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        검색결과 177

        141.
        2013.10 KCI 등재 서비스 종료(열람 제한)
        This study was carried out to investigate the difference of the content of soil chemical components and growth characteristics in five years old ginseng affected by application of manure in paddy-converted field. As all livestock manure regardless of kinds increased along with the whole soil chemical component, including the pH and EC in 2008. Change in the EC of control plot was slightly increased but not exceeded 1 ds/m over the years. However, the changes in the EC of livestock manure regardless of kinds and amounts were highly increased and irregularly exceeded 1.5 ds/m in 2012. The 5 years old ginseng root fresh weight, treatment of fertilizing pig manure compost 4 ton per 10 areas (PMC 4t on/10a) and fowl manure compost 4 ton per 10 areas (FMC 4 ton/10a), were superior to the others. But there were no difference between PMC 4 ton/10a, FMC 4 ton/10a and control. The standing crop rate 39.6%, treatment of fertilizing cattle manure compost 4 ton per 10 areas (CMC 4 ton/10a), was best in all livestock manure. However that was relatively lower than control. Physiological disorder occurrence rates of livestock manure related with leaf and root of ginseng were also higher than that of control. If excessively using non-decomposed livestock manure, It would be caused physiological disorder in many ways. It is a big problem to be producing the quality ginseng. More research is needed to find out the economic and effective fertilizer.
        145.
        2013.09 KCI 등재 서비스 종료(열람 제한)
        Morphometric changes in the Ussurian bullhead, Leiocassis ussuriensis, and the Korean bullhead, Pseudobagrus fulvidraco, were observed during the early period of growth. Yolk length, yolk height, and yolk volume in the two species decreased within 9 days post-hatching (DPH) (p<0.05). The body lengths and body heights of both species increased gradually to 150 and 130 DPH, respectively (p<0.05). The horizontal distance between the anteriormost extension of the head and the anterior insertion of the pectoral fin, the anteriormost extension of the head × the verticality position of the anterior insertion of the primary dorsal fin rays, and the anterior insertion of the primary dorsal fin × the anterior insertion of the pectoral fin were greater in the Korean bullhead than in the Ussurian bullhead (p<0.05). However, the relative sizes of the head region, pectoral fin, ventral fin, and anal fin were greater in the Ussurian bullhead than in the Korean bullhead (p<0.05), and relative body depth and the size of the outer-mandible barbel were greater in the Korean bullhead than in the Ussurian bullhead (p<0.05). The growth curves of the morphometric characteristics of both species were divided into three types.
        146.
        2013.08 KCI 등재 서비스 종료(열람 제한)
        This study was carried out to have the basic and applied information to develop the cultivation methods and models and to increase the productivity of high-quality ginseng. Plant height was dramatically increased from one year old to four years old, and then it was grown up very slowly. Stem length was shown similar tendency as the plant height did. Its range were from 9.4 cm in one year old to about 42.4 cm in four year-old ginseng. The leaf area was clearly increased until four years old, 10.1cm2 in one year old to 204.9cm2 in four years old, while it was slightly increased after four years old. Root length was continuously increased from one year old until four years old, and then it was grown up very slowly. Tap root length which was measured was appeared about 8 cm from three years old to six years old, showing not much different among the year-olds. The root diameter was continuously increased from one year old to six year-old ginseng, about 2.9 mm and about 19 mm, respectively. The moisture content was higher on the shoot than that on the root. It was slightly decreased as they were getting old. In shoot part, the rate of leaves and stems based on dry weight was about 1 : 1. In the root, the dry weight of tap root was heavier than that of lateral root. The dry weight of shoot was decreased after four years old, while it of the root was continuously increased until six years old, resulting the production of ginseng root. Based on the results of this study, growth characteristics of shoot and root of ginseng were dramatically increased from one year old to four years old and then their growths were appeared different between shoot and root, showing not much growing in shoot and keep growing in root.
        149.
        2012.09 KCI 등재 서비스 종료(열람 제한)
        Purpose - The article studies aims to construct the center of economy in the upriver area of Chang Jiang, and has realistic significance probing into the contribution of insurance essential factor market to economic development on the contribution role of essential factor market of insurance in financial industry development to economic growth in Chongqing in both aspects of direct and indirect contribution by the way of demonstration analysis. Research data and methodology - The data are from Statistic Yearbook in Chongqing in 1997-2008.The conclusion shows that essential factor market of insurance development falls behind of economic growth in direct aspect; BBD, BLD and FIR could pull economic growth, but ID just restrain economic growth in Chongqing. Results -The estimate coefficient sigh of BDD, BLD, FIR are plus but ID is not, it is to say the increase of bank deposit dump could impel economic growth, which is accord with general thought. Conclusions - At last, the article Having Studied on the contribution role of essential factor market of insurance in financial industry development to economic growth in Chongqing by the way of demonstration analysis.
