• 한국약용작물학회지
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• 제23권3호
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• pp.190-197
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• 2015

In this study, we tried to offer the possibility of White Hibiscus syriacus L. (WHS) flower extracts as a preventive and improving agent of osteoporosis that bone mass reduction is induced by an decrease of osteoblast involved in bone formation and increase of bone resorption by osteoclast activity. As a results, it was found to have antioxidant activity and contain a flavonoid contents ($47.74 mg/g) of the WHS flower. There was cytotoxicity at more than $250{\mu}g/m{\ell}$ concentration of WHS flower extract of RANKL-induced osteoclast in RAW264.7. There were no significant inhibited TRAP activity in the WHS leaf and stem. However, it was confirmed that it is significantly inhibited the differentiation activity of osteoclasts in 50 and $100{\mu}g/m{\ell}$ concentration of cells of stability levels of only WHS flower extracts (p < 0.01). The WHS flower prominently inhibited RANKL-induced osteoclast differentiation activity by decreased calcitonin receptor and TRAP mRNA (p < 0.01). These results indicate that of osteoclasts differentiation activity is inhibited by protection of oxidative stress due to the antioxidant activity of the WHS flower. Therefore, suggesting the WHS flower may be a presents the possibility as a preventive and therapeutic agents for osteoporosis.

• 생명과학회지
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• 제27권9호
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• pp.1059-1063
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• 2017

혈관신생과정은 종양 형성과 이동에 필수적인 과정으로 촉진제와 저해제에 의하여 조절되며, 이러한 혈관신생과정의 저해는 새로운 항암치료 기법으로 이용하고 있다. 최근, 한약재와 식료품으로부터 추출한 천연물을 새로운 치료 물질로 널리 이용하고 있으며, 실제 in vitro 뿐만 아니라 in vivo 상에서도 항암 효과가 나타나는 것을 확인하였다. 그 중 도라지는 아시아에서 한약재와 식료품으로 오랫동안 사용 되어왔다. 본 연구에서는 도라지 추출물이 in vitro 상에서 인간 제대 정맥 내피 세포의 혈관신생을 억제하는 효과에 대해 조사하였다. 도라지 추출물은 세포독성 없이, 혈관 형성 및 이동, 침윤 현상을 모두 억제하는 효과를 보였다. 특히, 세포 이동은 80% 정도 감소 시켰으며 침윤 현상이 거의 나타나지 않는 것을 확인하였다. 이러한 결과를 토대로 도라지 추출물은 혈관신생 억제제로 이용할 수 있으며, 더 나아가 항암제로 개발될 수 있을 것이라 사료된다.

• Journal of Plant Biotechnology
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• 제7권1호
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• pp.45-50
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• 2005

To clone blue and white flower color specific genes, mRNA differential display was carried out with two different Commelina species, C. communis Linne for blue color and C. coreana Leveille for. leucantha Nakai for white color. Fifty two and 100 cDNA clones specific for blue or white flower color, respectively, were ranging from 200 to 700 bp in size. From the reverse northern blot analysis, 12 and 7 positive clones were selected for blue and white flower, respectively. These clones appear to be novel cDNAs for these Commelina plants, but not color specific. This finding was supported by the northern blot analysis. However, two clones, B18 and B19, derived from blue flowered Commelina were highly expressed than in the white Commelina species, implying that further study will be valuable. The results indicated that both mRNA display experiment and dot blot analysis may not sensitive enough to clone color-determining gene from the plant, leading to explore more advanced method, like high-density colony array study (HDCA).

• 원예과학기술지
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• 제17권3호
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• pp.333-336
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• 1999

