• Title/Summary/Keyword: Pyeongwon

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An Early-Maturing, Blast Resistant and High Quality Rice Cultivar "Pyeongwon" (벼 조생 단간 내도열병 고품질 신품종 "평원")

  • Ryu, Hae-Young;Jeon, Yong-Hee;Jung, Kuk-Hyun;Shin, Young-Seop;Hwang, Hung-Goo;Kim, Hong-Yeol;Kim, Myeong-Ki;Jung, O-Young;Won, Yong-Jae;Kim, Yeon-Gyu;Yang, Chang-In;Lee, Jeom-Ho;Lee, Jeong-Il;Lee, Jeong-Heui;Choi, Yoon-Hee;Yang, Sae-Jun;Ahn, Eok-Keun
    • Korean Journal of Breeding Science
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    • v.41 no.2
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    • pp.177-181
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    • 2009
  • 'Pyeongwon' is a new japonica rice cultivar which is developed from a cross between Jinbu19 and Samjiyeon4 from North Korea by the rice breeding team of National Institute of Crop Science, RDA. Pyeongwon has about 107 days duration from seeding to heading in mid-northen plain, alpine, north-eastern coastal and southern alpine areas. It has about 67 cm culm length and tolerance to lodging. Pyeongwon has 13 tillers per hill and 82 spikelets per panicle. It showed tolerance to heading delay and spikelet sterility due to cold treatment similar to Odaebyeo. It also showed slow leaf senescence and moderate tolerance to viviparous germination during the ripening stage. Pyeongwon has resistance to blast disease but susceptible to stripe virus and brown planthopper. Milled rice of Pyeongwon has translucent kernels, relatively clear non-glutinous endosperm and medium short grain. It is characterized as a low gelatinization temperature and slightly lower amylose content (17.1%) variety compared to Odaebyeo (19.5%) and has good palatability of cooked rice. The milled rice yield performance of this cultivar was about 5.28 MT/ha by ordinary culture in local adaptability test for three years. This cultivar may be highly adaptable to the mid-northen plain, alpine, north-eastern coastal and southern alpine areas of Korea.

Agronomic characteristics of stay-green mutant derived from an early-maturing rice variety 'Pyeongwon'

  • Won, Yong-Jae;Ji, Hyeon-So;Ahn, Eok-Keun;Lee, Jeong-Heui;Jung, Kuk-Hyun;Lee, Sang-Bok;Hong, Ha-Cheol;Hyun, Ung-Jo;Ha, Woon-Goo;Kim, Myeong-Ki;Kim, Byeong-Ju
    • Proceedings of the Korean Society of Crop Science Conference
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    • 2017.06a
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    • pp.72-72
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    • 2017
  • We found a new stay-green mutant from 'Pyeongwon' which is an early-maturing rice variety in Korea. The mutant showed green leaves after grain ripening period and it maintained higher SPAD value than wild type rice plant and original variety 'Pyeongwon'. The stay-green trait in rice, three genes have been identified up to date. The non-yellow coloring1 (NYC1) gene encodes a chloroplast-localized short-chain dehydrogenase/reductase (SDR) with three transmembrane domains. The non-yellow coloring3 (NYC3) gene encodes a plastid-localizing alpha/beta hydrolase-fold family protein with an esterase/lipase motif. The Sgr gene encodes a novel chloroplast protein and regulates the destabilization of the light-harvesting chlorophyll binding protein (LHCP) complexes of the thylakoid membranes, which is a prerequisite event for the degradation of chlorophylls and LHCPs during senescence. After sequencing the PCR products, we found a single nucleotide variation($A{\rightarrow}T$) in the NYC1 gene, which changes the amino acid lysine to methionine. The NYC1 gene encodes a short-chain dehydrogenase/reductase(SDR) protein. And we confirmed the co-segregation between SNP and stay-green trait from genotyping the progenies of the mutant.

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LA-ICP-MS U-Pb Zircon Age of the Granite Gneiss from Jeungsan-Pyeongwon Area of North Korea (북한 증산-평원지역 화강편마암의 LA-ICP-MS U-Pb 저콘 연대)

  • Song, Yong-Sun;Park, Kye-Hun;Lee, Ho-Sun;Lin, Cao;Yuji, Orihashi
    • The Journal of the Petrological Society of Korea
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    • v.18 no.2
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    • pp.171-179
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    • 2009
  • LA-ICP-MS U-Pb zircon age was determined from the granite gneiss from Jeungsan-Pyeongwon area located to the west of Pyeongan Basin, North Korea, yielding concordant age of $1,873{\pm}19(2{\sigma})$Ma interpreted as Paleoproterozoic granitic magmatism. Considering relatively precise data reported recently using SHRIMP and LA-ICP-MS, ages around 1,870 Ma have been most frequently reported from Precambrian basement rocks of Korean peninsula, including Yeongnam, Gyeonggi, and Nangnim massifs altogether. Geologic events of this period are interpreted as not only granitic magmatism but also hightemperature regional metamorphism depending on their localities. The magmatic and regional metamorphic events of similar periods have also been reported from neighboring cratons of both North China and South China. Therefore, we need more data and efforts to decipher correlation between Precambrian basements between Korea and China.