        150.
        2012.08 KCI 등재 서비스 종료(열람 제한)
        The management and control of mineral nutrients is one of most important techniques to increase the productivity and the quality of Korean ginseng. The mineral nutrients are measured with different plant tissues and different growth stages of 2-year-old ginseng grown under hydroponic culture with two different temperatures. The content of N, P, Ca, and Mg were higher at low temperature in both leaves and roots than those at high temperature. However, the content of K was high in leaves at low temperature compared to that of high temperature, while it was not significantly different in roots. The uptake amounts of N and K was higher throughout the experimental period at low temperature in both leaves and roots than those at high temperature. However, the uptake amount of P was not clearly different between two different temperatures and among six different growth stages. The uptake amount of N, P, K was generally decreased in leaves from June to August, while it was increased in roots. The relationship between dry weight and mineral nutrients in leaves was appeared positive with N, K, Ca, and Mg, but negative P. In roots, N, K, Ca, and Mg were negative, showing that was positive with only P. Comparing the correlation coefficients among mineral nutrients in leaves, N and K were significantly positive correlation each other. P was significantly positive correlation with Na and Zn. In case of roots, N was highly significant positive correlation with K, Mg, and Mn, but P was negatively correlated with Ca, Cu, Na, Fe, and Zn.
        151.
        2012.07 서비스 종료(열람 제한)
        Drought is one of the major abiotic stresses in agriculture affecting major crops worldwide. Any step taken towards improvement of either crops or its growing conditions which enables the crop to produce comparable yield with less water will help substantially to combat this problem. Water regulating gel-like growth substrate called PRS claims to improve the water use of the plants and helps them to grow better and bigger with less water. To test this claim, we used two crops Pepper and Ficus to grow in pot system with and without PRS. To monitor their growth variation with detailed and precision phenotyping we used the high-throughput, non-destructive digital phenotyping platform- PhenoFab®. The continuous growth information enabled capturing of minor growth variations seen in the plants treated with and without PRS. Results reveal that no significant growth differences were found between PRS treated and non-treated plants, however the PRS treated plants needed 35% less water compared to the non-treated plants. Hence, PRS allows use of less water to grow plants.
        153.
        2011.04 KCI 등재 서비스 종료(열람 제한)
        This study was conducted to examine major growth responses, the production and partitioning of dry matter on different growth stages, and yields and to select the optimal shading material in both quality and productivity of ginseng. Two cultivars of ginseng, Cheonpoong and Geumpoong, were cultivated in the paddy soil with three different shading materials; three-layered blue and one-layered black polyethylene (TBP), blue polyethylene sheet (BPS), and aluminium-coated polyethylene sheet (APS). Plant heights were linearly increased until June 24 and then maintained with showing higher height in Cheonpoong than that in Geumpoong cultivar. Root lengths were gradually increased until October 16. They were longer in Cheonpoong than that in Geumpoong cultivar, showing slightly longer with APS compared to TBP and BPS. The ability of producing dry matter of leaves was much higher from April to June compared to those of other growth periods, whereas its ability of root was concentrated from the end of June to the end of August. Among the shading materials, the ability of producing dry matter of shoot was higher with TBP than those with BPS and APS, while its ability of root was not appeared certain tendency unlike the shoot. The yield of ginseng roots was the highest with TBP among three shading materials and it was higher in Cheonpoong than that of Geumpoong cultivar. The shading materials which affect the light intensity and the temperature would be considered as an important factor to get better quality and productivity of Korean ginseng.
        154.
