• Research Article

    Effect of Napa Cabbage (Brassica campestris var. Pekinensis) Cropping Systems on Soil Physiochemical Properties, Yield and Quality in Alpine Area of South Korea

    한국 고랭지 배추 작부체계에 따른 토양, 배추 생산성 및 성분 특성 비교

    Gye Ryeong Bak and Jeong Tae Lee

    백계령, 이정태

    Napa cabbage (Brassica campestris var. Pekinensis) is the main material of Kimchi so that important crop in South Korea. There are two ... + READ MORE
    Napa cabbage (Brassica campestris var. Pekinensis) is the main material of Kimchi so that important crop in South Korea. There are two typical napa cabbage cropping systems in the alpine area. One is cultivating napa cabbage annually while another is cultivating napa cabbage and potato biennially. In this research, we evaluated soil physiochemical properties, yield, and mineral contents of napa cabbage depending on two cropping systems. As a result, organic matter, available P2O5, exchangeable K+ was decreased after six-years of cultivation on both cropping systems. However, soil pH was only decreased in a continuous napa cabbage cropping system. Soil porosity is also decreased in both cropping systems on topsoil while is increased in rotation with potato on subsoil. The rotation system showed a significantly higher yield with a higher value of leaf and napa cabbage size than the continuous cropping system. Total nitrogen, Ca2+, and Ma2+ were increased and total carbon and phosphate decreased in both cropping systems after six-years. Especially, total nitrogen and Mg2+ were significantly higher in the continuous system while Ca2+ was higher in the rotation system. In conclusion, the cropping system influences soil physiochemical properties and plant production in an agricultural field. - COLLAPSE
    August 2021
  • Research Article

    Effect of the Density of Heterodera glycines on Soybean Yield

    콩씨스트선충(Heterodera glycines)의 밀도가 콩 수량에 미치는 영향

    Heonil Kang, Byeongyong Park, Sekeun Park, Eunwha Kim, Eunhyeong Park and Hyoung-Rai Ko

    강헌일, 박병용, 박세근, 김은화, 박은형, 고형래

    This study was conducted to investigate the yield loss of soybean by initial density of Heterodera glycines in soil. A soybean cultivar ... + READ MORE
    This study was conducted to investigate the yield loss of soybean by initial density of Heterodera glycines in soil. A soybean cultivar named ‘Cheongja5ho’ was cultivated as test material in Dangjin city, Chungcheongnam-do, Korea. Each seed was planted with distance of 25 cm in 35 plots by initial density of egg of the cyst nematode on June 21st, and allowed to harvest on November 12st in 2019. As a results, the yield of soybean decreased sharply when as the initial density of eggs of cyst nematode increased. The initial density of eggs in soil affected largely on the decreased yields of the soybean by more than 20% in above 2,000 eggs, and 30% in above 6,000 eggs of the cyst. Beyond the 6,000 eggs, the yield loss was more slowly decreased compared with the above cases. Eggs of H. glycines are widely distributed in Korea, resulting in the serious soybean yield loss by H. glycines. - COLLAPSE
    August 2021
  • Research Article

    Growth and Fruit Characteristics of ‘Duke’ Highbush Blueberry by Mixture of Different Organic Matters in Soil

    상토 중 유기자재에 따른 하이부쉬블루베리 ‘Duke’ 품종의 수체 생육 및 과실 특성

    Su Jin Kim, Dong Hoon Lee, Youn Young Hur, Dong Jun Im and Seo Jun Park

    김수진, 이동훈, 허윤영, 임동준, 박서준

    Growth and fruit characteristics of ‘Duke’ highbush blueberry by mixture of different organic matters in soil were investigated. The soil acidity was ... + READ MORE
    Growth and fruit characteristics of ‘Duke’ highbush blueberry by mixture of different organic matters in soil were investigated. The soil acidity was 4.2 to 4.8, sawdust treatment was the highest, and peat soil and peatmoss treatments were similar. The organic matter content of the soil was 2.5% for sawdust and 4.1% for soil with peatmoss and peat soil. The soil hardness of all treatment was found to be about 1 ~ 5 kgf ㎝-2 which was suitable for growing crops. The number of suckers and main stems were high in the order of peat soil, peatmoss, sawdust treatment. In addition, the blueberry plants in the peatmoss and peat soil treatments had thicker and longer suckers and more shoots than those in the sawdust treatment. Among the characteristics of fruit, there was no statistical difference between the organic materials treatment in weight, diameter, length, and hardness of fruit. However, the total soluble solid and fruit yield were high in the order of peat soil, peatmoss, sawdust treatment. Therefore, as a result of comprehensively reviewing the characteristics of growth and fruits according to the soil environment, it was determined that peatmoss could be replaced with peat soil for stable production in domestic blueberry cultivation. - COLLAPSE
    August 2021
  • Research Article

