of 36 F1 hybrides were grown at Taegu Experiment Station, Korea Ginseng & Tobacco Research Institute in 1983. Estimated heritability in the narrow-sense ranged from 66.21% to 94.12% for yield, leaves per plant, days to flower, leaf weight, leaf width, leaf shape, nicotine content and reducing sugar content, while that for stalk height, leaf length, midrib weight and midrib width ranged from 28.12% to 56.25%. The genotypic correlations were positive among yield, leaf weight, leaf length, leaf width, midrib weight and midrib width in the middle leaves, days to flower, nicotine content and reducing correlated with leaf length than leaf width. At the path coefficient analysis of the effect of leaf and midrib characters upon yield according to stalk position, leaf weight, leaf width and midrib width in the middle leaves, and leaf weight, and leaf width in the top leaves showed high direct effects.

• Journal of the Korean Society of Tobacco Science
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• v.6 no.1
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• pp.3-11
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• 1984

In order to obtain the basic information for the successful breeding of aromatic tobacco (Nicotiana tabacum L.), the heterosis, combining ability and gene distributions in 28 Fl hybrids by diallel crosses between Korea local and Oriental varieties were investigated. The yield were higher, stalk height, leaf length and leaf width were larger and days to flower was shorter for the Fl hybrids when compared to mid-parent. Estimates of general combining ability were significant for all characters investigated, and specific combining ability were significant for yield, stalk height, leaves Per Plant, leaf width and days to flower. In vr-wr graph, partial dominane was exhibited by all characters investigated.

• FLOWER RESEARCH JOURNAL
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• v.17 no.3
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• pp.152-157
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• 2009

To obtain pure lines for breeding $F_1$ varieties of Primula malacoides, 10 lines that were considered uniform in growth and flowering characteristics were selected from self-crossings of the sixth generation ($S_6$). Plant height of the selected lines ranged from 20.8 to 33.2 cm, and number of leaves ranged from 33.6 to 54.2. The selected lines flowered at 181.4 to 207.8 days after sowing. Three lines, including 'PR-03-81', flowered in less than 190 days from sowing, while six lines, including 'PR-03-228', only flowered after more than 200 days from sowing. In terms of petal color, six lines, including 'PR-03-81', were pink, three, including 'PR-03-236', were purple, and line 'PR-03-275' was white. Flower diameter ranged from 2.4 to 2.9 cm, and number of pedicels per plant was between 15.4 and 26.4. Number of flowers per pedicel ranged from 20.2 to 30.2. Germination was more than 70%, and number of seeds per capsule (pod) ranged from 110.0 to 162.8. In summary, plant height was low and flower diameter was small and plants had many flowers and readily formed seeds. The selected lines are not only valuable as ornamental plants but could also be used as breeding materials for $F_1$ hybrids of Primula polyantha.

• Korean Journal of Breeding Science
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• v.43 no.6
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• pp.509-512
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• 2011

A FA intersectional hybrid lily cultivar 'Golden Center' was developed in 2008 at National Institute of Horticultural and Herbal Science (NIHHS), Rural Development Administration (RDA) Korea. The cross was conducted between female parent Lilium FA hybrid 'Migreen (FA97-30)' and male parent L. Asiatic hybrid 'Sanzio' by a cut style pollination method (CSM) and immature embryo rescure at Suwon in 1999. The first selection was done and the line name was tentatively given as 'FA04-24' in 2004. After in vitro multiplication, bulb-producing ability, line, growth and flowering characteristic of 'FA04-24' were evaluated from 2005 to 2007. The evaluation of characteristics and consumer preferences were surveyed at a lily flower show of NIHHS in 2008. 'Golden Center' flowers in the middle of June and grows up to 144 cm high in length. Flower blooms facing upward, with light yellow petals (RHS, GW157C). The pollen of 'Golden Center' is sterile. Year-round flowering can be done by storing the bulb under $-1.5^{\circ}C$ conditions. It is needed to control Botrytis disease in wet season.

• Journal of the Korean Society of Tobacco Science
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• v.22 no.1
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• pp.39-44
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• 2000

This study was carried out to obtain the basic information about the sucker producing characteristics of certain burley tobacco varieties(Nicotiana tabacum L. var. burley) at Suwon and Chonju Experiment Station, Korea Ginseng & Tobacco Research Institute in 1999. The number and weight of suckers for 12 varieties or breeding lines were investigated three times, 45 days after transplanting for ground sucker, 10 days after topping, and 10 days after maleic hydrazide(MH) applying for upstalk sucker. KB 103 and KB 9416-1 produced less ground suckers and upstalk suckers than other entries did. KB 9210-8 produced less ground suckers and (Male sterile TC 612 x KB 108)F$_1$ also produced less upstalk suckers than other entries did. There was no differences among entries in sucker production at 10 days after MH treatment. Between the weight of total sucker and days to flower revealed the negative correlation, but not significant. The low sucker producing entries described above could be used as a parental line in the breeding program for the low sucker producing variety.

• International Journal of Industrial Entomology and Biomaterials
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• v.46 no.2
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• pp.55-59
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• 2023

One of the necessary conditions for the mass production of the edible insect, the white-spotted flower chafer Protaetia brevitarsis seulensis (Kolbe), is to breed a strain with excellent egg-laying ability. To identify external morphological traits related to egg-laying ability, we investigated the effects of the weight, length, and width of female adults on egg production. Correlation and multiple regression analyses revealed a positive correlation between the weight of female adults and egg production. This study suggests that selection of heavier females is a good strategy for breeding strains with superior egg-laying characteristics. The results of this study will serve as important foundational data for future breeding of superior strains.

• Horticultural Science & Technology
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• v.17 no.4
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• pp.481-484
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• 1999

This experiment was conducted to examine the effects of chitosan and sucrose on the vase life of cut rose (Rosa hybrida L. cv. Cardinal). Addition of 5 mg/L chitosan and 3% sucrose to the holding solution prolonged the vase life for 3 days as compared to the control, and improved quality of cut rose in flower diameter and fresh weight. Development of bent-neck was delayed by supply of 2 mg/L or 5 mg/L chitosan and 3% sucrose about 2 or 3 days. When 3% sucrose was added to the holding solution, the rate of water absorption more slowly decreased compared to the other treatments.