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        검색결과 60

        1.
        2022.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Bacterial phytopathogen Pectobacterium causes soft rot disease in several vegetable crops globally, resulting in heavy agricultural losses at both the pre and postharvest stages. The present work was carried out to screen Kimchi cabbage genetic resources conserved at the National Agrobiodiversity Center, Rural Development Administration, Korea, for resistance against the soft rot pathogen Pectobacterium carotovorum subsp. carotovorum KACC 21701 over a period of three years (from 2020 to 2022). Infection of the phytopathogen was carried out at four-leaf stage and for each accession, twenty-five plants per germplasm were infected with KACC 21701. Kimchi cabbage cultivars Wangmatbaechu, Seoulbaechu, and CR Kiyoshi were used as control. Seven-days post-infection, the Disease Index (DI) values were manually recorded from zero to four, zero matched perfectly heathy plants and four completely dead plants. The 682 accessions of Kimchi cabbage exhibited varying degrees of disease resistance to KACC 21701 and thirty accessions, exhibiting a DI≤2, were considered for replication studies. During the replication studies, four landrace germplasms (IT102883, IT120036, IT120044, and IT120048) and one cultivar (IT187919) were confirmed to be moderately susceptible to KACC 21701. Results of the preliminary screening as well as replication studies were documented for the all the 682 germplasms. Addition of such information to the passport data of stored germplasms might serve as potential bio-resource for future breeders and researchers to develop resistant varieties or study the mechanisms involved in resistance of plants to such phytopathogen.
        4,000원
        2.
        2022.10 KCI 등재 구독 인증기관 무료, 개인회원 유료
        EBV-positive mucocutaneous ulcer (EBVMCU) is an indolent, superficial lymphoproliferative disorder that occurs in either iatrogenic or age-associated immunocompromised patients with latent Epstein-Barr virus (EBV) infection. Although EBVMCU is histologically similar with other lymphoproliferative disorders, such as EBV-positive diffuse large B cell lymphoma, the diseases are classified as distinct entities by the World Health Organization with different clinical manifestations, prognosis, and genetic profiles. EBVMCU commonly shows spontaneous regression by conservative management, reduction or cessation of immunosuppressive treatment, but local progression is possible. Complete remission of disease can be achieved with combination of surgical resection, chemotherapy and local radiation therapy. Herein, we report 2 cases of oral superficial lymphoproliferative disorders arising adjacent to the gnathic bone with striking differences in prognosis and bone involvement. One of the cases induced extensive osteomyelitis in the underlying bone. Furthermore, we discussed the differential diagnosis of EBVMCU and reviewed the former literature.
        4,000원
        3.
        2021.10 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The purpose of this study is to first examine the relationship between appearanceenhancing beauty practices and feminism, and secondly, to analyze public images of contemporary women using this paradigm. Through the lens of this relationship, we present a literature review and empirical research focusing on the evolution of public image trends among girl groups, with special attention to the Refund Sisters, a South Korean supergroup currently drawing mainstream attention as female icons. The scope of analysis includes girl groups dating from the 1990’s to the year 2020 and photos of the Refund Sisters. Our results indicate that firstly, free sexual expression is evident based on active use of sexuality; images contain bold demonstrations of females desire, expressions previously considered taboo. Secondly, we note deviations from more standardized female images, unique adornment of outward appearance, and rejection of normative female images through freer forms of self-presentation. Lastly, there is greater cultural and racial diversity, rejection of modern race and gender binaries, and increased representation of queer identities. However, the relationship between appearance-enhancing beauty practices and feminism is sometimes considered paradoxical, with some arguing that beautifying one’s outward appearance is a compulsory strategy and that it should be rejected in order to resist aesthetic pressure.
        4,600원
        5.