        2008.03 KCI 등재 서비스 종료(열람 제한)
        신팔달콩2호와 GC83006를 교잡하여 총 118개의 F7 계통을 육성하였다. 127개의 분자마커를 사용하여 유전자지도를 이용하여 종실 및 생육특성에 대한 QTLs분석을 실시하였으며 그 결과를 요약하면 다음과 같다. 1. 100립중, 경장, 엽면적 그리고 개화까지 일수는 정규분포를 보였다. 100립중을 제외한 3개의 형질에서 양친의 값을 벗어나는 초월변이 계통이 관찰되었는데, 특히 개화까지의 일수는 개화기가 지연되는 쪽으로 초월변이 계통이 다수 관찰되었다. 2. 100립중, 경장, 엽면적 그리고 개차까지 일수에 대한 QTL분석 결과, 전체 7개의 QTL이 탐지되었다. 100립중에 관여하는 3개의 QTL은 전체변이의 10.1%~12.5% 를 설명하였고, 경장은 전체변이의 22%를 설명하는 1개의 QTL이 탐지되었다. 엽면적은 전체 변이의 10% 및 8.6%를 설명하는 2개의 QTL이 탐지되었으며 개화기 일수는 전체 변이의 41.0%를 설명하는 1개의 QTL이 탐지되었다. 3. 신팔달콩2호와 GC83006의 모용은 각각 회색과 갈색이었으며 모용색은 1개의 유전자가 관여하는 것으로 나타났다. 분석결과 모용색은 연관군 C2에 위치하는 Satt134 마커와 밀접히 연관되어 있었다. 제색은 신팔달콩2호와 GC83006이 각각 흑색과 황색이었으며 후대 중에는 갈색의 배꼽을 갖고 있는 계통도 발견되었다. 종피색은 신팔달콩 2호와 GC83006이 각각 황색과 녹색을 보였으며 후대에서 황색과 녹색 계통이 1 : 1의 분리비를 보여 종피색에는 하나의 유전자가 관여하는 것으로 나타났고, 이 유전자는 연관군 D1a의 마커 Satt077과 밀접한 연관을 보였다.
        155.
        2008.02 KCI 등재 서비스 종료(열람 제한)
        홍화의 생장해석을 위하여 3월 1일, 4월 1일, 5월 1일 및 7월 1일에 파종한 홍화의 생육상황과 생장분석에 관한 결과는 다음과 같다. 가. 홍화의 발아기간은 저온기 3월 1일 파종에서 발아까지의 소요기간은 24일이었으며, 4월 1일은 8일이었고 고온기로 갈수록 빨라졌다. 나. 개화소요일수도 3월 1일 파종에서는 104일, 4월 1일에서는 79일, 5월 1일과 7월 1일 고온기 파종에서는 각각 65일과 58일로 단축되었으며 파종기별 생육은 3월 1일에 조기 파종한 것이 가장 좋았다. 다. T/R(Top/Root ratio)율은 줄기 신장기부터 수확기까지 완만하게 증가하였으며 7월 1일 파종은 전반적으로 3월 1일파종과 4월 1일 파종에 비하여 T/R율이 낮았다. 라. RGR(Relative Growth Rate)은 줄기가 신장하는 시기에 가장 높았고 개화기 이후는 급격히 생장량이 둔화되었다. 마. CGR(Crop Growth Rate)은 분지시기에 증가하다가 개화직전에 증가속도가 다소 떨어졌으며 개화기에 다시 증가하여 가장 높았다가 그 이후는 둔화되었다. 바. NAR(Net Assimilation Rate)은 줄기신장기에 가장 높았으며 3월 1일에 조기 파종한 것이 가장 높았다.
        156.
        2007.03 KCI 등재 서비스 종료(열람 제한)
        태양광과 반응하여 독특한 광화학적 작용을 하는 이산화티탄(TiO2 )을 벼 잎 표면에 처리하였을 때 벼 엽신의 광합성 대사에 대한 영향을 검토하고 프로테옴 분석을 통해 생리변화를 구명하고자 수행한 결과를 요약하면 다음과 같다. 1. 광합성유효파장이 2,400umolm2s1과 2,200umolm2s1 배치구에서 이산화티탄 10, 20 ppm 처리는 광적응상태의 엽록소형광지수(Yield)를 낮추었고 450umolm2s1 처리구는 엽록소형광지수를 높였다. 2. 노지조건인 PAR 2,400umolm2s1 배치구에서 광합성 명반응의 상대전자전달율은 이산화티탄 10 ppm 처리에서 평균 45 %, 무처리 32.4 %, diuron 10 ppm 처리구에서 15.3%로 이산화티탄 처리는 광합성 명반응의 상대전자전달율을 높였다. 3. UV-B 4.9, 0.6KJm2day1 배치구에서 이산화티탄 처리로 초장이 증가하였고 UV-B 0.15KJm2day1 배치구에서 초장은 증가하고 건물중은 감소하였다. 4. 광합성은 노지의 UV-B 조건인 13.6KJm2day1 배치구에서 이산화티탄 처리로 종가하였고 UV-B 4.9, 0.6, 0.15KJm2day1 배치구는 다소 증가하였으나 통계적으로 유의한 차이는 나타내지 않았다. 5. 이산화티탄 처리 후 자연광 중의 UV-B를 99% 차단하여 저수준으로 조절한 결과 68%의 단백질 발현이 감소하였고 각각 16%의 단백질 발현이 증가 또는 신생 합성되었다. 6. 이산화티탄 20 ppm 처리 후 자연광 중의 UV-B를 99% 차단시켰을 때 주로 광합성 Calvin cycle에서 CO2 결합을 촉매하는 결정구조 Rubisco의 chain E 발현이 감소하였다.
