• 한국자원식물학회:학술대회논문집
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• 한국자원식물학회 2003년도 제10차 국제학술회의 및 추계정기 학술발표회
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• pp.40-42
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• 2003

In order to examine the possibility that oil seed rape could be used as a forage fodder crop and to select the most suitable variety of forage rape at the southern area of Korea, two varieties of oil seed rape currently grown for oil production and six introduced varieties of forage rape with relatively high yield and high nutritional value were grown at the same condition and yield components were observed. Forage rape was superior to oil seed rape in terms of yield components, plant fresh weight and plant dry mater weight. Velox was superior to any other variety of forage rape in these characters. When plant dry matter weight of the rape was subdivided into four components such as a main stem, branch stems, main stem leaves and branch leaves, contribution of these components to plant dry matter weight was in the order of branch stems, branch leaves, the main stem and main stem leaves. Dry matter percentage of the rape ranged from 9.32 to 11.08 percent, which was somewhat low value. There was no significant difference between two groups of the rape in terms of dry matter percentage. Velox showed somewhat higher value in dry matter percentage.

• Asian-Australasian Journal of Animal Sciences
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• 제16권2호
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• pp.172-175
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• 2003

The regression equations of dry weight of planktonic biomass upon physico-chemical characteristics of fifteen ponds in three replicates under the influence of artificial feed, broiler manure, buffalo manure, N:P:K (25:25:0) and a control pond was obtained after one year of experimental period by using stepwise regression method. Water samples from each of the ponds were analyzed daily. However, the average values were calculated on the basis of 15 day intervals designated as fortnight. In artificial feed supplemented pond the regression of average nitrates on dry weight of planktonic biomass accounted for 71.7% of the variation in biomass. In broiler manure fertilization pond the regression of total nitrogen on dry weight of planktonic biomass held it responsible for more than 74.6% of variation in biomass. In buffalo's manure fertilized pond more than 82% of the variations in biomass were due to total nitrogen. In case of N:P:K (25:25:0) treated pond 66% of the variation in the dry weight of planktonic biomass was due to average nitrates. The control pond showed the dependence of biomass on light penetration. This equation explained more than 62 percent of variation in biomass. Other variables also showed some contribution towards variation in biomass under all the treatments in these regression studies.

• 한국작물학회지
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• 제33권1호
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• pp.81-86
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• 1988

왕골 육종을 위한 형질상호간의 유전관계를 조기에 추정하고 효율적인 선발을 위한 기초자료를 얻고자 국내수집종 64품종을 공시하여 유전력, 표현형상관, 유전상관, 환경상관을 조사한 결과를 요약하면 다음과 같다. 1. 7개 형질에 대한 유전력 중 대부분의 형질에서는 높았으나 건피수량에서 만은 다소 낮게 평가되었다. 2. 형질상호간의 상관관계는 경장은 건수중과 건피수량에서, 경의 직경 역시 건수중과 건피수량에서 가장 높은 유의차로 정의 상관을 보였다. 3. 수량과 타형질과의 상관이 가장 높았든 형질은 경장, 경의 직경, 건수중이었으며 경로계수의 분석결과도 이들 형질의 직접효과가 가장 높았다.

• 한국농공학회논문집
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• 제65권3호
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• pp.15-28
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• 2023

The compaction properties of the soil change depending on the physical properties, and are also affected by crushing of the particles. Since the particle size distribution of soil affects the engineering properties of the soil, it is necessary to analyze the material properties to understand the compaction characteristics. In this study, the size of each sieve was classified into four in the particle size analysis as a material property, and the compaction characteristics were evaluated by multiple regression and maximum dry unit weight. As a result of maximum dry unit weight prediction, multiple regression analysis showed R² of 0.70 or more, and DNN analysis showed R² of 0.80 or more. The reliability of the prediction result analyzed by DNN was evaluated higher than that of multiple regression, and the analysis result of DNN-T showed improved prediction results by 1.87% than DNN. The prediction of maximum dry unit weight using particle size distribution seems to be applied to evaluate the compacting state by identifying the material characteristics of roads and embankments. In addition, the particle size distribution can be used as a parameter for predicting maximum dry unit weight, and it is expected to be of great help in terms of time and cost of applying it to the compaction state evaluation.