        2019.06 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Many transcription factors are involved in directing the growth of porcine oocytes. The localization and expression level of a given transcription factor often differ at each stage of early embryonic growth, which spans from fertilization to the formation of the blastocyst. A hallmark of the blastocyst stage is the separation of the endodermal and mesodermal ectoderm. The embryo's medium and its effects are known to be crucial during early development compared to the other developmental stages, and thus require a lot of caution. Therefore, in many experiments, early development is divided into the quality of oocyte and cumulus cells and used in experiments. We thought that we were also heavily influenced by genetic reasons. Here, we examined the expression patterns of five key transcription factors (CDX2, OCT4, SOX2, NANOG, and E-CADHERIN) during porcine oocyte development whose expression patterns are controversial in the pig to the literature. Antibodies against these transcription factors were used to determine the expression and localization of them during the early development of pig embryos. These results indicate that the expressions of key transcription factors are generally similar in mouse and pig early developing embryos, but NANOG and SOX2 expression appears to show species-specific differences between pig and mouse developing embryos. This work helps us better understand how the expression patterns of transcription factors translate into developmental effects and processes, and how the expression and localization of different transcription factors can crucially impact oocyte growth and downstream developmental processes.
        4,000원
        6.
        2018.11 구독 인증기관·개인회원 무료
        The embryonic genome activation (EGA) is genetically activated states that embryos make the materials such as growth factors for using themselves. EGA is various because they have many materials, different site, different stage, also different species. At this time, transcription factors are expressed. Transcription factors bind to specific DNA region, and regulate the gene expression. Thus, we check the expression of transcription factors, we can know that embryo development is very well or not. The development stages of embryos are basically the stages from fertilization to blastocyst. So, we check the embryos oocyte to blastocyst. In our experiments, we focus the early developmental transcription factors such as Cdx2, Oct4, Sox2, Nanog and E-Cadherin. Above antibody factors showed different expression sites, and there were many differentiated parts from other animal species. In addition, we compared the SCNT and parthenogenetic activation (PA) because these are same methods using electrical activation among the embryo production methods. Our results showed not only similar patterns but also different patterns between pig and mouse. Therefore, we have to investigate that different patterns of transcription factors play a role in pigs, and why occur.
        7.
        2018.11 구독 인증기관·개인회원 무료
        In porcine production, porcine litter size is a quantitative trait and its heritability is especially low. So it is necessary to identify porcine reproductive gene and protein. The establishment of pregnancy requires performance of a receptive endometrium and ovary. The endometrium and ovary go through transformations in response to physiological changes initiated by local factors including ovarian hormones and uterine environment that make it for possible pregnancy. The endometrium and ovary secrete a wide array of growth factors, cytokines and proteins. Based on these background, we analyzed the endometrial tissue protein of porcine and would find out biomarker proteins related to porcine litter size. We sorted the two groups according to litter size of porcine: a small litter size group (SLSG) (n=2) and a large litter size group (LLSG) (n=2). The porcine endometrial tissue and ovary samples were preprocessed for proteomic analysis. In order to comparison, samples of each 2mg endometrium protein and ovary protein were separated form pI and molecular weight in the same conditions by applying a pH 3.0-10.0 IPG gels for the first dimension and then 8-16% SDS-PAGE gel for the second dimension. After proteins were visualized by staining with Commassie brilliant blue (CBB), image analysis was performed with Image Master detect variations in protein spots between large litter size group and small litter size group endometrium. And then differential proteins were identified using MALDI-TOF analysis. The master images of 2-DE gel images obtained from 2mg samples of large litter size group and small litter size group endometrial proteins at pH 3.0-10.0 revealed more than 400 protein spots in pH 3.0-10.0 range. When we analyzed the levels of expression of proteins that protein spots appeared more than 1.5-fold difference in endometrial tissue from porcine. In comparison of SLSG(small litter size group) with LLSG(large litter size group), a total of 18 protein spots differentially expressed on porcine endometrial tissue 2-DE gels, among which 9 spots were up-regulated proteins as retinol dehydrogenase 16-like isoform 1, Acrosin-binding protein, alpha-N-acetylgalactosaminidase. phosphoglycerate kinase 2, Acrosin-binding protein in LLSG. And 8 spots were up-regulated proteins as phosphoglycerate kinase 2, prenylcysteine oxidase in SLSG.
