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        검색결과 15

        1.
        2015.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        복숭아 네 품종 ‘오도로끼’, ‘가납암백도’, ‘진미’, ‘장호원황 도’ 신초의 저온순화 및 탈순화 동안 시기별 내한성 변화는 전해질 누출률을 분석하여 나타냈다. 또한 내한성 결정 요인 을 분석하고자 SDS-PAGE를 이용하여 dehydrin 함량 변화를 확인하였으며, 그와 관련된 유전자 발현 분석은 quantitative real-time RT-PCR을 이용하여 수행하였다. 네 품종의 내한성 은 2012년 12월까지 꾸준히 증가하였으며 그 후 2013년 4월 까지 감소하였다. PpDhn1 유전자가 인코딩하는 60kDa의 dehydrin 단백질은 탈순화기(2013년 3-4월)에 비하여 저온순화 기(2012년11월-2013년 1월) 동안 높은 축적이 확인되었다. PpDhn1 유전자와 PpDhn3 유전자 발현양상은 복숭아 네 품 종에서 내한성 변화와 평행하게 나타난 반면, PpDhn2 유전자 는 뚜렷한 시기별 패턴을 나타내지 않았다.
        4,000원
        2.
        2012.10 구독 인증기관·개인회원 무료
        노린재류는 과수에서 가장 문제시되는 해충으로 알려져 있으며, 최근 복숭아 과원에서도 갈색날개노린재, 썩덩나무노린재, 톱다리개미허리노린재, 장님노린재류, 풀색노린재류 등 여러 종의 노린재류가 지속적으로 많은 피해를 끼치고 있다. 페로몬을 이용하여 청도, 경산, 영천등 경북지역에서 톱다리개미허리노린재의 예찰상황을 조사하였는데, 해에 따라 발생시기와 발생밀도의 차이를 보였다. 2010년도에는 초발시기가 5월상순경이었고, 후기에는 7월 중순부터 크게 증가하였으며, 2011년도의 경우 초발시기가 4월 중순경이었으며, 6월 이후에는 감소하다가 중만생종 수확기인 8월 이후에 크게 증가하였다. 2012년도에는 4월중순경부터 크게 증가하여 4월하순부터 5월상순까지 80~100마리/트랩 정도로 밀도가 높았으며, 8월 이후부터 9월중순경까지 밀도가 크게 증가하였다. 노린재류의 피해는 잎의 경우 4월 하순부터 발생하여 5월 중순까지 계속 증가하였으며, 장마기에 감소하다가 8월 상순경에 다시 증가하였고, 과실에서는 5월 중순부터 6월 중순까지와 8월 상순~중순경에 피해가 심하였다. 복숭아에는 노린재류에 대한 등록약제가 없어 농약직권 등록시험을 수행한 결과 디노테퓨란・에토펜프록스수화제 등 5종의 약제에서 방제 효과가 인정되었다. 한편 약제살포 시간대별 노린재류의 방제효과를 검토하기 위해 오전 7시부터 오후 7시까지 4가지로 구분하여 약제를 처리한 결과 오전 7시 처리구에서 가장 방제효과가 높았다.
        3.
        2011.05 구독 인증기관·개인회원 무료
        경북지역의 복숭아 주산지인 청도군, 영천시, 경산시 지역을 대상으로 2008 년~2010년 동안 복숭아순나방 성페로몬을 이용하여 예찰하고, 이에 근거하여 복 숭아순나방 피해 과원에 대해 교미교란제의 효과를 검토하였다. 페로몬트랩의 조사는 10일간격으로 하였으며, 설치된 루어의 교체는 약 6주 간 격으로 하였다. 복숭아순나방 방제를 위한 교미교란제의 설치는 도포형을 사용하 였으며 도포량은 120g/10a을 도포하였으며, 과원내부에 비해 가장자리에 20% 정 도를 많게 하였다. 복숭아 과원의 복숭아순나방 1화기 평균 발생최성기는 2010년에 5월상순으 로 2008년보다 10일정도 2009에 비해 20일정도 각각 늦어졌고, 발생밀도도 해에 따라 편차를 보였다. 교미교란제를 활용한 복숭아순나방 방제효과의 경우 성페로몬 예찰을 통한 성충유살수 조사에서는 교미교란제 처리 효과가 뚜렷하였으나, 피해순율과 피 해과율 조사에서는 교미교란제의 처리방식에 따라 차이를 보였다. 주위에 복 숭아 및 사과 등 복숭아순나방이 발생하는 과원이 인접해있는 곳에서는 효과 가 떨어졌으며, 독립된 과원이나 교미교란제를 대면적에 처리했을 경우 피해 순률이 3% 정도, 피해과율이 0.4% 정도로 방제효과가 높았다. 살충제 약제살포 횟수에서는 교미교란제 처리구에서 살충제 살포 횟수가 2 회정도 절감되었다.