• 한국작물학회지
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• 제38권4호
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• pp.324-329
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• 1993

콩의 생식생장기인 착협시(R3)에 상부 40%와 하부 60%로 구분하여 엽제거와 협제거 처리에 의한 엽수와 엽건물중, 종실부와 종실건물중, 그리고 협과 경건물중에 미치는 영향을 구명하기 위하여 1992년 고려대학교 자연자원대학 적소실험농장에 황금콩을 공시하여 실시한 시험결과를 요약하면 다음과 같다. 1. 상엽하협제거처리로 식물체 하부의 엽수와 엽건물중이 증가되었다. 2. 종실부와 종실건물중은 상엽하협제거로 감소되었다. 3. 상엽하협제거는 하부의 경건물중을 증가시켰으나 상부의 협건물종은 감소시켰다. 4. 상엽하협제거에서 엽/종실 비율은 3.53로 가장 높았고 수수지수는 27%로 가장 낮았다. 5. 하엽상협제거는 상엽하협제거보다 동화\ulcorner질의 전류량이 많았다.

• 한국작물학회지
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• 제40권3호
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• pp.340-350
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• 1995

이탈리안 라이그라스의 염해반응에 대한 기초 자료를 얻고자 NaCl의 8개 농도에서 14개 품종(2배체:7 4배체:7)의 발아율과 유묘건물중, 엽록소 및 유리 proline함량을 조사하였다. 1. 발아율은 NaCl 300mM 이상에서 크게 감소하였으며 대조구에 대한 50%의 발아감소 NaCl농도는 344mM이었다. 2배체품종은 4배체품종보다 감소 정도가 컸으며 NaCl의 농도가 높을수록 발아율에 대한 품종들의 차이가 크게 나타났다. 2. 지상부 건물중은 NaCl 166mM에서 대조구에 대한 50%의 감소율을 보여 발아기보다 유묘기에 NaCl에 대한 영향이 더욱 컸는데, 품종들의 발아율과 지상부 건물중과는 상관관계가 없었다. 3. 지하부 건물중은 NaCl농도가 높아질수록 감소 정도가 커서 NaCl 148mM에서 50%의 감소가 나타났으며, 품종들의 지상부 건물중과 지하부 건물중은 유의적인 상관관계가 있었다. 4. 지상부 건물중과 지하부 건물중은 NaCl의 각 농도에서 2배체가 4배체보다 높았다. 5. Total 엽록소 함량은 NaCl농도가 높아질수록 증가하였는다 엽록소 a가 엽록소 b보다 함량이 더욱 증가하였으며, 엽록소 a는 4배체가 2배체보다 높았으나 엽록소 b는 2배체가 4배체보다 높았다. 품종들의 엽록소 a함량과 지상부 건물중과는 NaCl 150mM 이상에서 높은 상관관계가 인정되었다. 6. 유리 proline함량은 NaCl처리에 의하여 현저히 축적되었는데 2배체와 4배체 사이에는 별다른 차이가 없었으며, 품종들의 지상부 건물중과도 상관관계가 없었다.

• 한국작물학회지
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• 제48권5호
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• pp.355-360
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• 2003

The responses of six mungbean [Vigna radiata (L.) Wilczek] varieties to Rhizobium inoculation on number and dry weight of nodules, nitrogenase activity of root nodule bacteria, dry weight of shoot and root, nitrogen content, and uptake by shoot were investigated. The mungbean varieties were BARI Mung-2, BARI Mung-3, BARI Mung-4, BARI Mung-5, BINA Moog-2, and BU Mung-1. Two-third seeds of each variety were inoculated with Rhizobium inoculant and the remaining one-third seeds were kept uninoculated. Rhizobium strains TAL 169 and TAL 441 were used for inoculation of seeds. Inoculation of seeds with Rhizobium strains significantly increased nodulation, nitrogenases activity, dry matter production, nitrogen content, and uptake by shoot of the crop compared to uninoculated control. There was positive correlation among the number and dry weight of nodules, nitrogenase activity, dry weight of shoot and root, nitrogen content, and uptake by shoot of the crop. It was concluded that BARI Mung-4 in association with Rhizobium strain TAL 169 performed best in recording nodulation, nitrogenase activity, dry matter production, and nitrogen uptake by shoot of mungbean.

• 한국유기농업학회지
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• 제5권2호
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• pp.93-104
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• 1997

In order to investigate the growth response of grasses to chitosan solution amended soil were studied from the standpoint of estimating the growth stimulating adequate concentrations of chitosan solution amended soil in each grass. Three species in this experiment used were orchardgrass, tall fescue and reed canarygrass. Six different concentrations of chitosan solution amended soil were 0%(control), 0.01%, 0.05%, 0.1%, 0.5% and 1.0%, respectively. The resulte obtained were as follows ; 1. Leaf area(LA), dry weight of leaf(LW), dry weight of shoot(SHW), biological yield(BY), C/f ratio and T/R ratio were significantly different between species. 2. Growth stimulating effect by chitosan solution amended soil were found in plant length(PL) and T/R ratios of grasses. 3. Adequate concentrations of chitosan solution amended soil were different between species. The highest values of yield components and dry weight of plant parts were obtained at 0.01% in orchardgrass, 0,05% in reed canarygrass and 1.0% in tall fescue, respectively. 4. The growth response of grasses to chitosan solution amended soil were different between species. Thus, an increase in leaf area(LA) and dry weight of leaf(LW) by chitosan solution amended soil was mainly contributed to increase in dry weight of shoot(SHW) and biological yield(BY) in orchardgrass. Chitosan solution amended soil also stimulated growth of shoot and increased in biological yield(BY) in tall fescue. In reed canarygrass contributed to increase in C/F ratios. 5. Adequate concentrations of chitosan solution amended soil for an economical benefit of cultivation and dry matter production of grasses were ranged from 0.01% to 0.05% levels.