        8.
        2018.11 구독 인증기관·개인회원 무료
        Until now, problems related to shortage of organ for transplantation have been continuing. Pigs are the most suitable animal for xenotransplantation. Although primates are most similar to humans, they are not suitable because they have low productivity. Pigs are more productive than primates, and their organ size and physiological characteristics are similar to humans, with the exception of primates. In this study, we breeding the transgenic minipigs using natural mating to produce transgenic pigs. And, transgenic pigs has transmission rate that follow mendel’s rule. There are 20% hDAF gene, 20% US11 gene and 50% both hDAF and US11 gene in transgenic offsprings. Furthermore, transgenic pigs followed normal litter size, and piglets also has normal sex ratio. To suppress the immune function, experiments were performed using porcine ear fibroblast that transfected with hDAF and US11gene. In Cytotoxicity experiment against human complement, hDAF gene and double transgenic cell with both hDAF and US11 gene showed effect to reduce cytotoxicity rate in all of human complement condition. US11 gene and double transgenic cell were significantly reduce the cytotoxicity ratio in human NK cell. Besides, hDAF gene transgenic cell also reduce immune response in 10:1 concentration of human NK cell. In conclusion, natural mating was efficient method for breeding transgenic pigs. And, hDAF and US11 genes has effect for reduce cytotoxicity against human NK cell and human complement conditions.
        9.
        2018.08 KCI 등재 구독 인증기관 무료, 개인회원 유료
        고품질, 고기능성 조 생산을 위한 파종시기를 설정하고자 조 품종 및 파종시기에 따른 이화학 특성과 항산화 특성을 분석하였다. 황금조의 단백질 함량은 1~3차에서, 삼다메는 1차에서 높았으며, 황금조의 탄수화물 함량은 4~5차에서, 삼다메는 5차에서 높게 나타났다. 황금조의 명도와 황색도는 파종시기가 늦어질수록 증가하는 경향을 보였으며, 삼다메는 감소하는 경향을 보였다. 적색도는 전반적으로 파종시기가 늦어질수록 감소하는 경향을 보였다. 조의 팽윤력은 대체적으로 파종시기가 늦어질수록 증가하는 경향을 보였다. 품종 및 파종시기에 따른 조의 총 폴리페놀 함량은 황금조와 삼다메에서 각각 298.68~315.13 및 288.84~297.73 mg GAE/100 g으로 황금조는 파종시기가 늦어질수록 감소하는 경향을 보였고, 삼다메는 2~3차 파종에서 높게 나타났다. 전반적으로 총 폴리페놀 함량은 1~3차 파종 시료에서 유의적으로 높은 함량을 보였다. 품종 및 파종시기에 따른 조의 DPPH 라디칼 소거활성은 황금조와 삼다메에서 각각 104.70~126.89 및 111.75~136.92 mg TE/100 g, ABTS 라디칼 소거활성은 각각 88.69~114.64 및 69.80~100.09 mg TE/100 g으로 유의적인 차이를 보였다. 이상의 결과, 품종과 재배시기에 따라 폴리페놀 성분의 함량과 라디칼 소거활성이 차이를 보이는 것으로 나타나, 조의 품종과 재배지역을 고려하여 적정 파종시기를 설정할 필요가 있을 것으로 보인다.
        4,000원
        10.