        4.
        1998.02 KCI 등재 구독 인증기관 무료, 개인회원 유료
        세균을 이용한 복귀돌연변이 시험계는 Salmonella typhimurium 히스티딘 요구성 변이주를 이용하여 염기대치환(base change)의 돌연변이를 검출하는 S. typhimurium TA100, TA1535와 frameshift형의 돌연변이를 검출하는 S. typhimurium TA98, TA-1537로 구성되어 있으며, 화학물질의 변이원성에 의하여 히스티딘 비요구성으로 복귀하는 돌연변이를 검토하는 시험계로 널리 이용되고 있다^13). 시험결과, Yellow pigment는 S. typhimurium에 대한 독성도 나타나지 않았으며, 배지 1ml당 200㎍ 이하의 모든 농도에서 S-9 Mix(대사활성계)의 유무에 관계없이 S. typhimurium 모든 변이주에서 히스티딘 요구성에 대한 복귀돌연변이를 유발하지 않는 물질로 판단되었다. 이상의 결과로부터 치자황색색소는 S. typhimurium을 이용한 복귀돌연변이시험에서 유전독성이 없는 물질로 사료되었다.
        4,000원
        5.
        2018.12 KCI 등재 서비스 종료(열람 제한)
        Background: The growth process of ginseng seedlings is very important in producing good quality ginseng. This study was carried out to investigate the effects of different microclimates on the growth characteristics of ginseng seedlings in a multi-layer bed facility. Methods and Results: Ginseng seedlings were cultivated in a three-layer bed facility. The air temperatures on the first and second floors were similar, while that on the third floor was about 1 - 4℃ higher than that on the other floors. The vapor pressure deficit (VPD) was higher inside than on the outside of the facility, and that on third floor was the highest in the multi-layer bed system. The photosynthetic rate, chlorophyll fluorescence, and growth characteristics of ginseng seedlings did not significantly differ among the three floors. The yield of ginseng seedlings was the highest at 721 g/1.62 ㎡ on the first floor Conclusions: It was found that microclimate plays an important role in growing ginseng seedlings in multi-layer bed facilities, and therefore proper environmental control is important. In addition, producing ginseng seedlings using multi-layer bed facilities is a technology that is expected to provide a way to overcome climate change and stabilize ginseng production.
        6.
        2018.10 서비스 종료(열람 제한)
        Background : Ginseng (Panax ginseng C. A. Meyer) is a multi-year-cultivated plant that causes many insects and disease damage during the growing season. The Ginseng Rain-sheltered Shade House is one of the efficient cultivation techniques as reducing the damages caused by natural disaster such as blight, high temperature & humidity, dry, and heavy rain & snow. This study was conducted to investigate the growth characteristics of 4-years-old ginseng using rain-sheltered shade house suitable shading materials for the Gyeongsangbuk-do. Methods and Results : The rain-sheltered shade house shading materials were PE film with layered polyethylene net 90%, Light diffusion film with layered polyethylene net 75%, blue-white duplicated film. In order to determine proper shading materials of the rain-sheltered shade house, ginseng growth characteristics such as plant length, stem diameter, leaf length, root length and root diameter were investigated at 4-years-old ginseng. As a result, the evaluations of aerial part growth by measurements were good in the following order: PE film + polyethylene net 90%, Blue-white duplicated film and light diffusion film + polyethylene net 75%. The evaluations of root weight by measurements were heavy in the following order: Blue-white duplicated film, PE film + polyethylene net 90% and light diffusion film + polyethylene net 75%. The net photosynthetic rate was higher in blue-white duplicated film than other shading materials treatments during growth season including summer high-temperature period. Conclusion : In the 4-years-old ginseng cultivation in Gyeongsangbuk-do using the rain-sheltered shade house, aerial part growth in PE film + polyethylene net 90% was better than other shading materials. In addition, root weight in Blue-white duplicated film was heavier than other shading materials. It will be possible to know which shading material is the most suitable for Gyeongsangbuk-do area after further growth.
