• Asian-Australasian Journal of Animal Sciences
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• v.16 no.6
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• pp.837-842
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• 2003

Five varieties of napiergrasses (Pennisetum purpureum) were fractionated botanically into leaf blade, leaf sheath, stem and head. Chemical composition of each of whole napiergrass and their botanical fractions were determined. Correlation, linear and multiple regressions between botanical fractions and nutritive value of varieties of napiergrass were also estimated. All botanical fractions differed due to the effect of variety. Napier Pusha contained the highest proportion of leaf blade and internode, but the lowest proportion of leaf sheath. Napier Hybrid contained the lowest proportion of leaf blade, but highest proportion of node. Consequently, napier Pusha contained the highest (p<0.01) crude protein (CP, 9.0%), but Napier Hybrid had the lowest CP (7.0%). Chemical composition of whole plant differed significantly (p<0.01; except NFE, p>0.05) due to the variety. Not only the whole plant, chemical composition of most botanical fractions of whole plant differed (p<0.05 to 0.01) due to the variety. The intrarelationships between leaf blade and leaf sheath was negative (r=-0.43). Leaf sheath was also negatively correlated to CP, but positively correlated to ash of whole Napier or their botanical fractions. Leaf blade, on the other hand, increases CP but decreases ash content of whole plant or their fractions. These results, therefore, suggest that napiergrass varieties differ widely in terms of botanical fractions and nutritive value, which may have important implications on intake and productivity of animals. Furthermore, napiergrass varieties should be selected for leaf blade only for a better response.

• Journal of Mushroom
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• v.5 no.2
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• pp.65-70
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• 2007

This study was carried out to find out respiration characteristics of new variety of oyster mushroom to the temperature response. In new species of oyster mushroom, the account of respiration was on the increase when the growth temperature with the passage of growth stage was on the rise. The $CO_2$ concentration was accelerated as increasing the growth temperature, whereas the $O_2$ concentration was decreased. The account of respiration of new variety was in the descending order, Hukbaek>Jinmi>Chungpung>Suhan2>Chunchu2. Also, the ventilation exponent at $15^{\circ}C$ was Suhan2 2 ~12%, Chungpung 9~24%, Jinmi 15~37%, Hukbaek 17~39% in proportion to Chunchu2. The experiments related to respiration characteristics of new variety of oyster mushroom were worthy of recommending to new variety cultivator.

• Journal of The Korean Society of Grassland and Forage Science
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• v.14 no.3
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• pp.215-222
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• 1994

This experiment was conducted to find out the response of orchardgrass (Dactylis glorneruta L.) varieties to grazing at the condition of monocultures and mixed pastures on the field of Livestock Experiment Station at Suwon from Sep. 1989 to Oct. 1991. The varieties of orchardgrass used in this experiment were Potomac, Hallmark and Syn. No. 2 as a early maturing type, and Lidacta, Rancho and Syn. No. 10 as a late maturing type. The results obtained were as follows: 1. Herbage utilization of mixture with Hallmark variety(T2) was the highest as 78.2% and that with Rancho variety(T5) was the lowest as 70.2%. but there was no difference(P>0.05). Mixtures with early maturing varieties(T1, T2 and T3) were higher as 77.4% than those with late varieties(T4, T5 and T6) as 72.9% in herbage utilization. In monocultures Rancho variety(T5) was the highest as 68.6% and Lidacta variety(T4) was the lowest as 58.8%, and mixtures with early maturing varieties(T1, T2 and T3) as 66.6% were higher than those of late(T1, 72 and 73) as 64.6%. 2. The content of crude protein of 6 mixed pastures ranged from 19.7% to 22.8%, and those of ether extracts, crude fiber, crude ash and nitrogen free extract were 6.6 to 7.5%, 24.9 to 26.2'76, 1 1.5 to 1 1.9% and 33.6-35.4 8, respectively, But there were not different significantly(P>0.05). In monocultures, significant difference by variety was observed in crude protein content(P<0.05). 3. In botanical composition, there was just a little different among 6 mixtures, having 90% or more in grass percentage. The percentages of each orchardgrass varieties were decreased, but those of perennial ryegrasses were increased as grazing sesson was progressed in all treatment.

• Korean Journal of Medicinal Crop Science
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• v.11 no.2
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• pp.167-170
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• 2003

'Jinsun', a new variety of safflower(Carthamus tinctoris L.), was developed by Kyonggi-do Agricultural Research and Extension Services in 2000. It was bred with pure line selection from Namwon local variety population. Jinsun is relatively resistant to Gleosporium carthami and has more flower head and higher ripened grain ratio. Its flowering date was June 22 in Hwaseong, Gyeonggido and contains more protein and linoleic acid relatively in grain compared with Cheongsu, check variety. Grain yield of Jinsun was 11% higher than Cheongsu.

• Proceedings of the Korean Society of Crop Science Conference
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• 1999.11a
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• pp.80-101
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• 1999

Self-sufficiency ratio of food crops in Korea is estimated under $20{\%}$ in 2010 because total food consumption including feed will be increased. but food grain production will be decreased. It is necessary to maintain the optimum level of food self-sufficiency rate to secure national food demand/supply balance and non-trade and multiple function of agriculture in Korea. It will be possible to produce more food grains having the acceptable quality if the appropriate policy and cropping techniques are developed and practised in future. Breeding for high yielding varieties should be the first target to raise the production potential of food crops . Number of varieties developed during last 30 years is counted as 353 in food crops. New varieties developed in 1990s showed the higher yield potential and the improved agronomic characteristics compared with 1970s and 1980s varieties. But number of varieties planted on the farmer's field over $5{\%}$ of national planting area is less than one third of total varieties developed Breeding efforts to maintain planting area of main food crops should be focussed on consumer's demand and farmer's need. They are the best quality variety in each field of crop utilization, the newly designed variety adapting to changes of natural, rural and cropping environment, and the higher yielding variety. It is also needed to develop new quality crop varieties for inducing more consumption of crop grain produced in Korea for direct food or processing. Development of barley varieties for animal feed. high income soybean varieties, high quality wheat variety. and super yielding rice and barley varieties are also needed to keep or maximize national food production potential. In order to establish the appropriate cropping technique for domestic food security, the strong and continuous interest and financial support on crop breeding are required, and the inter-disciplinary and inter-institutionary researches should be strengthened for successful crop breeding.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.27 no.1
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• pp.35-40
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• 1982