        2017.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        본 연구는 밀폐형 식물생산 시스템에서 다양한 형광등 종류에 따른 시금치 ‘수시로’의 생육과 기능성물질 함량에 미치는 영향을 구명하기 위해 수행되었다. 종자는 128구 플러그 트레이에 암면을 이용하여 파종되었다. 시금치 묘는 재순환 담액식 수경재배 시스템을 이용하여 EC 1.5dS·m-1, pH 6.5의 밀폐형 식물생산 시스템에 정식되었다. 묘는 3가지 종류의 형광등 #S(NBFHF 32S8EX-D, CH LIGHTING Co. Ltd., China), #O( FHF32SSEX-D, Osram Co. Ltd., Germany), #P(FLR32SS EX-D, Philips Co. Ltd., The Netherlands)에 광도 150μmol·m-2·s-1 PPFD와 광주기 14/10 (명기/암기)으로 설정했다. 정식 후 재배환경은 온도 25±1oC와 상대습도 60±10% 였다. 정식 후 6주간 각 처리마다 30개체를 재배하였고, 생육 및 기능성 물질 함량을 3주째와 6주째 측정했다. 정식 후 3주째, #O 형광등에서 다른 처리구에 비해 초장과 엽폭이 유의적으로 컸다. 그러나 지하부의 생체중과 건물중은 #P 형광등에서 가장 높았다. 또한 총페놀 함량은 #P 형광등에서 유의적으로 가장 높았다. 정식 후 6주째, #O 형광등에서 초장, 지상부의 생체중 및 건물중에서 시금치의 생육이 향상되는 효과를 보였다. 총페놀 함량도 #O 형광 등에서 다른 처리구에 비해 유의적으로 증가하였다. 그러나 항산화 활성은 모든 처리구에서 유의적인 차이를 나타내지 않았다. 따라서 이러한 결과는 밀폐형 식물생산 시스템에서 #O 형광등 처리가 시금치의 생육과 기능성물질 함량 축적에 효과적인 것으로 나타났다.
        4,000원
        11.
        2017.09 구독 인증기관 무료, 개인회원 유료
        Xenotransplantation is proposed as a solution to the problem of organ shortage. However, transplantation of xenogeneic organs induces an antigen-antibody reaction in α-1,3-gal structure that are not present in humans and primates, and thus complement is also activated and organs die within minutes or hours. In this study, we used FasL gene, which is involved in the immune response of NK cell, and US11, which suppresses MHC Class I cell membrane surface expression, to inhibit cell mediated rejection in the interspecific immunity rejection, and also hDAF(CD55) was introduced to confirm the response to C3 complement. These genes were tranfeced into Korean native pig fetal fibroblasts using pCAGGS vector. And cytotoxicity of NK cell and human complement was confirmed in each cell line. The US11 inhibited the cytotoxicity of NK cell and, in addition, the simultaneous expression of US11 and Fas ligand showed excellent suppress to T-lymphocyte cytotoxicity, hDAF showed weak resistance to cytotoxicity of natural killer cell but not in CD8+ CTLs. Cytotoxicity study with human complement showed that hDAF was effective for reducing complement reaction. In this studies have demonstrated that each gene is effective in reducing immune rejection.
        4,000원
        12.
        2017.05 구독 인증기관·개인회원 무료
        Embryo development is very important in reproductive physiology of domestic animal experiments. Therefore, in the above experiment, we want to provide a lot of important information with regard to fertilization breeding by looking at the expression of transcription factor by early embryo development. It is known that mice affect early embryonic development of many transcription factors, many experiments are underway. Different types of mammals showed different expression patterns, thus, we used pigs, which are known to be the most similar to humans, to observe the expression of transcription factors in early embryonic development. Transcription factors were observed using CDX2, OCT4 and E-CADHERIN. CDX2 was expressed in 2 cells, OCT4 and E-CADHERIN were expressed in blastocyst. OCT4 was expressed specifically in ICM (inner cell mass) in blastocyst, and E-CADHERIN was expressed in cell wall and junction of blastocyst. These results show that CDX2, OCT4 and E-CADHERIN play an important role in early embryonic development in pigs.
        13.