사과 품종 '후지'와 '조나골드'의 2년생 가지상에 발생한 신초에 대하여 5월 초순부터 7월 중순까지 약 12일 간격으로 기부에 5엽을 남기고 각각 절단전정을 실시한 결과, 절단한 가지상에 2차 생장이 이루어졌으며 절단전정의 시기와 관계없이 '후지'가 '조나골드'에 비하여 더 왕성한 2차 생장을 나타내었다. 그러나 각 품종에서의 2차 생장은 절단전정의 시기에 따라 다르게 나타나 '후지'의 경우 5월 초순이나 7월에 실시하였을 때보다 5월 중순 또는 6월에 실시하였을 때 더 왕성하였으며 '조나골드'의 경우에는 5월 중순까지의 전정에서는 2차 생장이 전혀 일어나지 않았으며 5월 하순 이후의 전정에 의해 2차 생장을 나타내었다. 하계 절단전정에 의하여 형성 된 정화아로부터 이듬해에 개화와 착과도 이루어졌다. 대체적으로 '조나골드'에 비하여 '후지'가 절단전정에 의한 정화아 형성률이 높은 경향 이었으며 '후지'는 5월 하순, '조나골드'는 6월 중순에 절단전정을 실시하였을 때 가장 높은 정화아 형성률을 나타내었다. 형성된 단과지로부터의 개화는 두 품종 모두 비슷하였으나 착과율은 '조나골드'보다 '후지'에서 다소 높게 나타났으며 각 품종에서의 착과율은 하계 절단전정의 시기에 따라 달라지지 않는 경향이었다. 따라서 하계절단전정은 품종에 따라 그 생장 특성에 맞게 시기를 달리하여야 효과적임이 구명되었다.

• 동의생리병리학회지
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• 제29권4호
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• pp.322-329
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• 2015

Cirsium japonicum var. ussuriense are often used in treatment of human diseases such as hemorrhage, blood congestion and inflammation in Korea. However, there was not report on the anti-obesity efficacy of water extracts from different organs of C. japonicum var. ussuriense. Here, we investigated the antioxidant effects of water extracts of flowers, leaves and roots from C. japonicum var. ussuriense. Total polyphenol amounts of the flower extract showed higher than those of leaf and root extract. Flower extract also showed the high antioxidant activities such as DPPH radical scavenging activity and reducing power. We also investigated the anti-obesity effects of water extracts of flowers, leaves and roots from C. japonicum var. ussuriense in 3T3-L1 cells and high fat diet-induced obesity mice. The mice were divided into four groups [high fat diet (HFD) control, HFD + leaf extract, HFD + flower extract and root extract] and administered with each extract (200 mg/kg) for 12 weeks. The flower and leaf extract significantly suppressed the levels of oil red O and triglyceride content. The flower and leaf extract also significantly reduced the triglyceride, total cholesterol and lower density lipoprotein levels of plasma as well as body and abdominal fat weight. Furthermore, oral glucose tolerance in the flower and leaf extract groups were significantly ameliorated in comparison to the high fat diet group. Therefore, these results indicate that the flower and leaf extract could ameliorate obesity and attenuate blood glucose level in high fat diet-induced obesity mice. We conclude that this study may provide positive insights into water extracts of flowers and leaves from C. japonicum var. ussuriense as a functional food ingredient for treatment of obesity.

• 인간식물환경학회지
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• 제22권5호
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• pp.455-466
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• 2019

This study was carried out to analyze trends in floral products and services through the big data analysis of various social networking services (SNSs) and then to provide objective marketing directions for the floricultural industry. To analyze the big data of SNSs, we used four analytical methods: Cotton Trend (Social Matrix), Naver Big Data Lab, Instagram Big Data Analysis, and YouTube Big Data Analysis. The results of the big data analysis showed that SNS users paid positive attention to flower one-day classes that can satisfy their needs for direct experiences. Consumers of floral products and services had their favorite designs in mind and purchased floral products very actively. The demand for flower items such as bouquets, wreaths, flower baskets, large bouquets, orchids, flower boxes, wedding bouquets, and potted plants was very high, and cut flowers such as roses, tulips, and freesia were most popular as of June 1, 2019. By gender of consumers, females (68%) purchased more flower products through SNSs than males (32%). Consumers preferred mobile devices (90%) for online access compared to personal computers (PCs; 10%) and frequently searched flower-related words from February to May for the past three years from 2016 to 2018. In the aspect of design, they preferred natural style to formal style. In conclusion, future marketing activities in the floricultural industry need to be focused on social networks based on the results of big data analysis of popular SNSs. Florists need to provide consumers with the floricultural products and services that meet the trends and to blend them with their own sensitivity. It is also needed to select SNS media suitable for each gender and age group and to apply effective marketing methods to each target.

