• Journal of Mushroom
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• v.20 no.2
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• pp.50-54
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• 2022

This study was conducted to reduce the phenomenon of the biased cultivation of certain mushroom varieties and to develop a competitive variety of Grifola frondosa. We developed the first Korean white commercial mushroom strain, 'Bakyeon', by crossing monokaryons derived from brown strains. We have collected and tested the characteristics of mushrooms from domestic and international genetic resources since 2018. We bred the unique domestic variety, 'Bakyeon', which has the following characteristics. The optimal temperature for mycelial growth was 25~28℃ and the optimal temperature for fruit body growth was 16~18℃. The new variety was similar to the control variety (Daebak) in terms of the pileus, which formed a pine cone shape, and the number of days of cultivation. The yield was 94.1 g/bottle, which was 23% lower than the 108.5 g/bottle yield of the control variety. When incubating the parent and control varieties, the replacement line was clear. Moreover, polymerase chain reaction analysis of mycelial DNA resulted in different band patterns between the parent and control varieties, confirming the hybrid species.

• Journal of The Korean Society of Grassland and Forage Science
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• v.44 no.2
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• pp.127-132
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• 2024

This experiment was conducted to breed a very early-maturing variety of Italian ryegrass (Lolium multiflorum Lam.) at the Grassland and Forage Crops Division, National Institute of Animal Science, RDA, Cheonan, Korea, from 2022 to 2023. The new variety, named "Earlybird," is a diploid variety characterized by green leaf color, a semi-erect growth habit in late autumn/fall, and an erect growth habit in early spring. With a heading date of April 30, Earlybird is categorized as a very early-maturing variety. Compared to the "Kowinearly" control variety, Earlybird's flag-leaf width is wider by 0.2 mm, its flag-leaf length is longer by 1.4 cm, and its plant height is greater by 10.5 cm. Additionally, Earlybird's ear length is 1.4 cm longer than Kowinearly's, and it exhibits lodging resistance. Although the dry matter yield of Earlybird (7,469 kg/ha) is smaller than that of Kowinearly, the difference is not statistically significant. The total digestible nutrient and crude protein content of Earlybird are 63.5% and 8.6%, respectively, which are higher than those of Kowinearly by 1.8% and 0.3%, respectively. The neutral detergent fiber and acid detergent fiber content of Earlybird are 56.9% and 32.0%, respectively, which are lower than those of Kowinearly by 2.2% and 2.3%, respectively.

• Korean Journal of Plant Resources
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• v.33 no.3
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• pp.220-225
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• 2020

Bowlesia incana Ruiz & Pav., a new invasive alien plant in Korea, was found in Ulju-gun, Ulsan Metropolitan City. This species is characterized as being similar to the genera Hydrocotyle Tourn. ex L. and Centella L. However, it differs morphologically from these two genera in leaves, flowers, and fruits, as well as stellate pubescence growing on the whole plant. In Korea, Bowlesia incana Ruiz & Pav. is recorded for the first time in this study. A morphological description, distribution map, and illustrations based on the Korean materials collected are presented.

• Journal of information and communication convergence engineering
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• v.9 no.1
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• pp.50-54
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• 2011

Recently there are so many media contents created and used by variety routes. Therefore, it is essential to make a new platform which is used for distributing media contents include IPTV. With open IPTV service, developing the new platform became even more important. Because open IPTV makes it possible for consumers to choose contents regardless of contents of the providers. The new platform has to accept current variety service structure. MPEG-21 multimedia framework was developed to satisfy these needs. It presented the distribution framework of the contents but didn't restrict the particular solutions for protecting the rights. In this paper, we present authoring and consuming system for package contents based on MPEG-21 Multimedia Framework for distributing media resources and managing the license of multimedia contents

• Korean Journal of Breeding Science
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• v.41 no.4
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• pp.539-542
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• 2009

A new gerbera variety "Pink Swan" was released by the National Horticultural Research Institute (NHRI) in 2007. A cross was made between "Royal" with orange and single and 'Himalaya' with white and semi-double in 2004. After investigation of the characteristics for 4 years (from 2004 to 2007), it was selected specially for the use of cut-flower. "Pink Swan" is a vigorous medium-sized cultivar with pink (RHS R48D), yellow green center and semi-double. The average flower diameter is 10.6 cm. And inner ray floret and disc diameter is 5.99cm and 1.83cm, respectively. It produces a large yield with continuous supply of flowers and has adequate peduncle height. We believe that "Pink Swan" has a great potential for expanding cultivated area of domestic gerbera cultivar and increasing farmers-income.

