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RISS 인기검색어
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- 저자 : 鄭奎鎔(Kyu Yong Chung) (검색결과 5 건)
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小麥品種育成 方法에 關한 硏究 第1報 實驗誤差, 品種, 環境 및 品種×環境의 分散 成分 比較와 地域 및 反復數 推定
Don Jae Maeng(孟敦在),Kyu Yong Chung(鄭奎鎔),Jong Jin Hwang(黃鍾珍),Byung Ryul Sung(成炳列) 한국육종학회 1985 한국육종학회지 Vol.17 No.2
Eleven wheat lines were grown at 6 locations for 2 years to analyze the variance components of error, genotype, genotype-location, genotype-year and genotype-location-year, and to estimate their implication for the optimum number of replications and locations, explaining the interpretation of appropriate parameters related to biometrics. In analyses of variance for grain yield and its components, there were non-significant in location and year, but highly singificant in genotypes. As far as G-E interactions are concerned, there showed significant variations, especially indicating the higher significance for 2nd order interaction rather than 1st order. Mean square expectations such as σ²gsy, σ²gy, σ²gs and σ² were computed by subtraction of pooled mean squares, and variance of mean for a genotype(σ²/p) and environmental variance(σ²/g) were obtained from these mean square expectations. Among the variance components for G E interaction, there appeared highest variation in σ²gsy, which would be desirable for plant improvement. Thus, σ²e and σ²gsy, were more important than that of σ²gs and σ²gy because of their implication for estimation of optimum number of replications and locations. It was more suitable to be grown at 6 locations with 2 replications for this experiment, thus indicating that increase of locations would be much more important than that of replications. However, estimate of number of years should be conducted upon basis of gain from selection(Gs) relating to selection intensty and heritability as well as long and short term selections.
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小麥品種 育成 方法에 關한 硏究 Ⅱ. 品種環境의 交互作用과 選拔效果
Don Ja e Maeng(孟敦在),Kyu Yong Chung(鄭奎鎔) 한국육종학회 1985 한국육종학회지 Vol.17 No.4
A study was made on 11 wheat lines to investigate the G-E interaction and their implication for prediction of the optimal number of replications, locations and years affecting upon the GAIN FROM SELECTION (Gs) for plant improvement on selection, explaining the interpretation of appropriate parameters related to genetic and environmental variances, variance and standard error for each variance compoment, and Gs. There appeared higher significant variations in 2nd order G-E interaction than 1st order G-E interaction, being desirable for plant selection programme. An examination of the relative magnitudes of the estimated variance components indicates that the important ones are σ²e and σ²gsy, which compute numbers of replications and locations as σ²e/σ²gsy, and σ²gsy/σ²gy, respectively. Broad sense heritability (h²) was calculated in grain yield and its components showing relatively high values. In general, Gs is augmented by numbers of replications, locations and years, and will be expanded by strong selection appearing high selection intensity. However, selection is usually conducted in early populations, sometimes which loss desirable genes. This will be protected by several selections as means of increase of number of replications. The most consideration for determining the number of experimental year (Y) is Gs/Y on programme of long or short term selections, no mather how Gs is augmented by increase of experimental years.
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산국 (Chrysanthemum boreale) 휘발성 추출액의 항균 및 항진균활성
차정단,김태영,우원홍,정규용,김강주,길봉섭 원광대학교 생체재료·매식연구소 1999 원광생체재료·매식 Vol.8 No.1
To investigate the antimicrobial and antifungal activity of Chrysanthemum boreale(C. boreale) essential oil, the growth inhibition against Aspergillus nidulans, Fusarium oxysporum, Alternaria mali, Staphylococcus aureus, Streotococcus pyogenes, Streptococcus mutans and Escherichia coli in the presence of the essental oil was monitored by agar dilution method. The antifungal effect of C. boreale on Aspergillus nidulans, Fusarium oxysporum and Alternaria mali as affected at the concentration of 400 ppm. The antibacterial effect of C. boreale on staphylococcus aureus, streptococcus pyogenes and Streptococcus mutans was affected at the concentration of 0.4 μl, while growth of E. coli was not inhibited at the concentration of essential oil. The results of this experiment on microorganisms indicated that naturally occuring chemical substances from C. boreale might have biologically toxic activities, that is, allelopathic potentials to the microorganisms.
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김진경,정규용,이봉호,박충범 한국국제농업개발학회 2001 韓國國際農業開發學會誌 Vol.13 No.2
지금까지 살펴본 바와 같이 우리 나라의 육지면 재배는 1906년에 시작되어 1996년에 사라지고 말았다. 육지면 재배가 이처럼 짧은 기간에 사라지게 된 것은 무엇보다도 경제적인 측면에서 목화 농사는 수지가 맞지 않기 때문인 것 같다. 이는 우리 나라의 기후 풍토가 외국의 목화 주산지에 비하여 충분한 생육기간을 확보하기 어려워 순치기나 곁순따기 등 많은 노동력이 투입되고 품질도 수입산에 비하여 떨어지므로 국내 수요 원면을 전량수입만으로 대체하였기 때문이다. 그러나 목화는 염해지에서도 다른 작물보다는 비교적 잘 견디는 편이며 국내 간척지 면적도 많이 늘어나고 있으므로 다른 작물의 재배가 어려운 간척지에서는 목화를 재배하여 국내에서 소비되는 방직용 섬유 이외의 솜의 일부라도 국내산으로 대체해야 하지 않을까 생각된다. 왜냐하면 목화는 방직용 섬유 이외에도 종이용 섬유나 또는 탈지면, 베개용, 방석용 등 특수용도로 쓰일 수 있으며 특히 목화씨의 면실유는 고급 식용유로 쓰이고 면실박은 가축의 사료로 쓰이는 등 용도가 다양하므로 이러한 수요의 일부를 간척지 재배로 충당한다면 상당한 이득도 있을 것으로 생각된다. 어쨌든 한 작물이 90년을 일기로 사라진 것을 안타깝게 생각하며 특히 특용작물을 연구하는 연구자로서 과거의 기록들을 정리해 봄으로써 후일의 참고에 도움이 되고자 하였으며 더욱이 육지면 연구의 출발은 우리 나라에서 근대적인 농업 연구의 출발점이 되기도 하므로 더욱 많은 참고와 살아있는 정보가 될 것으로 보아 가급적 원본을 그대로 제시하는데 역점을 두어 작성하였다. The historical background of upland cotton(Gossypium hirsutum) cultivation in Korea was reviewed and discussed to refer the future researchers or interesters. The first cultivation of upland cotton in Korea was started on 1904 at the "Gohado" of which a small island located near Mokpo in Jeonnam province of southwestern part of Korean peninsula. In 1941, the cultivation of upland cotton was replaced to the asiatic cotton(G. arboreum) acreage about 97% of which 317,056㏊ throughout the country. However the cultivation area of upland and asiatic cotton was only 5㏊ whole the country in 1996 and disappeared in 1997 in southern part of Korea.
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