        157.
        2006.10 KCI 등재 서비스 종료(열람 제한)
        저 마약형 대마 품종 육성에 이용하고자 네덜란드 CPRO에서 도입한 저 마약형 유전자원의 특성을 검정한 결과는 다음과 같다. 1. 도입 유전자원들은 고위도인 네덜란드에서 재배했을 때에 비해 중위도인 우리나라에 재배했을 때 개화소요일수가 짧아 경장이 작았다. CBD 함량은 두 지역간 차이가 다소 있는 경향이었으나 THC 함량은 거의 변하지 않았다. 2. 개화소요일수, 경장, 경직경, 생경중 및 섬유수량 등 대마 생육형질들은 서로 간에 고도로 유의한 정의 상관을 보였고, cannabinolds 함량과의 상관에서는 CBD 함량과는 고도로 유의한 정의 상관을 보였으나 THC와 CBN 함량과는 유의한 상관관계를 보이지 않았다. 3. 공시한 44 도입종과 재래종을 군집분석의 Q 상관으로 도출된 r = 0.80으로 선을 그었을 때 3개 품종군으로 나누어졌으며 품종군에도 속하지 않는 것이 4품종이었다. 4. 분류된 모든 품종군은 개화소요일수와 경장이 짧아 우리나라에서 섬유용 품종으로 적합하지 않았고 품종군으로 분류되지 않은 것들 중 도입종 IH3은 THC 함량이 0.08%로 낮으면서 개화소요일수가 122일로 재래종과 비슷하였다.
        158.
        2005.09 KCI 등재 서비스 종료(열람 제한)
        For developing the site-specific fertilizer management strategies of crop, it is essential to know the spatial variability of soil factors and to assess their influence on the variability of crop growth and yield. In 2002 and 2003 cropping seasons within-field spatial variability of rice growth and yield was examined in relation to spatial variation of soil properties in the· two paddy fields having each area of ca. 6,600m2 in Suwon, Korea. The fields were managed without fertilizer or with uniform application of N, P, and K fertilizer under direct-seeded and transplanted rice. Stable soil properties such as content of clay (Clay), total nitrogen (TN), organic mater (OM), silica (Si), cation exchange capacity (CEC), and rice growth and yield were measured in each grid of 10~times10m . The two fields showed quite similar spatial variation in soil properties, showing the smallest coefficient of variation (CV) in Clay (7.6~%) and the largest in Si (21.4~%) . The CV of plant growth parameters measured at panicle initiation (PIS) and heading stage (HD) ranged from 6 to 38~% , and that of rice yield ranged from 11 to 21~% . CEC, OM, TN, and available Si showed significant correlations with rice growth and yield. Multiple linear regression model with stepwise procedure selected independent variables of N fertilizer level, climate condition and soil properties, explaining as much as 76~% of yield variability, of which 21.6~% is ascribed to soil properties. Among the soil properties, the most important soil factors causing yield spatial variability was OM, followed by Si, TN, and CEC. Boundary line response of rice yield to soil properties was represented well by Mitcherich equation (negative exponential equation) that was used to quantify the influence of soil properties on rice yield, and then the Law of the Minimum was used to identify the soil limiting factor for each grid. This boundary line approach using five stable soil properties as limiting factor explained an average of about 50~% of the spatial yield variability. Although the determination coefficient was not very high, an advantage of the method was that it identified clearly which soil parameter was yield limiting factor and where it was distributed in the field.
        159.