• Journal of Practical Agriculture & Fisheries Research
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• v.18 no.1
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• pp.47-61
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• 2016

Ranging from a variety that a consumer to purchase and consume, and a variety with high quality and pest resistance, sustaining biological diversity as well as hiring global experts who understand breeding policy, it tightly maintains relationship with producer, consumer, and exporter to promote superior species for customized export to exporting country. By carrying out researches on cost saving and how to shorten the period of apple to cultivate, it consolidates its stance as a competent apple exporting country of apple and pear with high competetiveness. In order to compete against apple and pear of New Zealand, farmers argue that they need budget and researchers also argue that "No money, no research." Due to certain limit of governmental budget support, it is believed that it is time to fund our own way to promote apple research center. To come up with the best apple production, all of those who associates with apple such as farmers, researchers, government, exporters, and consumer should do their best to enhance the apple and pear industry.

• Korean journal of communication and information
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• v.28
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• pp.77-110
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• 2005

This study's purpose is a search for the conceptual variety of media education. For this purpose, media education's surrounding is used to search by two of view. First view is about the condition of media education that includes an advent of new media, consumer's attitude change to user and variety of educational change. And then the variable paradigm of media education are viewed how it is connected with the theories of media with time. Change of surrounding and theoretical variety tell us why concept of media education should be revised. So, in this study, many scholar's definitions of the media education are regarded. From the rally stage of education for the television, the media education's definition has formed as new field. After that, media education expanded to the media literacy as communication competence with an advent of new media. This means that media education would be variably extend to verbal media education, critical interpretation of the contents and communication with community.

• Journal of Mushroom
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• v.9 no.3
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• pp.101-104
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• 2011

We aimed to develop a new variety of Neolentinus lepideus from about forty strains by bag culture. To this end, "Solhyang" which means pine smell in Korean was selected as a new commercial variety of N. lepideus. N. lepideus have yellow pileus and pine smell, which characteristics make a favorable impression on the far east Asia, Korean and Japanese. The optimum temperatures for mycelial growth and fruit body development ranged $26{\sim}32^{\circ}C$ and $18{\sim}20^{\circ}C$, respectively. The required periods of mycelial incubation and fruit body growth were 30 days and 7 days, respectively. The fresh weight of fruit body was 115g/kg with pine sawdust and corn meal power(9:1, v/v) substrate.

• Korean Journal of Breeding Science
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• v.41 no.4
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• pp.510-514
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• 2009

Cymbidium is one of the largest genus in the orchid family and a number of hybrids have been bred in the world. During mass-propagating the Cymbidium "Dongyang" using the meristem culture technology, a useful leaf mutant was selected from the protocom like bodies. The new Cymbidium variety by in vitro mutangesis from "Dongyang" was named as 'Daegook' in 1998. Compared to Dongyang, "Daegook" mutant has white or yellow stripes along the margin of leaves and flowers. The plant length of "Daegook" was shorter than "Dongyang" and the mean length and width of leaf in "Daegook" was 40 cm and 1.6 cm, respectively. The new variety, "Daegook", is expected to be a popular Cymbidium variety among consumer as a ornamental orchid mutant for pot culture by its fine and unique stripes and growth characters.

• Journal of Sericultural and Entomological Science
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• v.42 no.1
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• pp.24-27
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• 2000

A new silkworm variety 'Yangwonjam'for both of spring and autumn rearing season is F$_1$hybrid between Jam 143, a Japanese race bred from H5R1/P8503 and Jam 144, a Chinese race from M8312/8190. This is the first both parent sex-limited larval marking variety in Korea, and which contributes to eggs production of F$_1$hybrid silkworm with saving labor. Jam 143, Japanese parent of the 'Yangwonjam'showed high GCA in pupation percentage and Jam 144, Chinese parent showed high GCA in pupation percentage and single cocoon weight. In the local adaptability test performed at 8 local areas in spring of 1998, Yangwonjam records 1% higher in pupation percentage and 5%, 4% lower in single cocoon weight, cocoon yield from 10,000 3rd molted larvae respectively than the check variety Kumokjam. Also in the resistance test against unfavorable rearing condition performed in spring of 1997, Yangwonjam records 9%, 14% lower in single cocoon weight, cocoon shell weight respectively than the check variety, but showed 1% higher in pupation percentage than check variety.