        7.
        2018.10 서비스 종료(열람 제한)
        Background : Foliar fertilizer materials are used in the field of ginseng farming to enhance the growth of ginseng. The law for ginseng industry prohibits the use of chemical fertilizer as a material for growing ginseng, but in recent years, various organic materials derived from natural materials have been produced and used in farming sites. The purpose of this study was to investigate the effects of foliar fertilizer on the growth and soil properties of ginseng during continuous use. Methods and Results : For the test materials, native seedlings were used and the amino acid solution, liquid silicate, microbial liquid and fermentation enzyme were treated from 2 to 5– year-old ginseng after transplantation. The test plots were carried out to 3 repetitions by randomized block design. The area of one plot was 3.24 ㎡. The treatments were foliar application three times at intervals of 10 days from the late of May when leaf development was completed. The chemical properties of each foliar fertilizer pH was the highest at 9.63 for liquid silicate and lowest at 5.85 for amino acids. Ammonium nitrate had the highest amino acid content (56 ㎎/ℓ). Phosphorus was the highest with 113.7 ㎎/ℓ of fermentation enzyme. As a result of foliar fertilization for 4-years up to 5-years of ginseng, the pH was similar in soil chemical properties. EC and nitrate nitrogen contents tended to be higher in foliar application than in non-treatment. In the photosynthesis of ginseng, fermentation enzyme and microbial treatment tended to be high. Thickness of ginseng leaf was the thickest in microbial treatment. Microbial treatment was the highest in the underground part. Soil chemical properties were also affected but there was no significant change to inhibit the growth of ginseng. Conclusion : The treatments of the foliar fertilizer were more effective than the no treatment on the growth of ginseng. Among the foliar fertilizers distributed on the market, those derived from natural products can be used in ginseng cultivation.
        8.
        2018.10 서비스 종료(열람 제한)
        Background : The chlorophyll fluorescence imaging as non-destructive imaging methods have been used widely for efficiently early detection of plant responses to various stresses. The information from images acquired from different condition has the potential to generate specific signatures for particular stresses. Light-energy absorbed by plants is distributed over three competing processes: photosynthesis, thermal dissipation and chlorophyll fluorescence emission. An increase in Chl-FI thus implies a decrease in photosynthesis. The stresses in growing stage will change the efficacy of photosynthesis. As a example, Chl-FI of plant infections was carried out previously for a number of different viral and fungal plant–pathogen systems. Therefore, image can be used for differentiation of various stress index. Methods and results : 2-years-old ginseng plants were transplanted to plastic pots and each stress factors were treated. The stress factors used in this study were high temperature, low temperature, fungicide, and fungal pathogen. High temperature stress was induced by placing pots inside incubator adjusted at 35℃. For treatment of low temperature stress, ginseng plants were stored at 5℃ refrigerator for 5 minutes. Pathogen stress was carried to inoculate mycelial disk. Alternaria panax was inoculated potato-dextrose-medium and cultured for 10 days at 25℃. Mycelial disk obtained from cultured plate were placed on the one leaf of ginseng. Azoxystrobin wp was diluted 500, 1,000 times in tap water and sprayed to ginseng plants. Chlorophyll fluorescence image was acquired from each plant that stress treated and analyzed with sigma plot software. Conclusion : Important value, Fv/Fm (maximum efficiency of photosystem II), Fp (peak fluorescence during the initial phase of the operating efficiency of the Kautsky effect), NPQ-lss (steady-state, non-photochemical), etc., were significantly changed by variable stress index. But it was impossible to differentiate kind of stress by acquired value.