    Several Factors Affecting Growth of Veronica rotunda var. subintegra (Nakai) T. Yamaz. Stem Cutting

    산꼬리풀 삽수의 생장에 미치는 몇 가지 요인

    Hye Jin Oh, Seung Youn Lee, Un Seop Shin, Hee Chae Kim and Sang Yong Kim

    오혜진, 이승연, 신운섭, 김희채, 김상용

    Veronica rotunda var. subintegra (Nakai) T. Yamaz. is perennial herb belonging to the family Scrophulariaceae, native to Korea. Plant growth regulators, cutting ... + READ MORE
    Veronica rotunda var. subintegra (Nakai) T. Yamaz. is perennial herb belonging to the family Scrophulariaceae, native to Korea. Plant growth regulators, cutting mediums, cutting position, and leaf size were examined to investigate the requirements for cutting propagation of V. rotunda var. subintegra. This study was conducted over a period of 6 weeks from March to May 2017 in the Division of Plant Resources, Korea National Arboretum. For all treatments, survival and rooting percentage was 100%. In PGRs experiment, the number of roots and shoot length treated with 100 ㎎/L IBA treatment was significantly higher than that of NAA treatment. The shooting percentage was decreased with an increase of the PGRs concentration. In growing substrates experiment, the number of roots on commercial soil (61.2) was the highest, followed commercial + kanuma soil (45.7), and the lowest was kanuma soil (41.8). The shoot length treated with commercial soil (8.9 ㎝) was significantly greater than that of kanuma soil (4.1 ㎝). In cutting positions experiment, the number of roots treated with apical (56.6) was significantly higher than that of basal (38.8). In leaf-cut experiment, the number of roots and of shoot length treated with full leaf was significantly higher than that of half leaf. As a result, we recommend treating cuttings with 100 ㎎/L IBA treatment, commercial soil, apical position, and full leaf for successful cutting propagation of V. rotunda var. subintegra. - COLLAPSE
    August 2021
  • Research Article

    In Vitro Tissue Culture Frequency and Transformation of Various Cultivars of Soybean (Glycine max (L.) Merr.)

    다양한 콩 자원들의 기내 조직배양 효율 및 형질전환

    Mi-Suk Seo, Chuloh Cho, Namhee Jeong, Soon-Kee Sung, Man-Soo Choi, Mina Jin and Dool-Yi Kim

    서미숙, 조철오, 정남희, 성순기, 최만수, 진민아, 김둘이

    Efficient in vitro regeneration system is essential for the successful crop breeding of soybean (Glycine max (L.) Merr.) using the new biotechnology ... + READ MORE
    Efficient in vitro regeneration system is essential for the successful crop breeding of soybean (Glycine max (L.) Merr.) using the new biotechnology. The genotype of donor plants strongly influences the establishment of tissue culture system. Therefore, the screening of genotypes with excellent tissue culture ability is very important for soybean genetic improvement. In this study, we report the tissue culture efficiency of 21 soybean cultivars belong to Korean soybean core-collection and two foreign cultivars (Jack and Maverick). The Kwangan, Anpyeong and Seonam are share close genetic relationship in 21 cultivars and these three cultivars were observed the high frequency of germination and regeneration. Furthermore, the high tissue culture abilities were also observed in the Williams 82 used in reference genome sequencing and the two foreign cultivars. The transformation of pBAtc:tRNA with bar gene was performed by Agrobacterium tumefaciens in the cultivars with high tissue culture ability. Transformation of the bar gene was identified by PCR analysis in Kwangan, Pungwon, Seonam, and Maverick. Our results provide useful information for the breeding of various soybean cultivars by plant biotechnology such as, genome editing. - COLLAPSE
    August 2021
  • Research Article