New malting barley variety" Doosan #8" is a short culm, lodging registance, high tillering, good quality and high yielding variety. This variety was developed from the cross 'Tai Chung 2 rowed barley #1 \times Deba abed' made in 1972 at Sacheon Malting Barley Experiment station, Doo San Fann's Co. This variety was determined to recommend to the all malting barley production areas in southern part of Korea from 1981. of Korea from 1981.

• The Journal of the Korea Contents Association
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• v.11 no.5
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• pp.328-337
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• 2011

For certify job characteristic affecting attitude of employee, this study is to examine the relationship between core job characteristics(skill variety, task identity, task significance, autonomy, feedback) and attitude(job satisfaction, organizational commitment, turnover intention) of small business from a 'human resource management' point of view. Concretely, it is confirmed whether how influence of ore job characteristics on attitude and whether there is a moderating effect of growth needs of strength between core job characteristics and attitude of small business. The results of regression analysis using 315 domestic employees are as followings. First, it is confirmed that the skill variety and task significance has influence on job satisfaction positively, skill variety and feedback has influence on organizational commitment positively, and skill variety and feedback has influence on turnover intention negatively. Second, there is moderating effect only the relationship between task significance and turnover intention. On the basis of these study results, it suggested strategic implications to job design and business strategy for heightening attitude of small business employees.

• Journal of the Korean Institute of Landscape Architecture
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• v.32 no.2
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• pp.120-129
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• 2004

This study was carried out to develop new varieties with early maturing and large fruit size in the Korean native dogwood (Cornus kousa) for woody landscape plants from native sites or cultivated area. The results are obtained as follows; We selected strains with early maturing and large fruit. size from the habitats from 2000 to 2003. ‘SKK 2-1’ had 4.0cm of fruit size while 2.0 cm of native variety. In addition, ‘SKK 2-2’, ‘SKK 2-3’, ‘SKK 2-4’, and ‘SKK 2-5’ with large fruit and early maturing were preliminary selected from the habitats. In the preliminary selections, ‘SKK 2-1’ was finally selected as new early maturing variety with large fruits in 2003. New early maturing variety with large fruit size, C. kousa var. ‘SKK 2-1’ was selected from 200 plants of 5-year-old seedlings in C. kousa in 5-12 Nung wean ri Goo sung myun Yong In, Kyung gi do, Korea in 2000. Their fruits were colorized in September 18, 20∼25 days earlier than October 7 of native varieties. Its fruit diameter is larger than 4cm. Its fruit weight was 5 times as heavy as native cultivars grown in Korea. This useful characters were still inherited after grafting. However, characteristics of growth, leaf, flower, and flowering period were not different from those of native varieties. Therefore, it was very promising landscape woody plant, having large fruits in early fall season. The rooting rate of Korean dogwood was high by the IBA treatment. The optimum date for softwood cutting was on June 25 ∼ July 25 when the rooting rate was more than 80%. In addition. Korean dogwood was easily propagated by grafting. Therefore, new early maturing variety with large fruits, C. kousa var. ‘SKK 2-1’ is easily propagated by softwood cutting or grafting and then is a promising cultivar as a woody landscape plant.

• Korean Journal of Breeding Science
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• v.42 no.3
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• pp.241-244
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• 2010

A new hybrid variety of pasqueflower, 'Yeonhong', was derived from an interspecific cross between Pulsatilla davurica and P. koreana at the Jeollanamdo Agricultural Research and Extension Services (JARES) in Naju, Korea. The original cross was performed in 2001, and the 'Yeonhong' hybrid was established in 2003 after two years of selective breeding. 'Yeonhong' is characterized by deep pink flowers and is self-incompatible. The inherent characteristics of the variety are deep yellow anthers, a deep pink stigma, six petals, and green leaf color. 'Yeonhong' blooms twice a year. The agronomic characteristics of the variety are 26.5 flowers per plant, 58.6 cm in flower height, 46.8 cm in cut flower length, 11.5 cm in bract width, and 34.4 cm in leaf length. Flower characteristics include 8.4 days of longevity for cut flowers and 34 days of longevity for bracts. The new variety is suitable for use as a cut flower.

• Korean Journal of Breeding Science
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• v.42 no.3
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• pp.245-247
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• 2010

A new pasqueflower (Pulsatilla koreana) variety, 'Gyeobi,' was derived from a mutation of native P. koreana at the Jeollanamdo Agricultural Research and Extension Services (JARES) in Naju, Korea. The 'Gyoebi' was obtained by treating seeds with 3 mM of a chemical mutagen, sodium azide, for 16 hr in 2001. The variety was established in 2005 after two years of selective breeding. 'Gyeobi' is characterized by reddish purple flowers with 12 double petals. The inherent characteristics of the variety are deep yellow anthers and reddish purple stigmas. The agronomic characteristics of the variety are 6.3 flowers per plant, 26.4 cm in flower height, 14.2 cm in leaf length, 7.5 cm in flower width, and 11.0 cm in bract width.