        2017.05 구독 인증기관·개인회원 무료
        Porcine litter size is a quantitative trait and its heritability is especially low. So it is necessary to identify porcine reproductive gene and protein. The establishment of pregnancy requires performance of a receptive endometrium. We analyzed the endometrial tissue protein of porcine and would find out biomarker proteins related to porcine litter size. We sorted the two groups according to litter size of porcine: a small litter size group (SLSG) (n=2) and a large litter size group (LLSG) (n=2). The porcine endometrial tissue samples were analyzed separately using 2-dimensional electrophoresis (2-DE) within the isoelectric point ranges of 3.0 to 10.0, and then differential proteins were identified using MALDI-TOF analysis. In comparison of SLSG(small litter size group) with LLSG(large litter size group), a total of 9 protein spots differentially expressed on porcine endometrial tissue 2-DE gels, among which 5 spots were up-regulated proteins as retinol dehydrogenase 16-like isoform 1, Acrosin-binding protein, alpha-N-acetylgalactosaminidase. phosphoglycerate kinase 2, Acrosin-binding protein in LLSG. And 4 spots were up-regulated proteins as phosphoglycerate kinase 2, prenylcysteine oxidase in SLSG.
        14.
        2016.10 구독 인증기관·개인회원 무료
        α-solanine is toxic to human health by disturbing digestive and central nervous systems. However, little information has been focused on investigated with respect to α-solanine influence in mammal oocyte maturation and quality. In this study, we investigated the effects of α-solanine on oocyte maturation, quality and possible molecular mechanisms in a pig model. Porcine Cumulus-oocyte complexes (COCs) were treated with increasing concentration (0, 1, 10, 20, 50 μM) of α-solanine subjected to further in vitro maturation culture. The result showed that α-solanine significantly inhibited cumulus cells expansion and increased oocyte death rates when the concentration of α-solanine more than 10 μM. After cell cycle and cytoskeleton analysis, the results showed that α-solanine (10 μM) disturbed meiotic resumption, increased abnormal spindle formation and cortical granules (CGs) distribution rates when compared with the untreated group. α-solanine (10 μM) triggered autophagy by increasing the expression of autophagy-related genes (LC3, ATG7, LAMP2) and accumulation of LC3-specific puncta (an autophagy maker). TUNEL staining assay showed that α-solanine significantly increased apoptosis in porcine oocytes confirmed by up-regulated the levels of BAX and CAPS3 genes. Further study revealed that exposure α-solanine (10 μM) to porcine oocytes induced ROS generation, reduced mitochondrial membrane potential. In addition, our results suggested that α-solanine (10 μM) significantly increased the levels of H3K36me3 and H3K27me3 in porcine oocytes. Taken together, these data indicated that α-solanine toxic impaired oocyte maturation and quality by inhibited cumulus cells expansion, increased abnormal spindle and CGs distribution rates, triggered autophagy/apoptosis occur, accumulated ROS, decreased mitochondrial membrane potential, and changed epigenetic modifications.
        15.
        2016.10 구독 인증기관·개인회원 무료
        In pig, more than half of the recovered cumulus cell-oocyte complexes (COCs) have one or two layers of cumulus cells and are considered morphologically poor. If we could take full advantage of these poor quality COCs, we could potentially improve the efficiency of in vitro embryo production. During in vitro maturation, although some maturation factors are transmitted bidirectionally between the oocyte and cumulus cells of the same COC, transmission also occurs between different COCs. We hypothesized that morphologically poor COCs fail to undergo complete oocyte maturation due to their insufficient secretion of maturation factors. Here, we investigated whether co-culture with morphologically good COCs (having three or more layers of cumulus cells) could improve the maturation and utilization rates of morphologically poor COCs. Our results revealed that the oocyte maturation rate, glutathione level, embryo development capacity, blastocyst quality, and cumulus cell gene expression levels of BCL-2 and PCNA were similar in the co-culture and good quality-groups, and that these levels were all significantly higher than those in the poor quality-group. Our results strongly suggest that the co-culture strategy greatly improved the utilization rate of morphologically poor COCs without reducing their capacity for maturation and subsequent development.