    Growth and Useful Component of Angelica gigas Nakai under High Temperature Stress

    고온 스트레스에 따른 참당귀의 생육 및 유용성분 특성

    Dae Hui Jeong, Ki Yoon Kim, Sung Hyuk Park, Chung Ryul Jung, Kwon Seok Jeon and Hong Woo Park

    정대희, 김기윤, 박성혁, 정충렬, 전권석, 박홍우

    Recently, the pace of global climate change has tremendously increased, causing extreme damage to crop production. Here, we aimed to examine the ... + READ MORE
    Recently, the pace of global climate change has tremendously increased, causing extreme damage to crop production. Here, we aimed to examine the growth characteristics and useful components of Angelica gigas under extreme heat stress, providing fundamental data for its efficient cultivation. Plants were exposed to various experimental temperatures (28℃, 34℃, and 40℃), and their growth characteristics and content of useful components were analyzed. At the experimental site, the ambient and soil temperature were 19.38℃ and 21.34℃, ambient and soil humidity were 81.3 % and 0.18 ㎥/㎥, solar radiation was 162.05 W/㎡. Moreover, the soil was sandy-clay-loam (pH 6.65), with 2.66% organic matter, 868.52 ㎎/㎏ soil available phosphate, and 0.14% nitrogen. Values of most growth characteristics, including the survival rate (85%), plant height (38.66㎝), and fresh and dry weight (41.3 g and 14.24 g), were the highest at 28℃. Although the highest content of useful components was observed at 34℃ (3.24%), there were no significant differences across temperatures. Growth characteristics varied across temperatures due to detrimental effects of heat stress, such as accelerated tissue aging, reduced photosynthesis, and delay of growth. Similar content of useful components across temperatures may be due to poor accumulation of anabolic products caused by impaired growth at extremely high temperatures. - COLLAPSE
    August 2021
  • Research Article

    Growing Environment Characteristics and Vegetation Structure of Lonicera harae, Medicinal Plant

    약용식물 길마가지나무 자생지의 생육환경특성과 식생구조

    Yonghwan Son, Sunghyuk Park, Daehui Jeong, Hyejung Cho, Hojun Son and Kwonseok Jeon

    손용환, 박성혁, 정대희, 조혜정, 손호준, 전권석

    Lonicera harae is a species of shrub in the Caprifoliaceae family, mostly distributed in East asia. So far, the related research on ... + READ MORE
    Lonicera harae is a species of shrub in the Caprifoliaceae family, mostly distributed in East asia. So far, the related research on the genus of Lonicera is insufficient compared to the Lonicera japonica belonging to the same genus, which requires attention to domestic native plants. Therefore, this study aims to provide baseline data for cultivation and utilization through the growth environment and vegetation structure of the natural habitat. Lonicera harae, which plant found throughout the Korean Peninsula. The natural habitats of Lonicera harae is the forest, valley and lowland areas of the southern region. study examined 24 quadrats in 11 regions, including Gwangju, Wanju and Namhae. As a result, environmental condition of Lonicera harae was 8 to 483 m above sea level, normally distributed over 173 m, Slope was 5 to 25 degree with 8.5 degree on average. The list of plants were classified as a total of 229 taxa comprising 80 families, 166 genus, 198 species, 3 subspecies, 24 varieties, 4 forma. As a result of the clustering analysis, the three clusters were divided into three groups; Robinia pseudoacacia, Zelkova serrata, Larix kaempferi. Species diversity was 1.399 and Dominance and Evenness were found to be 0.978 and 0.022 respectively. - COLLAPSE
    August 2021
  • Research Article

    A Study on the Vascular Flora and its Management Plan at The Forest Genetic Resource Reserve of Mt. Munsu (Gimpo)