The Study of Danger Rate for Improvement of Traffic Facilities (교통시설개선을 위한 위험도 도출에 관한 연구)

  • Sohn, Jin-hyeon
    • Journal of the Korean Society of Industry Convergence
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    • v.9 no.4
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    • pp.285-291
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    • 2006
  • A traffic accident is occurred by unbalance of reciprocal action of driver, vehicle and road conditions. To prevent the traffic accident, rapid and perfect road improvement is needed. But most of road improvement plans have insufficient budget. So decision maker has to determine the priority to invest. A model in this study, analyzing the effect of road conditions to the traffic accident, helps to decide the priority in road improvement. This study considered five danger indices ; 1) traffic volume, 2) speed variance, 3) vehicle mixing rate, 4) curved line radius, and 5) difference between design speed and running speed. Danger rate composed by five indices can be a scale of priority of improvement. The model in this study didn't consider all of factors about traffic accident. But this study can propose the methodology for traffic safety policy. For deriving the model, this study used data from highways in Korea and United States. Therefore the model has to apply the highways only.

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A Study on Analytic Hierarchy Proces for Construction Planning -Research on Examples of Railway Route Selection- (건설계획 수립시 계층분석적 의사결정법 적용방안에 관한 연구 -철도노선 선정시 활용사례 연구-)

  • Sohn, Jin-Hyeon;Cha, Cheol
    • Journal of the Korean Society of Industry Convergence
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    • v.10 no.4
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    • pp.249-254
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    • 2007
  • Recently, the items of construction planning have magnified and specialized and the problems occurring at the first step of the construction planing process have complicated. In this research, AHP(Analytic Hierarchy Process) method which is simple to apply and clear to decide has been proposed when a people making a plan at the first step of the construction planing process. As an example, the best solution has been obtained in a railway construction line choice that consist of various items by applying for this method, which proves the possibility of application of this method to the complicated problems.

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Utilization of Centrifuge Test in Geoenvironmental Engineering: Consolidation and Contaminant Transport at Capped Dredged Sediment (원심모형실험의 지반환경공학적 이용: 캡핑된 준설퇴적토의 압밀과 오염원 이동)

  • Kim, Tae-Hyung;Kang, Ki-Min;Lee, Jeong-Woo;Jung, Su-Jung
    • Proceedings of the Korean Geotechical Society Conference
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    • 2006.03a
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    • pp.1060-1067
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    • 2006
  • Sandy soils are generally used as a capping material to reduce the pollutants transport from the contaminated dredged sediment. However, dredged material capping is not widely used because regulatory agencies are concerned about the potential for contaminants migration through the cap. Movement of contaminated pore water from sediment into cap is mainly related to sediment consolidation during and after cap placement. To evaluate the significance of consolidation induced transport of contaminants from sediment into cap, research centrifuge tests were conducted. Centrifuge test results illustrate that advection and dispersion are the dominant contaminants transport processes and that capping reduces the potential of contaminant migration from the dredged sediment effectively.

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A Study on the Property of Dredging Soils Stratified by Two dimensional Segregating Sedimentation (2차원 분리퇴적에 의한 준설토의 성상에 관한 연구)

  • Kim, Hyeong-Joo;Shim, Min-Bo;Jeon, Hye-Sun;Lee, Min-Sun;Paek, Pil-Soon;Choe, Dae-Il
    • Proceedings of the Korean Geotechical Society Conference
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    • 2006.10a
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    • pp.481-489
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    • 2006
  • Two dimensional diffusion model test was conducted to investigate the sedimentation properties and consolidation process of reclaimed ground using dredging coarse soil which is composed of passing amount 20 percentage and 45 percentage of #200 sieve size respectively. The passing amount of #200 sieve size affected on sedimentation properties. The coarse soil which is passing amount of 20 percent showed that the sedimentation structure was layered type and passing amount of 45 percentage was wall-partition type according diffusion distance. Furthermore, the water content of surface and section, and distribution of fine soil were changed according to diffusion distance. and the change amount of pore water pressure and strength property when soil is diffused, segregated and accumulated can be applied efficiently in design of dredging and reclamation.