        2005.06 KCI 등재 서비스 종료(열람 제한)
        논 재배에 적합한 콩 품종을 선발코자 황금 콩 등 국내 육성 37개 콩 품종을 공시하여 품종간 생육반응과 수량성의 차이를 조사한 결과는 다음과 같다. 1.토양수분함량이 높은 논에서의 콩 재배 시 생육단계별 콩 품종별 주요형질의 생육반응은 매우 다양한데, 특징적인 생육반응은 초기생육이 지연되거나 지하부의 발달이 늦은 반면 지상부가 과번무하여 T/R율이 높아지는 경향이 있으며, 품종간 수량성에 있어서도 팔도콩이 134kg/10a 그리고 도레미콩이385kg/10a 차이가 매우 컸다. 2. 생육초기인 V5 stage와 개화성기인 R2 stage의 엽면적은 지상부 및 지하부 건물중과 각각 고도의 상관관계 (r=0.46**~~0.91**) 를 보였으며, T/R율의 경우 V5 stage에는 지하부 건물중과 부의 상관관계(r=-0.37*) 를 보인 반면 R2 stage에는 엽면적(r=0.46**) 과 지상부 건물중(r=0.65**) 과 유의성 있는 상관 관계가 성립되었다. 3. 수량성은 100립중과 상관관계를 보인 반면 등숙율 포함한 V5 및 R2 stage에서 조사된 다른 형질과는 유의성 있는 상관을 보이지 않았다. 4.농업적 주요형질의 생육반응을 기초로 군집분석 한 결과 공시품종들은 크게 3개 군으로 구분되는데,동일 군의 품종들은 생육습성 등 유전적 유사성은 높았으나 수량성은 다양하였다. 5. Group 1에는 새올콩등 9품종이 포함되는데, 생육초기부터 개화성기까지의 생육이 늦은 반면, T/R율이 낮고 등숙이 양호하여 평균 257kg/10a의 수량성을 보인다. Croup 2는 팔도콩 등 12품종이 포함되는데, 지상부의 생육이 과번무하여 T/R율이 높고 등숙이 불량하여, 평균 230kg/10a의 수량성을 보였다. Croup 3에는 진품 콩 등 16품종이 포함되는데, 대부분 중만생종이며, V5~~R2 stage의 생육이 왕성하고 T/R율은 비교적 낮고, 등숙울 또한 비교적 높아 평균 수량성이 270kg/10a로 가장 높았다. 6. 본 연구결과를 토대로 Group 3에 속하는 품종 또는 301~~385kg/10a 의 높은 수량성을 보이는 신팔달콩2호, 소호콩, 도레미콩, 금강콩, 부광콩, 다장콩 및 검정콩2호 등의 품종을 선별하여 재배한다면 논의 적정 경지면적 유지에 의한 국내 쌀 수급안정 및 안정적인 콩 자급율 향상을 기대할 수 있을 것이다.
        160.
        2005.02 KCI 등재 서비스 종료(열람 제한)
        콩의 논 재배시 생육반응은 밭에서와는 다른 결과가 예상되므로, 논재배 콩의 휴립조건에 따른 생장분석을 분석 하고자 화엄 풋콩 등 5품종을 고휴와 평휴로 재배하여 생육반응을 분석한 결과는 다음과 같다. 휴립조건에 따른 콩의 지상부 생육은 경장의 경우 전 생육기에서 평휴재배시 높은 경향을 보이지만, 분지수와 경직경은 생육 후기로 갈수록 고휴조건에서 큰 경향을 보였다. 그러나 지상부 생육은 재배조건에 따른 차이보다, 품종간 차이가 보다 뚜렷하게 나타났다. 논에서 휴립 조건에 따른 생육단계별 콩의 지상부생육은, 생육초기인 V5 stage에서는 평휴재배시 건물 생산능력이 고휴재배시 보다 높았으나, 생육이 진전될수록 고휴로 재배할 때 건물중 생산이 높았으며, 전 생육기간 동안 품종별 차이가 뚜렷하였다. 재배조건에 따른 콩의 논에서의 지하부의 생육은, V5, R2 및 R5 stage 등 전 생육기간동안 고휴 재배시 지하부의 생육이 평휴재배조건 보다 왕성하였으며, 재배방법에 따른 고휴재배 효과는 나타나지 않았으나, 품종간 차이는 컸다. T/R율은 평휴로 재배할 경우 높았고, 재배방법에 따른 고휴재배 효과는 나타나지 않았으나, 품종간 차이는 인정되었다.
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