    문수산(김포) 산림유전자원보호구역 관속식물상 변화 및 관리방안

    Ho Geun Yun, Ah young Lee, Jong Bin An, Tae Young Hwang and Jong Won Lee

    윤호근, 이아영, 안종빈, 황태영, 이종원

    This study was investigated to find out the distribution of vascular flora and remarkable plants and its factors and management plan in ... + READ MORE
    This study was investigated to find out the distribution of vascular flora and remarkable plants and its factors and management plan in the forest genetic resource reserve of Mt. Munsu, located in the DMZ and DMZ border area in Gimpo, Gyeonggi-do province. The survey was carried out 17 times from April 2019 to October 2020. First of all, in the forest genetic resource reserve of the Mt. Munsu, a total of 444 taxa in 95 families, 276 genera, 395 species, 13 subspecies, 33 varieties and 3 forms. This result was found to be about 9.09% of the total 4,881 taxa of vascular plants in Korea. In addition, endemic plants were classified as 6 taxa. Floristic special and rare plants were identified as 39 taxa and 3 taxa, respectively. Lastly, the invasive alien plants that appeared in Mt. Munsu of the forest genetic resource reserve were observed in 58 taxa. Moreover, the naturalization rate was 13.1% and the urbanization index was calculated to be 18.0%. As a result of comparing the vascular flora at the forest genetic resource reserve on Mt. Munsu identified in this study with previous studies, it was found the number of taxa was decreased compared to the previous studies, despite the fact that the recent survey section was wider and more varies routes were investigated. In particular, it was confirmed that the number of rare and endemic plants decreased significantly, and the number of invasive plants greatly spread to forest roads and hiking trails. Therefore, it is considered that the forest rest year system should be introduced for the conservation and management of native plants in the forest genetic resource reserve. - COLLAPSE
    August 2021
  • Research Article

    Breeding of ‘Greenbear’ for New Cultivar of Gomchwi with Disease Resistant and High Yield

    내병 다수성 곰취 신품종 ‘그린베어’ 육성

    Jong Taek Suh, Dong Lim Yoo, Ki Deog Kim, Jong Nam Lee, Hwang Bae Sohn, Jeong Hwoan Nam, Su Jeong Kim, Su Young Hong and Yul Ho Kim

    서종택, 유동림, 김기덕, 이종남, 손황배, 남정환, 김수정, 홍수영, 김율호

    ‘Gondalbi’ (Ligularia stenocephala (Maxim.) Matsum. & Koidz.) is the most cultivated Gomchwi species because of higher yield and low in aromatic flavor ... + READ MORE
    ‘Gondalbi’ (Ligularia stenocephala (Maxim.) Matsum. & Koidz.) is the most cultivated Gomchwi species because of higher yield and low in aromatic flavor and bitter taste, But ‘Gondalbi’ is susceptible to powdery mildew disease and leaf shriveling after harvest in Summer. To improve powdery mildew disease resistance and post-harvest leaf shriveling problem in ‘Gondalbi’, ‘Handeari-gomchwi’ resistant to powdery mildew disease and having higher yield potential used as a paternal trait donor. Powdery mildew disease resistance and post-harvest leaf shriveling as well as agronomic performance of a new variety, ‘Greenbear’ were tested under field and green house conditions in Pyungchang, Korea from 2007 to 2016. Expression of both maternal and paternal characteristics in ‘Greenbear’ including purple colored petiole ears, glossy leaf and paternal, petiole trichome, absent at the back of a leaf were confirmed. Plant size and flowering time of ‘Greenbear’ were similar to check line, ‘Gommany’, while leaf number per plant and yield were higher in ‘Greenbear’. ‘Greenbear’ has thinner leaves (0.66㎜) compared to ‘Gommany (0.69 ㎜)’, and hardness appeared slightly higher in ‘Greenbear(25.1 ㎏/㎠)’. The resistance to powdery mildew disease of the ‘Greenbear’ variety was slightly lower than that of the ‘Gommany’ variety, but somewhat showed high resistance. - COLLAPSE
    August 2021
  • Research Article

    Vegetation Structure and Growth Environmet of Diabelia spathulata (Siebold & Zucc.) Landrein Population in Mt. Cheonseong, Korea