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Kinematic Analysis of Accuracy Evaluation of Pyeongwon Poomsae (정확성 평가결과에 따른 태권도 평원 품새 동작의 운동학적 분석)

  • Jo, Yong-Myung;Ryu, Jae-Kyun;Kim, Young-Suk
    • Korean Journal of Applied Biomechanics
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    • v.25 no.4
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    • pp.431-440
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    • 2015
  • Objective : The purpose of this study was to investigate the relations between accuracy score and the motions which are performed in PyeongWon Poomsae, thereby developing objectivity in accuracy evaluations for Poomsae competitions. Method : The subjects were six male Poomsae players (age: $21.2{\pm}1.17yrs$, height: $173.4{\pm}3.95cm$, weight: $67.7{\pm}7.65kg$). A three-dimensional motion analysis was performed on the subjects using six high-speed cameras (60 frames/sec) and subjects' performed motions were evaluated by 5 evaluators. The entire Pyeong Poomsae was divided into 13 events and 9 phases; there were three pairs of symmetric phases among them: front kick & turning side kick phases (3PH, 3-1PH), arm motion & stance phases (4PH, 4-1PH), side kick with Hakdari-stance phases (5PH, 5-1PH). Performance time, change and range of COM, height of vertex, and foot of side kicks were analysed. The Data was analysed utilizing correlation analysis. Results : There was a positive correlation between accuracy score and the difference between right and left range of COM (X direction) at 4PH (r=0.921, p=0.009). Conclusion : The results of our study indicate that it is necessary to consider some of objective criterion such as performance time, COM range, and symmetrical movements in accuracy evaluations of Poomsae competitions.

Physicochemical Characteristics of Fermented Soybean Products with Aspergillus Strain (Aspergillus속 균주를 이용한 콩 발효물의 이화학적 특성)

  • Shin, Dong Sun;Choi, In Duck;Lee, Seuk Ki;Park, Ji Young;Kim, Nam Geol;Jeong, Kwang-Ho;Park, Chang Hwan;Choi, Hye Sun
    • The Korean Journal of Food And Nutrition
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    • v.33 no.3
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    • pp.279-286
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    • 2020
  • In this study, the properties of the substances fermented soybean producted by manufacturing with several Aspergillus strains were investigated. The five soybean cultivar that includes miso, jinpung, pyeongwon, cheonga and chamol were used in this experiment. The pH and total acidity were 6.30~6.66%, and 0.27~0.48%, respectively with differences depending on the samples. The color values for L value, a, and b value were 60.28~69.80, 0.64~3.68, and 11.48~31.21, respectively. The amylase activities, protease activities, and amino-type nitrogen of the jinpung samples were the highest among all cultivars. The mold counts the fermented soybean products by cultivars were 6.18~9.14 log CFU/g, and miso was the highest. Free amino acid and organic acid contents were highest in the jinpung and showed different composition depending on each sample. A total of 18 volatile aroma-compounds, including two acids, four alcohols, four ketones, three phenols, one furan, three pyrazines, and one miscellaneous compounds. In conclusion, it is expected that manufacturing A. oligze inoculation fermented soybean products using jinpung cultivar will improve quality.

Application of the $\phi=0$ Analysis for Dredged and Reclaimed Ground (준설매립지반에 대한 $\phi=0$ 해석의 적용성)

  • Kim, Ju-Hyun;Jeong, Sang-Kug;Shim, Min-Bo;Lee, Song
    • Journal of the Korean Geotechnical Society
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    • v.20 no.1
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    • pp.21-27
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    • 2004
  • In this test, there was two-dimensional model loading test implemented for analysis with respect to the problem of evaluating bearing capacity and the application range on the dredged and reclaimed ground, so it was possible to get the following result by comparing a result of loading test and an equation proposed previously. When the difference between average undrained shea. strength by (equation omitted)B of loading board width and the strength under. (equation omitted)B is mere than $\pm50%$, the applicability of Nc(coefficient of bearing capacity where $\phi=0$ analysis is considered in the single layer) was declined. As well, using Nc=5.7, 5.14(coeffcient of bearing capacity where $\phi=0$ analysis is applicable to saturated clay without special limit) for evaluating bearing capacity on the dredged and reclaimed ground causes poor applicability, therefore that seem to be applicable when water content is less than about 75% which makes the unconfined compression test possible.