        16.
        2016.10 구독 인증기관·개인회원 무료
        Early pregnancy results in th production of various signal molecules such as steroids, prostaglandins, and many protein factors. The proteins especially produced by the placenta have been used to detect pregnancy for many years in other species. More recently, pregnancy-specific protein B, which is a placental glycoprotein can be measured by RIA or proteomic methods in serum of pregnant cow. And 2D Fluorescence difference gel electrophoresis (DIGE) is an emerging technique for comparative proteomics, which improves the reproducibility and reliability of differential protein expression analysis between samples. For this reason, we are analyzed serum of bovine. The purpose of this study was to apply DIGE technique for identification of bovine pregnancy-specific proteins using bovine pregnant and non-pregnant serum samples. Serums of 2 pregnant Holstein dairy cattle at day 21 after AI and those of 2 non-pregnant were used in this study. The molecular weight and charge matched cyanine dyes enable pre-electrophoretic labeling of non-pregnancy and pregnant serum proteins which are then mixed and labeled with Cy2 were used as an internal standard. Two pools of proteins are labeled with Cy3 and Cy5 fluorescent dyes, respectively. Labeled proteins with Cy2, Cy3 and Cy5 mixed together and separated in same gel and then were detected by fluorescence image analyzer. The 2D DIGE analysis using fluorescence CyDye flour showed higher sensitivity and better reproducible results than conventional 2D gel electrophoresis. Approximately 1,500 protein spots were detected by 2D DIGE. The differentially expressed proteins were identified by MALDI-TOF Mass spectrometer. Total 16 protein spots differentially expressed in the pregnant serum were detected, among which 7 spots were up-regulated proteins identified as conglutinin precursor, modified bovine fibrinogen, IgG1 etc, and 6 spots were down-regulated proteins identified as hemoglobin, complement component 3, bovine fibrinogen, IgG2a etc. These results indicated that DIGE system could be advantageous for the analysis of serum proteomics diversified by physiological conditions.
        17.
        2016.03 KCI 등재 구독 인증기관 무료, 개인회원 유료
        본 연구는 의료살균기술의 하나인 전극을 이용한 전기 충격 살균법을 순환식 수경재배의 배양액 재순환을 위한 배액 살균기술로 활용하고, 배액의 전기살균소독시스템을 구축하고자 할 때, 살균소독 효과가 높으며, 친환경적이고 경제적인 배양액 살균소독기술의 개발 및 전기살균소독시스템에서 사용될 전극의 최적 조건을 구명하고 전기소독의 가능성을 확인하기 위해 수행되었다. 전기살 균소독시스템 구축 시 적정 전극소재 구명을 위해 금속 전도체의 특성 조사 및 전기실험을 실시하여 배액의 pH 와 EC변화유무와 침전물 발생여부 및 배액의 원소변화 유무를 분석하였다. 새로이 개발된 전기살균소독시스템 구축 시 가장 적합한 금속 전도체 전극소재로는 전기전도도가 높고, 저항이 적으며, 소재의 수급이 용이하고, 가격이 저렴한 스테인리스 스틸임을 확인하였으며. 또한 스테인리스 스틸을 전극으로 사용하였을 때, 전기를 공급하기 전과 24V 이내의 전기를 공급한 후의 배양액내 원소변화는 거의 없는 것으로 분석되었다. 전극의 두께 보다는 넓이가 증가함에 따라 전류의 양이 증가하였으며 전극의 거리가 멀수록 목표 전류량에 도달하는 시간이 증가하였다. 적합한 전류량에 따른 주요 병원균의 살균 력을 조사한 결과 대표적 세균병인 풋마름병의 원인균인 Ralstonia solanacearum가 전류 15V-3A 170초에서 97% 가 사멸되는 것을 확인하였으며 곰팡이병인 Fusarium oxysporum은 24V-10A에서 98%의 살균력을 보였다.