    천성산 주걱댕강나무 개체군의 식생구조와 생육환경

    Myung Hoon Yi, Sung Tae Yoo and Jeong Gul Jang

    이명훈, 유성태, 장정걸

    The range of D. spathulata identified in this survey was between N 35° 24' 58" ~ N 35° 26' 35", E 129° 05 ... + READ MORE
    The range of D. spathulata identified in this survey was between N 35° 24' 58" ~ N 35° 26' 35", E 129° 05' 43" ~ E 129° 07' 04". It is located at an altitude of 98~592 m. The soil pH was strongly acidic in the range of 4.2~4.9, with a canopy openness of 18.56% and a chlorophyll index of 36.74 ± 2.80. As a result of the TWINSPAN analysis, 20 plots of 100 ㎡ each were divided in 4 communities: Pinus densiflora community, Quercus monglica-Diabelia spathulata community, Quercus serrata-Diabelia spathulata community and Carpinus tschonoskii subassociation. The result of species diversity was 0.7615, and evenness and dominance were found to be 0.6077 and 0.3923, respectively. The height of D. spathulata is up to 3.4 m, and the average height is 1.1 m, with most of the species distributed as shrubbery and herbaceous. The average population density of the 20 plots was 1.635 individuals/㎡, the height range of flowering was 1.0 ~ 1.8 (aver. 1.39 m) and the rate of flowering was 27.37%. It’s propagation pattern was mainly formed by extending the rhizome to the side, creating a colony of ground stems. - COLLAPSE
    August 2021
  • Research Article

    Protective Effects of Aged Ginger Extracts on Excessive Exercise-induced Stress

    과도한 운동 스트레스에 대한 숙성생강 추출물의 방어효과

    Sang Yoon Choi, Kyung-Tack Kim, Guijae Yoo and Sung Soo Kim

    최상윤, 김경탁, 유귀재, 김성수

    Ginger roots are widely used as spices in various foods and herbal medicine due to its characteristic flavor and biological activity. In ... + READ MORE
    Ginger roots are widely used as spices in various foods and herbal medicine due to its characteristic flavor and biological activity. In this study, the protective effect of aged ginger extracts against oxidative stress were investigated using L6 muscle cells. As the results, aged ginger extracts significantly inhibited oxidative stress induced muscle cell damage. The protective effect of aged ginger extracts was higher than non-aged ginger extract. Aged ginger extracts also inhibited the increase in LDH, lactate and GOT in the mouse blood induced by excessive running exercise. Therefore, aged ginger is considered to be effective for protecting excessive exercise stress. - COLLAPSE
    August 2021
  • Research Article

    Tyrosinase Inhibitory Activity and Melanin Production Inhibitory Activity of Taraxinic Acid from Taraxacum coreanum

    흰민들레(Taraxacum coreanum)에서 분리한 taraxinic acid의 tyrosinase 활성저해 및 melanin 생성저해 효과

    Seung Il Park, Hye Ryeon Yoon, Jun-Ho Shin, Sung Joo Lee, Do Yoon Kim and Hwan Myung Lee

    박승일, 윤혜련, 신준호, 이성주, 김도윤, 이환명

    This study was to investigate the Taraxinic acid from Taraxacum coreanum on tyrosinase activity and melanogenesis. In B16BL6 cell, Taraxinic acid did ... + READ MORE
    This study was to investigate the Taraxinic acid from Taraxacum coreanum on tyrosinase activity and melanogenesis. In B16BL6 cell, Taraxinic acid did not show cytotoxicity even at concentrations of up to 100 ㎍/mL. In addition, tyrosinase inhibitory activity and melanogenesis inhibitory activity were confirmed by stimulation with α-melanocyte stimulating hormone (α-MSH) in the presence of taraxinic acid. Taraxinic acid was added to cells at concentrations of 10, 50 and 100 ㎍/mL and treated for 48 hours to confirm tyrosinase inhibitory activity and melanin production. The tyrosinase inhibitory activity increased in proportion to the amount of the sample, and showed an inhibitory activity of about 54.5% at a concentration of 50 ㎍/mL. Melanin production decreased in proportion to the sample amount, and it was about 62.2% at the concentration of 10 ㎍/mL. From the above results, it was found that Taraxinic acid had higher tyrosinase activity and melanin synthesis inhibitory activity in melanocyte than arbutin. The results suggest that Taraxinic acid can be utilized in natural whitening cosmetics. - COLLAPSE
    August 2021
  • Research Article

    Effect of Fruits from Pyrus ussuriensis var. hakunensis (Nakai) T.B. Lee on Macrophage Activation