        9.
        2018.05 서비스 종료(열람 제한)
        Background : Multi-stage system were used for development of stable ginseng seedling production. Bed-soil for the production of ginseng seedling in the multi-stage was similar to the conventional bed-soil but the weight of the bed-soil was high and the efficiency of operation in the multi-stage was lowered. In this study, the yield and quality of ginseng seedling was investigated by commercial lightweight bed-soil in the multi-stage facilities, and the possibility of application of lightweight bed-soil. Methods and Results : This study was carried out by a 3-stage cultivation bed using a 50 ㎜ sandwich panel in a house shaded with 85% light-shielding net. The width of the cultivating bed was 90 ㎝, the height was 30 ㎝, and the height of each stage was 50 ㎝. In the first and second stages, the amount of light was insufficient, so two rows of fluorescent lamps were installed and the third stage was used natural light. Ginseng seeds were sown on the cultivating bed in November 2016, and ginseng seeds (native species) were sown with a density of 3 × 3 ㎝. The chemical properties of lightweight bed-soil were pH 5.11, and EC 0.76 dS/m. It was suitable for ginseng seedling cultivation. The bulk density was 0.21 Mg/㎥. Among the growth characteristics of the ginseng seedlings, the root length was the longest as 17.0 ㎝ in the conventional cultivation, and the second stage was the longest at 14.8 ㎝ in the multi-stage facility. The root diameter in the multi-stage system was 0.2 - 0.4 ㎜ thicker than the conventional one. Root weights of lightweight bed-soil were similar to those of conventional cultivation. The yield of ginseng seedlings in the 1 st, 2 nd and 3 rd stage was 721.3 g, 692.0 g, and 394.7 g/1.62 ㎡ respectively. Conclusion : In the production of ginseng seedling using multi-stage facilities, the commercial bed-soil was better than the conventional bed-soil (light, workability). The differences in yields in the multi-stage facilities can be overcome if the growth management such as moisture management is more systematic. If we develop the technology to reuse the bed-soil after harvesting the ginseng seedling, it will be economical and able to supply to farmers.
        14.
        2003.12 KCI 등재 SCOPUS 서비스 종료(열람 제한)
        경북지방에서 많이 생산되고 있는 생과용 복숭아를 이용하여 수확후 오존수 침지처리가 복숭아 품질신선도에 미치는 영향에 대하여 분석한 결과 가용성고형물은 처리후 일수가 경과할수록 조금씩 증가하는 경향을 보였으며, 처리후 15일째는 무처리구와 오존수처리구에서 유의적으로 차이가 나타나지 않았으며, 산도의 변화에서는 무처리구에 비해 오존수 침지처리가 저장기간이 경과할수록 낮아지는 경향을 보였는데, 오존수처리후 10일째와 15일깨 모두 처리구보다 낮게 나타
        15.
        2000.03 KCI 등재 SCOPUS 서비스 종료(열람 제한)
        The study was conducted to investigate the characteristics of peach vinegar by parallel-complex fermentations. The vinegars prepared by using Changbnag-Chosang and Yumung peach cultivars added with 7, 10, and 13% sugaring concentrations were examined. The rate of increase in alcohol degree and titratable acidity, and that of decrease in soluble solids showed higher at Yumyung peach than at Changbang-chosang. Alcohol and acetic acid fermentation by paralle-complex fermentation were performed better in Yumyung peach than Changbang -chosang. but the fermentation of Yumyung showed active alcohol fermentation in the early stage, and active acetic acetic acid fermentation in the late stage. Quality of the vinegar prepared with Yumyung peach was better than that of Changbang-chosang, which were evaluated by acetic acid contents , peach taste and odor in the vinegar, and overall taste. The fermentation was accelerated with an increase in sugaring , concentrating but overall taste was best in 10 % sugaring.