• 한국작물학회지
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• 제44권2호
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• pp.171-175
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• 1999

Morphological alteration of floral organ development in rice affected by chilling stress was examined. Three varieties of rice were grown under natural conditions and subjected to 12$^{\circ}C$ for 3 or 6 days starting from the ineffective tillering stage, before heading stage and returned to natural condition. Headings were delayed by a 6 day chilling treatment. After heading the panicles were collected and examined for any possible alteration in floral organ development. It appears that there were some differences in sensitivity to chilling stress and degree of injury depending on treatment stages and variety. Chuchungbyeo was the most frequent in producing abnormal flowers among the three varieties examined. Meiosis stage was shown to be the most vulnerable to chilling stress in both Chuchungbyeo and Ilpumbyeo and young panicle differentiation stage was the frequent stage to alter flower development in response to chilling stress only in Chuchungbyeo. It was confirmed that abnormalities occurred in pollen due to chilling stress is a major factor leading to low yield, but to some extent the alterations in carpel development may playa certain role in determining a total yield in response to chilling stress at the reproduction stage in rice. There were abnormalities like extra stigmata, extra lemma, double ovary as well as abnormal anther formation in response to chilling stress. Further studies of the phenocopy observed in rice floral development may be useful for an understanding of the resistance against chilling injury during reproductive stages in rice.

• 농업생명과학연구
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• 제45권2호
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• pp.29-34
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• 2011

절화 나리의 고랭지 여름 재배시 정식시기에 따른 절화의 품질과 수확시기를 알아보고자 수행되었다. 정식시기를 5월 15일, 6월 5일, 6월 15일, 7월 15일로 나누어 정식하고, 종구원을 수입과 국내에서 양구된 종구로 나누어 30% 차광망을 피복한 비가림하우스내에 정식하였다. 재배한 결과 5월 15일과 6월 25일이 수량 및 품질이 가장 좋았으며 정식시기가 가장 늦은 7월 15일의 경우는 정식시기 시 고온에 영향을 받아 수량 및 품질이 매우 떨어졌다. 전체적인 생육 및 수량에서 수입종구와 국산종구는 수입종구가 다소 우수하나 유의차는 없었다. 정식시기에 따른 수확기가 8월 중순경부터 10월 하순까지 계속되어 대일 수출시 분산정식에 의한 월별 생산이 가능할 것으로 기대되었다. 그러나 7월 초순 이후의 고온기에는 차광 외에 다른 방법을 추가하여야 안정적인 생산이 가능할 것으로 판단된다.

• 한국자원식물학회지
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• 제19권1호
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• pp.120-125
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• 2006

한국 자생 개맨드라미의 파종시기에 따라서 개화 및 생육에 미치는 영향을 조사하여 생리적 특성을 파악하고 재배법을 확립하기 위하여 1월부터 8월까지 1개월 간격으로 파종하였다. 2월과 3월에 파종하여 4월과 5월에 정식한 개맨드라미의 초장은 69.1cm 이하로 짧고, 개화소요일수가 31일로 단축되었으며 측지발생이 많아서 개화수도 많았으나, 화서장이 짧고 경경도 가늘었다. 5윌부터 6월에 파종한 것은 개화소요일수가 58일로 길었고, 초장도 94.1cm에서 122.0cm로 길었다. 따라서 개맨드라미는 봄의 단일조건에서 개화가 촉진되는 상대적 단일식물로 판단된다. 시기별로 화단 조성을 위하여 개맨드라미를 파종할 경우 여름부터 가을까지의 키가 작고 총총한 화단 조성을 위해서는 2-3월에 파종하여 4-5월에 화단에 정식하는 것이 적당하고, 초장이 긴 가을 화단 식물 조성이나 절화용으로 활용할 경우는 4-5월에 파종하여 6-7월에 포장에 정식하는 것이 적당하다.

• 한국환경복원기술학회지
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• 제16권2호
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• pp.105-114
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• 2013

This study was carried out to find growth increasing methods of Rhododendron mucronulatum in Mt. Biseul. 4 treatments(heavy pruning, light pruning, non-pruning+fertilization, non-pruning(control)) were used in the study area with different pruning methods. Growth characteristics of new shoot, number of creation of flower buds and leaf buds in new shoot were analysed. Significant differences were observed among the treatments and stem diameter degree. Diameter, length of new shoots and the number of flower buds, leaf buds per new shoots increased in the pruning treatments. But heavy pruning showed more effective growth increasing way than light pruning. Non-pruning and fertilization treatments were not effective to increase growth of Rhododendron mucronulatum. And pruning at the end of May was the most effective way for growth of new shoot.