    산돌배(Pyrus ussuriensis var. hakunensis (Nakai) T.B. Lee) 열매의 대식세포 활성화 유도 활성

    Na Gyeong Geum and Jin Boo Jeong

    금나경, 정진부

    In this study, we investigated in vitro immunostimulatory activity of fruit extracts from Pyrus ussuriensis var. hakunensis (Nakai) T.B. Lee (PUF ... + READ MORE
    In this study, we investigated in vitro immunostimulatory activity of fruit extracts from Pyrus ussuriensis var. hakunensis (Nakai) T.B. Lee (PUF) using mouse macrophage RAW264.7 cells. PUF increased the production of immunostimulatory factors such as NO, iNOS, IL-1β, IL-6 and TNF-α, and phagocytic activity in RAW264.7 cells. The inhibition of TLR2 and TLR4 blocked PUF-mediated production of immunostimulatory factors in RAW264.7 cells. In addition, the inhibition of MAPKs signaling pathway reduced PUF-mediated production of immunostimulatory factors. From these results, PUF may have immunostimulatory activity via TLR2/4-mediated activation of MAPKs signaling pathway. Therefore, PUF expected to be used as a potential immune-enhancing agent. - COLLAPSE
    August 2021
  • Research Article

    Study on the Correlation between the Soil Properties and Albiflorin, Paeoniflorin Contents of Paeonia lactiflora Pall.

    작약의 Albiflorin, Paeoniflorin 함량과 토양특성 간의 상관관계 연구

    Hyun Ji Eo, Youngki Park, Gwang Hun Park, Ji-Ah Kim, Da Som Kim, Yeongyeong Kang, Kiyoon Kim, Jun Hyuk Jang and Hyun-Jun Kim

    어현지, 박영기, 박광훈, 김지아, 김다솜, 강연경, 김기윤, 장준혁, 김현준

    The aim of this study was to investigate the correlation between soil properties and marker compounds contents of Paeonia lactiflora. The methods ... + READ MORE
    The aim of this study was to investigate the correlation between soil properties and marker compounds contents of Paeonia lactiflora. The methods of determining marker compounds were validated by measuring the linearity, limit of detection (LOD), limit of quantification (LOQ), precision, accuracy and recovery using UPLC analysis. P. lactiflora contained albiflorin at 0.04 ± 0.00 ~ 2.79 ± 0.21%, paeoniflorin at 1.98 ± 0.14 ~ 6.67 ± 0.84%. The root dry weight (RDW) of P. lactiflora was 0.06 ± 0.02 ~ 1.27 ± 0.28 ㎏. The soil properties analysis such as soil pH, electric conductivity (EC), organic matter (OM), total nitrogen (TN), available phosphate (Avail. P2O5), exchangeable cation and cation exchange capacity (CEC) were performed following standard analysis manual. The results of correlation analysis between soil properties and growth characteristics, available P2O5 was positively coreelated with the RDW of P. lactiflora. On the other hand, the RDW of P. lactiflora showed significantly negative correlation with contents of albiflorin and paeoniflorin. The results of this study was might be help to provide useful information on the establish of standard cultivation by the investigate correlation analysis between growth characteristics and marker compound contents of P. lactiflora. - COLLAPSE
    August 2021
  • Research Article

    Resveratrol and Aspartic acid Contents and Antiadipogenic Effect of Peanut and Peanut Sprout Extracts

    땅콩과 땅콩새싹 추출물의 resveratrol과 aspartic acid 함량분석 및 지방세포분화 억제효능

    Hyun Hee L. Lee and Sang Yoon Choi

    이현희, 최상윤

    Interest in peanuts driven by their various biological activities and abundant nutrition engenders research interest in peanut sprouts for determining their biological ... + READ MORE
    Interest in peanuts driven by their various biological activities and abundant nutrition engenders research interest in peanut sprouts for determining their biological activities and nutrition. Several research groups have recently studied the peanut sprout ingredients, but these studies focused on the peanut sprout extracted by methanol, an inedible extraction solvent. Thus, the present study provides the contents of two biologically active compounds, resveratrol and aspartic acid, in peanut and peanut sprout extracted by hot water and fermented ethanol, two edible extraction solvents, using UPLC-MS/MS technique. The UPLC-MS/MS results show that the peanut sprout extracted by fermented ethanol has the highest resveratrol and aspartic acid contents. This extract also exhibited the highest inhibitory effect on adipocyte differentiation, which the resveratrol may induce. Consequently, peanut sprout extracted by fermented ethanol might be helpful for the development of functional food plant materials. - COLLAPSE
    August 2021