• Journal of Ginseng Research
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• 제28권4호
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• pp.165-172
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• 2004

Ginseng is traditionally cultivated worldwide in cold continental climates. It is now also being cultivated in maritime environments such as New Zealandis. This paper reports a number of growth and quality parameters for plants grown under those conditions over two growing seasons and the intervening winter dormant period. While shoot biomass peaked mid-summer, in contrast, root biomass peaked late autumn/early winter. Starch, sucrose, fructose, glucose and inositol were detected in the roots. Starch concentrations were highest in early autumn (mean 470 mg $g^{-1}$ dry weight) and lowest in mid spring (218 mg $g^{-1}$ dry weight). Sucrose concentrations were low during early summer until late autumn but increased rapidly with the onset of winter and peaked during mid spring (168 mg $g^{-1}$ dry weight). Fructose and glucose concentrations were similar and peaked in late spring (5.3 and 6.2 mg $g^{-1}$ dry weight). Inositol concentrations peaked in mid summer (1.7 mg $g^{-1}$ dry weight). Starch/sugar ratios were high during summer and autumn and low during winter and spring. Ginsenoside concentrations and profiles showed that the six major ginsenosides, Rgl, Re, Rb1, Rc, Rb2 and Rd, were present, but Rf was absent. Concentrations did not vary with sampling date. The most abundant ginsenosides were Re (15.9 to 17.5 mg $g^{-1}$ dry weight) and Rb1 (10.7 to 18.1 mg $g^{-1}$ dry weight). Combined, they accounted for < $75{\%}$ of total ginsenoside concentrations. Limited taste tests indicated that highest root quality occurred during late autumn, after the shoots had senesced. However, quality could not be related to plant chemistry.

• 한국미생물·생명공학회지
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• 제42권1호
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• pp.32-40
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• 2014

본 연구에서는 도심 학교 운동장(soil A)과 화단(soil B, C, & D)에서 채취한 토양의 잠재적인 메탄 산화 및 생성능을 평가하였다. 토양 원시료 중 메탄 산화균 수를 정량 분석한 결과, 운동장 토양(soil A)는 $6.1{\times}10^3$ gene copy number/g dry weight soil이었으나, 화단 토양(soil B~D)는 $1.6-1.9{\times}10^5$ gene copy number/g dry weight soil이었다. 토양을 넣은 혈청병에 메탄 가스를 주입하여 잠재 메탄 산화능을 평가한 결과, 운동장 토양은 다른 토양보다 메탄을 산화하기까지 긴 유도기를 보였으나, 유도기 이후에는 화단 토양과 거의 유사한 메탄 산화능을 나타냈다. 또한 운동장 토양의 메탄 산화균 수는 $2.3{\times}10^7$ gene copy number/g dry weight soil까지 증가하여 화단 토양의 메탄 산화균 수($1.2-2.8{\times}10^8$ gene copy number/g dry weight soil)과 유의적 차이를 보이지 않았다. 교정에서 채취한 토양의 메탄 생성 거동도 메탄 산화와 유사한 패턴을 보였다. 토양 원시료의 메탄 생성균 수는 화단 토양($1.3-3.4{\times}10^7$ gene copy number/g dry weight soil)에 비해 운동장 토양($1.7{\times}10^5$ gene copy number/g dry weight soil)이 훨씬 적었다. 그러나 토양에 유기물을 첨가한 후 메탄 생성 현상이 발휘된 후에는 메탄 생성 균수는 운동장 토양과 화단토양 모두 $10^7$ gene copy number/g dry weight soil 수준이었다. 본 연구를 통해 도심 교정에서 채취한 네 종류의 토양은 모두 메탄 산화균 및 생성균을 가지고 있으며, 메탄 산화와 생성에 적합한 조건이 되면, 메탄 산화균 및 생성균의 개체군이 증가하여 메탄을 산화하거나 생성할 수 있는 잠재력을 지니고 있음을 알 수 있었다.