        4,000원
        18.
        2015.05 구독 인증기관 무료, 개인회원 유료
        Pigs are considered an ideal source of human disease model due to their physiological similarities to humans. However, the low efficiency of in vitro embryo production (IVP) is still a major barrier in the production of pig offspring with gene manipulation. Despite ongoing advances in the associated technologies, the developmental capacity of IVP pig embryos is still lower than that of their in vivo counterparts, as well as IVP embryos of other species (e.g., cattle and mice). The efficiency of IVP can be influenced by many factors that affect various critical steps in the process. The previous relevant reviews have focused on the in vitro maturation system, in vitro culture conditions, in vitro fertilization medium, issues with polyspermy, the utilized technologies, etc. In this review, we concentrate on factors that have not been fully detailed in prior reviews, such as the oocyte morphology, oocyte recovery methods, denuding procedures, first polar body morphology and embryo quality.
        4,000원
        19.
        2015.03 KCI 등재 구독 인증기관 무료, 개인회원 유료
        본 실험은 광파장 선택형 차광제와 이류체 포그시스템을 이용하여 고온기 시설내 고온과 건조문제를 해소할 수 있는 적정 냉각법을 구명하기 위하여 수행되었다. 실험처리는 차광제와 이류체 포그시스템을 설치하지 않은 대조구(Non), 이류체 포그시스템만 설치하여 작동한 처리(Fog), 차광제만 도포한 처리(Coat), 외부에 차광제를 도포하고 내부에 이류체 포그시스템을 작동한 처리 (F&C) 등이었다. 유입 일사량(열량)은 Non, Fog, Coat, F&C 순으로 많았다. 시설내 기온을 낮추는 방법으로는 이류체 포그시스템이 더 효과적이었다. 또한 이류체 포그시스템을 처리하면 상대습도도 적절히 조절할 수 있었다. 작물의 품온은 다른 처리구에 비해 대조구에서 약 6oC 이상 높았다. 연구결과, 고온기 시설내 광, 온도, 상 대습도 환경조절에 가장 효과적인 방법은 이류체 포그시 스템과 차광제 도포를 함께 하는 것이나, 효과 및 경제 성을 함께 고려한다면 이류체 포그시스템을 활용하는 것이 가장 좋은 것으로 판단된다. 그러나 단동하우스의 경우에는 구조적 제약으로 이류체 포그시스템의 설치보다 광선 선택형 차광제를 도포하는 것이 더 좋은 방법으로 사료된다.
        4,000원
        20.
        2014.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        본 실험은 저온기 토마토 재배시 토마토의 생육과 수 확량에 최적의 측지관리방법을 구명하고자 수행하였다. 방울토마토인 유니콘(몬산토 코리아, 한국)을 실험에 사 용하였다. 배지는 코이어 자루배지를 사용하였다. 모든 측지를 제거하고 모든 화방의 상부 잎 1매까지 제거한 처리(UP-FL), 측지를 전부 제거하고 착과한 화방의 상부 잎 1매까지 제거한 처리(UP-FR), 모든 측지를 제거한 처리(AS-All), 화방 하부 첫 번째 측지의 잎 2매를 유지 하는 처리(AS-Part) 등 모두 4가지 방법으로 처리했다. 이상엽의 발생은 UP-FL, UP-FR, AS-All, AS-Part 순으 로 많았다. 즉, 주지와 측지의 잎을 많이 제거한 처리일 수록 이상엽의 발생이 많았다. 그리고 이상엽은 영양생 장과 생식생장이 균형을 균형을 이루는 2~3화방 개화기 이후에는 해소되는 것으로 나타났다. 5화방까지의 수확 량은 처리간 차이가 없었다. 따라서 저온기 토마토 재배 시 생육초기에는 과도한 측지제거 및 적엽은 지양하는 것이 좋은 것으로 사료된다.
        4,000원
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